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2 1. The kinetic energies of a planet in an elliptical orbit about the Sun, at positions A, B and C are K A, K B and K C, respectively. AC is the major axis and SB is perpendicular to AC at the position of the Sun S as shown in the figure. Then 1. ` øúa _ØÔÁ }ÒÁmh õøu À J PõÎß C UP BØÓÀ A, B ØÖ C {ø»pîà øó K A, K B ØÖ K C BS. ` ß hzvà Põmi ÁõÖ S- {ø» À C US õx AC Gß x ö Aaø\² SB BÚx AC-ØS º SzuõPÄ EÒÍx (1) K A > K B > K C (2) K B < K A < K C (3) K A < K B < K C (4) K B > K A > K C 2. A solid sphere is in rolling motion. In rolling motion a body possesses translational kinetic energy (K t ) as well as rotational kinetic energy (K r ) simultaneously. The ratio K t : (K t + K r ) for the sphere is (1) 5 : 7 (2) 10 : 7 (3) 7 : 10 (4) 2 : 5 3. A solid sphere is rotating freely about its symmetry axis in free space. The radius of the sphere is increased keeping its mass same. Which of the following physical quantities would remain constant for the sphere? (1) Moment of inertia (2) Rotational kinetic energy (3) Angular velocity (4) Angular momentum 4. If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude, which of the following is not correct? (1) Walking on the ground would become more difficult. (2) Time period of a simple pendulum on the Earth would decrease. (3) Raindrops will fall faster. (4) g on the Earth will not change. (1) K A > K B > K C (2) K B < K A < K C (3) K A < K B < K C (4) K B > K A > K C 2. J vhu PõÍ õúx E Ð C UPzvÀ EÒÍx, E Ð C UPzvÀ, J ö õ ÍõÚx Ch ö ºÄ C UP BØÓÀ (K t ) ØÖ _ÇØ] C UP BØÓÀ (K r ) Cµsøh² A u µzvà ö ØÔ US. GÛÀ, vhu PõÍzvØPõÚ K t : (K t + K r ) upä (1) 5 : 7 (2) 10 : 7 (3) 7 : 10 (4) 2 : 5 3. J vhu PõÍ õúx Auß \ a^º Aaø\ ØÔ PmiÀ»õ öáî À ußûaø\ õp _ÇÀQÓx. Auß {øóø õøóõ À Auß Bµ mk AvP UP kvóx. GÛÀ, vhu PõÍzøu ö õ zu mià ßÁ ÁÚÁØÔÀ G u C Ø À Põµo õúx õóõ À C US (1) v zvóß (2) _ÇØ] C UP BØÓÀ (3) Põn vø\ ÁP (4) Põn E u 4. ` Ûß {øó zx h[s SøÓÁõPÄ, Dº õô¼ zx h[s AvP õpä AÍÃmiÀ C uõà, ßÁ TØÔÀ Gx uáóõúx (1) uøµ À h x ªPÄ ]µ õp C US. (2) Â À uû F\¼ß Põ» Aø»Ä µ SøÓ². (3) øçzxîpò ÁP õp RÈÓ[S. (4) Â µ ß «x g -ß v õóõx. HLAAC/KK/Page 2 SPACE FOR ROUGH WORK English/Tamil

3 5. A toy car with charge q moves on a frictionless horizontal plane surface under the influence of a uniform electric field E. Due to the force q E, its velocity increases from 0 to 6 m/s in one second duration. At that instant the direction of the field is reversed. The car continues to move for two more seconds under the influence of this field. The average velocity and the average speed of the toy car between 0 to 3 seconds are respectively (1) 1 m/s, 3 m/s (2) 1 m/s, 3 5 m/s (3) 2 m/s, 4 m/s (4) 1 5 m/s, 3 m/s 6. A block of mass m is placed on a smooth inclined wedge ABC of inclination as shown in the figure. The wedge is given an acceleration a towards the right. The relation between a and for the block to remain stationary on the wedge is 5. ^µõú ªß» E ß uõupzvúõà q ªßÞmh öpõsh J ö õ ø PõµõÚx Eµõ ÁØÓ QøhuÍ µ ß ªx PºQÓx. q E Âø\ ÚõÀ 1 ÂÚõi Põ» AÍÂÀ Auß vø\ ÁP 0 ¼ x 6 m/s ØS E ºÁøhSÓx. A uupúzvà ªß»zvß vø\ õøó kqóx. C u»zvß uõupzvà PõµõÚx öuõhº x ¾ Cµsk ÂÚõiPÒ PºvÓx. GÛÀ 0 ¼ x 3 ÂÚõiPÎÀ Põ ß \õµ\ vø\ ÁP ØÖ \µõ\ ÂøµÄ (1) 1 m/s, 3 m/s (2) 1 m/s, 3 5 m/s (3) 2 m/s, 4 m/s (4) 1 5 m/s, 3 m/s 6. m-{øóöpõsh öuõs JßÖ -\õ ÄU Põn öpõsh ABC GßÓ ÁÇÁÇ õú \õ uízvß «x øáup mkòíx hzvà Põmh mkòíx. \õ uí õúx Á» Ó õp a AÍÄ kup öpõkup kqóx. öuõs \õ uízvß«x {ø» õp C uøpõú Cøh õú öuõhº a ØÖ ØS (1) a = g sin (2) a = g cos (3) g a = cosec (4) a = g tan 7. The moment of the force, F = 4^i + 5^j 6 ^k at (2, 0, 3), about the point (2, 2, 2), is given by (1) 4^i ^j 8 ^k (2) 7^i 8 ^j 4 ^k (3) 8^i 4 ^j 7 ^k (4) 7^i 4 ^j 8 ^k 8. A student measured the diameter of a small steel ball using a screw gauge of least count cm. The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of cm, the correct diameter of the ball is (1) cm (2) cm (3) cm (4) cm (1) a = HLAAC/KK/Page 3 SPACE FOR ROUGH WORK English/Tamil g sin (2) a = g cos (3) g a = cosec (4) a = g tan 7. ÒÎ (2, 0, 3) À, ÒÎ (2, 2, 2) I ö õ zx, Âø\ F = 4^i + 5^j 6^k ØPõÚ E uzøuz u Áx (1) 4^i ^j 8 ^k (2) 7^i 8^j 4 ^k (3) 8^i 4^j 7 ^k (4) 7^i 4^j 8 ^k 8. J õnáº «Ò]ØÓÍÄ cm öpõsh v S AÍÂø U öpõsk, J ]Ô C Ssiß Âmhzøu AÍUQÓõº. v S AÍÂ ß» AÍÄ v 5 mm ØÖ Ámh AÍÄ Âß _È õúx Ø PõÒ mhzvøs 25 ÄPÐUS À J [Qøn xòíx. v S AÍÂ cm _È øç öpõshx GÛÀ, Ssiß \ õú Âmh. (1) cm (2) cm (3) cm (4) cm

4 9. The volume (V) of a monatomic gas varies with its temperature (T), as shown in the graph. The ratio of work done by the gas, to the heat absorbed by it, when it undergoes a change from state A to state B, is 9. J JØøÓ Aq Áõ²Âß (V) õö õk Auß öá {ø»ø (T) ö õ zuuõú Áøµ Põk hzvà Põmh mkòíx. hzvà {ø» A ¼ x {ø» B ØS õö õx Áõ²ÂÚõÀ ö\ mh Áø»US, AuÚõÀ EmPÁµ mh öá zvøs õú upä (1) (2) (3) (4) The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of the closed organ pipe is 20 cm, the length of the open organ pipe is (1) 8 cm (2) 12 5 cm (3) 13 2 cm (4) 16 cm 11. At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the Earth s atmosphere? (Given : Mass of oxygen molecule (m) = kg Boltzmann s constant k B = J K 1 ) (1) K (2) K (3) K (4) K 12. The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is (1) 20% (2) 6 25% (3) 26 8% (4) 12 5% (1) (2) (3) (4) J vó u BºPß SÇõ ß Ai øh AvºöÁs BÚx J i BºPß SÇõ ß ßÓõÁx ^ ø\usa \ õs. i BºPß SÇõ ß }Í 20 cm, GÛÀ, vó u BºPß SÇõ ß }Í (1) 8 cm (2) 12 5 cm (3) 13 2 cm (4) 16 cm 11. G u öá {ø» À BU]áß»UTÓõÚx Â ¼ x Âk mka ö\à»z uøá õú rms ÁPzøu ö Ö (BU]áß»UTÔß {øó (m) = kg õàmì ß õô¼ k B = J K 1 öpõkup mkòíx) (1) K (2) K (3) K (4) K 12. } ß EøÓ{ø» ÒÎUS öpõv{ø» ÒÎUS Cøh ö\ À k J C»m] öá C vµzvß vóß (1) 20% (2) 6 25% (3) 26 8% (4) 12 5% HLAAC/KK/Page 4 SPACE FOR ROUGH WORK English/Tamil

5 13. A carbon resistor of (47 4 7) k is to be marked with rings of different colours for its identification. The colour code sequence will be (1) Yellow Violet Orange Silver (2) Yellow Green Violet Gold (3) Violet Yellow Orange Silver (4) Green Orange Violet Gold 14. A set of n equal resistors, of value R each, are connected in series to a battery of emf E and internal resistance R. The current drawn is I. Now, the n resistors are connected in parallel to the same battery. Then the current drawn from battery becomes 10 I. The value of n is (1) 11 (2) 20 (3) 10 (4) A battery consists of a variable number n of identical cells (having internal resistance r each) which are connected in series. The terminals of the battery are short-circuited and the current I is measured. Which of the graphs shows the correct relationship between I and n? 13. J Põº ß ªßuøh (47 4 7) k BÚx Auß v ø PshÔÁuØPõP Ásn ÁøÍ U SÔ±mk Aøh õí Ch mkòíx. ÁsnU SÔ±mk Á ø\uqµ Cuß (1) g\ò & Fuõ & Bµg_ & öáòî (2) g\ò & aø\ & Fuõ & ö õßûó (3) Fuõ & g\ò & Bµg_ & öáòî (4) aø\ & Bµg_ & Fuõ & ö õßûó 14. \ ªßuøh R öpõsh n -GsoUøP»õÚ ªßuøhPÒ öuõhº Cøn À R APªßuøh öpõshx E AÍÄ emf öpõshx õú ªß P»zxhß CønUP kvóx. CvÀ õ² ªß Úõmh I BS. C ö õêx n -GsoUøP»õÚ ªßuøhPÒ A u ªßP»zxhß UP Cøn À CønUP mhõà õ² ªß Úõmh 10 I BQÓx GÛÀ n -ß v (1) 11 (2) 20 (3) 10 (4) J ªßP»z öuõs õúx õö k GsoUøP n -öpõsh ªßP»[PøÍU öpõskòíx. (JÆöÁõßÔß APªßuøh² r öpõshx). AøÁ öuõhº Cøn À CønUP mkòíú. ªßP»z öuõs ß øúpò JßÔønUP mk ªß Úõmh õúx I AÍUP kvóx. ßÁ Áøµ PõmiÀ G u JßÖ I ØÖ n-øs Cøh õú \ õú öuõhºø Põs UQÓx HLAAC/KK/Page 5 SPACE FOR ROUGH WORK English/Tamil

6 16. An em wave is propagating in a medium with a velocity V = V^i. The instantaneous oscillating electric field of this em wave is along +y axis. Then the direction of oscillating magnetic field of the em wave will be along (1) + z direction (2) y direction (3) z direction (4) x direction 17. The refractive index of the material of a prism is 2 and the angle of the prism is 30. One of the two refracting surfaces of the prism is made a mirror inwards, by silver coating. A beam of monochromatic light entering the prism from the other face will retrace its path (after reflection from the silvered surface) if its angle of incidence on the prism is (1) 45 (2) 30 (3) 60 (4) zero 18. An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced through a distance of 20 cm towards the mirror, the displacement of the image will be (1) 36 cm away from the mirror (2) 30 cm towards the mirror (3) 30 cm away from the mirror (4) 36 cm towards the mirror 19. The magnetic potential energy stored in a certain inductor is 25 mj, when the current in the inductor is 60 ma. This inductor is of inductance (1) H (2) H (3) H (4) H 16. J ªßPõ u Aø» J FhPzvß ÁÈ V = V^i vø\ ÁPzvÀ µäqóx. A uu PÚzvÀ ªßPõ u Aø» ß ªß» + y Aa]À Aø»ÄÖQÓx. GÛÀ, Aø»ÄÖ Põ u»zvß vø\ (1) + z vø\ À (2) y vø\ À (3) z vø\ À (4) x vø\ À 17. J mhp ö õ Îß JÎÂ»PÀ Gs 2 ØÖ mhpzvß Põn 30. öáòî a_ öpõsk mhpzvß J JÎÂ»PÀ µ Em Ó õp Bi õp õøó kqóx. JÎ ß ußø öpõsh JÎUPØøÓ JßÖ mhpzvß ØöÓõ UPzvß ÁÈ Fk Â Aøu ÁÈ v QÓx. (JÎ a]à µv ¼zu ß) Auß mhpzvß «uõú k Põn (1) 45 (2) 30 (3) 60 (4) _È cm SÂ zyµ öpõsh J SÈBi ¼ x 40 cm öuõø»âà ö õ Ò øáup mkòíx. Biø õuq vø\ À ö õ ÍõÚx 20 cm öuõø»âøs Pºzu mhõà, zvß Ch ö ºÄ (1) Bi ¼ x 36 cm Â»Qaö\À¾ (2) Bi õuq 30 cm õuq C US (3) Bi ¼ x 30 cm Â»Qaö\À¾ (4) Bi õuq 36 cm õuq C US 19. J ªßysi À \P UP mkòí Põ u {ø» õøóà 25 mj, ªßysi À ªß Úõmh 60 ma GÛÀ, ªßysh¼ß v (1) H (2) H (3) H (4) H HLAAC/KK/Page 6 SPACE FOR ROUGH WORK English/Tamil

7 20. An electron of mass m with an initial velocity V = V 0^i (V0 > 0) enters an electric field E = E 0^i (E0 = constant > 0) at t = 0. If 0 is its de-broglie wavelength initially, then its de-broglie wavelength at time t is ee (1) t mv0 (2) 0 t (3) (4) 0 0 ee 1 mv 0 0 t 21. For a radioactive material, half-life is 10 minutes. If initially there are 600 number of nuclei, the time taken (in minutes) for the disintegration of 450 nuclei is (1) 10 (2) 30 (3) 20 (4) The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is (1) 1 : 1 (2) 2 : 1 (3) 1 : 1 (4) 1 : When the light of frequency 2v 0 (where v 0 is threshold frequency), is incident on a metal plate, the maximum velocity of electrons emitted is v 1. When the frequency of the incident radiation is increased to 5v 0, the maximum velocity of electrons emitted from the same plate is v 2. The ratio of v 1 to v 2 is (1) 1 : 4 (2) 4 : 1 (3) 1 : 2 (4) 2 : m-{øóöpõsh J Gö»Umµõß, V = V0^i (V0 > 0) GßÓ xáup vø\ ÁPzvÀ, t = 0 {ø» À, E = E 0^i (E0 = õô¼ > 0) ªß»zvÝÒ ~øçqóx. xáupzvà 0 Gß x j µõu¼ Aø»}Í GÛÀ, t µzvà j õµu¼ Aø»}Í ee (1) t mv0 (2) 0 t (3) (4) 0 0 ee 1 mv 0 0 t 21. J Pv UP ö õ ÐUS, Aøµ B²Ò Põ» 10 {ªh[PÒ. xáupzvà C u AqUP UPÎß GsoUøP 600, GÛÀ, 450 AqUP UPÒ ]øuäó BS Põ» ({ªhzvÀ) (1) 10 (2) 30 (3) 20 (4) øíiµ\ß AqÂß J õº _ØÔ¾ÒÍ J Gö»UmµõÛß C UP BØÓ¾US ö õzu BØÓ¾US õú upä (1) 1 : 1 (2) 2 : 1 (3) 1 : 1 (4) 1 : v 0 AvºöÁs öpõsh (v 0 Gß x ß öuõhup AvºöÁs) JÎ J E»õP upmiß «x k õx, EªÇ k Gö»UmµõßPÎß ö vø\ ÁP v 1 kpv ß AvºöÁs 5v 0 AÍÄ AvP UP mhõà, A u upmiß «v x EªÇ k Gö»UmµõßPÎß ö vø\ ÁP v 2, GÛÀ v 1 ¼ x v 2 ØPõÚ ÂQu (1) 1 : 4 (2) 4 : 1 (3) 1 : 2 (4) 2 : 1 HLAAC/KK/Page 7 SPACE FOR ROUGH WORK English/Tamil

8 24. Unpolarised light is incident from air on a plane surface of a material of refractive index. At a particular angle of incidence i, it is found that the reflected and refracted rays are perpendicular to each other. Which of the following options is correct for this situation? (1) Reflected light is polarised with its electric vector perpendicular to the plane of incidence (2) i = sin 1 1 (3) Reflected light is polarised with its electric vector parallel to the plane of incidence (4) i = tan An astronomical refracting telescope will have large angular magnification and high angular resolution, when it has an objective lens of (1) large focal length and small diameter (2) large focal length and large diameter (3) small focal length and large diameter (4) small focal length and small diameter 26. In Young s double slit experiment the separation d between the slits is 2 mm, the wavelength of the light used is 5896 Å and distance D between the screen and slits is 100 cm. It is found that the angular width of the fringes is To increase the fringe angular width to 0 21 (with same and D) the separation between the slits needs to be changed to (1) 1 9 mm (2) 2 1 mm (3) 1 8 mm (4) 1 7 mm 24. JÎÂ»PÀ GsöPõsh \ uí µ ß «x, PõØÔ¼ x J uíâøíäóõ JÎ kqóx. J SÔ mh k Põn i -À µv ¼ Pv Â»SPv JßÖUöPõßÖ ö\[szuõp C x PshÔ kqóx. C uu `Ì{ø»US, ß ÁÚÁØÔÀ G uu TØÖ \ õúx (1) µv ¼ JÎ Auß ªßÛ À öáuhõ húõú kuízvøs ö\[szx vø\ À uíâøíäö (2) i = sin 1 1 (3) µv ¼ JÎ Auß ªßÛ À öáuh húõú kuízvøs Cønvø\ À uíâøíäö (4) i = tan J ÁõÛ À JÎÂ»PÀ öuõø» õuq õúx, AvP Põn E ö UP, E º Põn TºEnºÄ öpõsi UP, Auß ö õ Í S ÂÀø» õúx (1) AvP SÂ zyµ ØÖ ]Ô Âmh öpõsi UP Ásk (2) AvP SÂ zyµ ØÖ AvP Âmh öpõsi UP Ásk (3) SøÓ u SÂ zyµ ØÖ AvP Âmh öpõsi UP Ásk (4) SøÓ u SÂ zyµ ØÖ SøÓ u Âmh öpõsi UP Ásk 26. J [ Cµmøh ÍÄ \õuøú À ÍÄPÐUS Cøh mh d BÚx 2 mm. ß kzu k JÎ ß Aø»}Í = 5896 Å ØÖ vøµus ÍÄUS Cøh mh öuõø»ä D ß v 100 cm. ÁøÍ [PÎß Põn AP» 0 20 A u ØÖ D v ØS Põn AP»zøu 0 21 AÍÄ AvP UP, ÍÄPÐUS Cøh mh öuõø»âà uøá õú õøó (1) 1 9 mm (2) 2 1 mm (3) 1 8 mm (4) 1 7 mm HLAAC/KK/Page 8 SPACE FOR ROUGH WORK English/Tamil

9 27. In the circuit shown in the figure, the input voltage V i is 20 V, V BE = 0 and V CE = 0. The values of I B, I C and are given by 27. R ÇöPõkUP mkòí _ØÔÀ, EÒÏk ªßÚÊzu (V i ) 20 V, V BE = 0 ØÖ V CE = 0. GÛÀ, I B, I C ØÖ ß v (1) I B = 25 A, I C = 5 ma, = 200 (2) I B = 20 A, I C = 5 ma, = 250 (3) I B = 40 A, I C = 10 ma, = 250 (4) I B = 40 A, I C = 5 ma, = In a p-n junction diode, change in temperature due to heating (1) affects only forward resistance (2) does not affect resistance of p-n junction (3) affects only reverse resistance (4) affects the overall V I characteristics of p-n junction 29. In the combination of the following gates the output Y can be written in terms of inputs A and B as (1) I B = 25 A, I C = 5 ma, = 200 (2) I B = 20 A, I C = 5 ma, = 250 (3) I B = 40 A, I C = 10 ma, = 250 (4) I B = 40 A, I C = 5 ma, = J p-n \ vøh õià, öá kzu káuõà HØ k öá {ø» õøó (1) ß ÚõUQ ªøhuøhø mk õvus (2) p-n \ v ß ªßuøhø õvupõx (3) v ªßuøhø mk õvus (4) p-n \ v ß ÊÁx õú V I s ø» õvus 29. R Ç öpõkup mkòí uºupáõ À _ØÖ Aø À, EÒÏkPÒ A ØÖ B ØPõÚ \ õú öáî±k Y (1) A. B + A. B (2) A. B + A. B (3) A. B (4) A B (1) A. B + A. B (2) A. B + A. B (3) A. B (4) A B HLAAC/KK/Page 9 SPACE FOR ROUGH WORK English/Tamil

10 30. A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27 C two successive resonances are produced at 20 cm and 73 cm of column length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 27 C is (1) 339 m/s (2) 350 m/s (3) 330 m/s (4) 300 m/s 31. The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is (1) linearly proportional to the distance between the plates. (2) proportional to the square root of the distance between the plates. (3) independent of the distance between the plates. (4) inversely proportional to the distance between the plates. 32. An electron falls from rest through a vertical distance h in a uniform and vertically upward directed electric field E. The direction of electric field is now reversed, keeping its magnitude the same. A proton is allowed to fall from rest in it through the same vertical distance h. The time of fall of the electron, in comparison to the time of fall of the proton is (1) 5 times greater (2) 10 times greater (3) smaller (4) equal 33. A pendulum is hung from the roof of a sufficiently high building and is moving freely to and fro like a simple harmonic oscillator. The acceleration of the bob of the pendulum is 20 m/s 2 at a distance of 5 m from the mean position. The time period of oscillation is (1) s (2) 2 s (3) 2 s (4) 1 s 30. J PsnõiU SÇõ À Jzvø\øÁ HØ kzu J Cø\UPøÁ ß kzu kqóx. J C [S usøhuöpõsk SÇõ ÝÒ EÒÍ PõØÖz u zvß }Ízøu \ ö\»õ. 27 C AøÓöÁ {ø» À, Akzukzx Cµsk Jzvø\ÄPÒ 20 cm ØÖ 73 cm }ÍzvÀ E ÁõUP kqóx. Cø\UPøÁ ß AvºöÁs 320 Hz GÛÀ, 27 C US J¼ ß vø\ ÁP õúx? (1) 339 m/s (2) 350 m/s (3) 330 m/s (4) 300 m/s 31. Q ªßÞmh ØÖ A µ öpõsh Cøn upk ªß uuq ß C UP mkòí Cµsk upkpðus Cøh Põn k {ø» ªßÛ À Âø\ õúx (1) upkpðus Cøh mh öuõø»âøs À ÂQu ö õ zu øh x. (2) upkpðus Cøh mh öuõø»âøs C i» ÂPu ö õ zu øh x. (3) upkpðus Cøh mh öuõø»øá \õµõux. (4) upkpðus Cøh mh öuõø»âøs GvºÂQu ö õ zu øh x. 32. ^µõú ØÖ ö\[szuõp À õuq vø\»õú J ªß» E À, J Gö»Umµõß BÚx K Ä{ø» ¼ x ö\[szuõp h öuõø»ä R Ç ÂÊQÓx. C ö õêx ªß»zvß AÍÄ A i øáup mk vø\ mk v kqóx. J µõmhõß BÚx ªß»zvÝÒ A u E µ h AÍÂØS R Ç ÂÊ õö ö\ kqóx. GÛÀ Gö»Umµõß ÂÊ µ AÍÄ µõmhõß ÂÊ µ AÍÄhß J mhõà (1) 5 h[s ö x (2) 10 h[s ö x (3) ]Ô x (4) \ õúx 33. uøá õú E µ ÒÍ Pmihzvß Tøµ ß Ea] ¼ x J F\»õÚx öuõ[pâh mkòíx ØÖ Ax J ^ ø\ Aø» ØÔ õà ßÝ ßÝ C À õp Aø»ÄÖ õö EÒÍx. \µõ\ {ø» ¼ x 5 m öuõø»âà F\À vß kup 20 m/s 2 GÛÀ, Aø»Ä µ (1) s (2) 2 s (3) 2 s (4) 1 s HLAAC/KK/Page 10 SPACE FOR ROUGH WORK English/Tamil

11 34. A metallic rod of mass per unit length 0 5 kg m 1 is lying horizontally on a smooth inclined plane which makes an angle of 30 with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction 0 25 T is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is (1) 5 98 A (2) A (3) 7 14 A (4) A 35. Current sensitivity of a moving coil galvanometer is 5 div/ma and its voltage sensitivity (angular deflection per unit voltage applied) is 20 div/v. The resistance of the galvanometer is (1) 25 (2) 250 (3) 40 (4) A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on, then the diamagnetic rod is pushed up, out of the horizontal magnetic field. Hence the rod gains gravitational potential energy. The work required to do this comes from (1) the magnetic field (2) the lattice structure of the material of the rod (3) the current source (4) the induced electric field due to the changing magnetic field 37. An inductor 20 mh, a capacitor 100 F and a resistor 50 are connected in series across a source of emf, V = 10 sin 314 t. The power loss in the circuit is (1) 0 43 W (2) 2 74 W (3) 0 79 W (4) 1 13 W 34. Jº A»S }ÍzvØS 0 5 kg m 1 {øóöpõsh J E»õPU PÈ JßÖ, Qøh mhzxhß 30 \õ ÄU PõnzøuUöPõsh ÁÇÁÇ õú \õ uízvß «x Qhzu mkòíx. PÈ õúx R ÇÁÊUPõ À C UP, ö\[szx vø\ À 0 25 T Põ u»zyshà ö\ À kzu mk, Auß ÁÈ ªß Úõmh õ² i ö\ kqóx. GÛÀ, PÈø Pµõ À {ø» õp øázv UP Auß ÁÈ õ² ªß Úõmh (1) 5 98 A (2) A (3) 7 14 A (4) A 35. J C [S _ Ò PõÀÁ Úõ «mh ß ªß Úõmh EnºÄ ~m 5 div/ma ØÖ ªßÚÊzu EnºÄ ~m 20 div/v GÛÀ PõÀÁ Úõ «mh ß ªßuøh (1) 25 (2) 250 (3) 40 (4) J ªßPõ u x Á øúpðuqøh ö\[szuõp ö À¼ Gvº Põ uupè øáup mkòíx. ªßPõ u ªß Úõmh õúx AÝ vup mhx, Cøh mh Põ u»zvà Gvº Põ uupè À õuq uòí kqóx. GÚ Á PÈ õúx Dº ªß{ø» BØÓø» ö ÖQÓx. CuØS uøá õú Áø»ø ö\ u Áx (1) Põ u» (2) PÈö\ mkòí ö õ Îß AoU PõøÁ Pmhø (3) ªß» (4) Põ u» õøózvúõà ysh k ªß» 37. J ªßysi 20 mh, J ªß uuq 100 F ØÖ J ªßuøh 50 BQ Ú öuõhº Cøn À, emf, V = 10 sin 314 t US Cøh CønUP mkòíx C u _ØÔÀ HØ k BØÓÀ CÇ (1) 0 43 W (2) 2 74 W (3) 0 79 W (4) 1 13 W HLAAC/KK/Page 11 SPACE FOR ROUGH WORK English/Tamil

12 38. The power radiated by a black body is P and it radiates maximum energy at wavelength, 0. If the temperature of the black body is now changed so that it radiates maximum energy at 3 wavelength 0, the power radiated by it 4 becomes np. The value of n is (1) (2) (3) (4) Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by l on applying a force F, how much force is needed to stretch the second wire by the same amount? (1) 6 F (2) 4 F (3) 9 F (4) F 40. A small sphere of radius r falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity, is proportional to (1) r 2 (2) r 5 (3) r 3 (4) r A sample of 0 1 g of water at 100 C and normal pressure ( Nm 2 ) requires 54 cal of heat energy to convert to steam at 100 C. If the volume of the steam produced is cc, the change in internal energy of the sample, is (1) J (2) 42 2 J (3) J (4) 84 5 J 38. J P ö õ Îß BØÓÀ PvºÃa_ P ØÖ Ax ö BØÓø» 0 Aø»}ÍzvÀ Ã_QÓx. P ö õ Îß öá {ø»ø, Ax ö BØÓø» Aø»}ÍzvÀ öáî h HØÓÁõÖ õøôúõà, BØÓÀ PvºÃa_ np GßÓõQÓx. GÛÀ, n-ß v HLAAC/KK/Page 12 SPACE FOR ROUGH WORK English/Tamil (1) (2) (3) (4) J µ ö õ ÎÚõÀ ö\ mh Cµsk P PÒ J µ AÍÄ ß öpõshuõpä EÒÍÚ. uà P ß SÖUSöÁmk µ A ØÖ CµshõÁx P ß SÖUSöÁmk µ 3A BS. uà P ß }Ízøu l AÍÄ AvP UP Auß «x Âø\ F ö\ À kzu kqóx GÛÀ CµshõÁx P ø ² A u AÍÄ }miup uøá õú Âø\ ß AÍÄ (1) 6 F (2) 4 F (3) 9 F (4) F 40. r -Bµ öpõsh J ]Ô PõÍ õúx K Ä {ø» ¼ x J õ vµázvýò ÂÊ õö ö\ kqóx. Cuß ÂøÍÁõÀ õ Âø\ ÚõÀ öá E ÁõQÓx. PõÍ õúx øú P vø\ ÁPzøu Aøh² õx öá E ÁõUP Ãu ÃQu ö õ zu (1) r 2 (2) r 5 (3) r 3 (4) r C À, C À õú AÊzuvÀ ( Nm 2 ) EÒÍ 0 1 g õv }øµ BÂ õp õøó 54 P»õ US 100 C öá BØÓÀ uøá kqóx. CvÀ EØ zv õú BÂ ß ß cc GÛÀ õv ß AP BØÓÀ õö õk (1) J (2) 42 2 J (3) J (4) 84 5 J

13 42. A body initially at rest and sliding along a frictionless track from a height h (as shown in the figure) just completes a vertical circle of diameter AB = D. The height h is equal to 42. xáupzvà J Ä{ø» ¾ÒÍ J ö õ ÍõÚx h-e µzv¼ x Eµõ ÁØÓ õøu À ( hzvà Põmi ÁõÖ) RÈÓ[Q J ö\[szuõú Ámh _ØøÓ iuqóx. Ámha _ØÔß Âmh AB = D GÛÀ, E µ h ØS \ õúx (1) D (2) (3) (4) 7 D 5 3 D 2 5 D Three objects, A : (a solid sphere), B : (a thin circular disk) and C : (a circular ring), each have the same mass M and radius R. They all spin with the same angular speed about their own symmetry axes. The amounts of work (W) required to bring them to rest, would satisfy the relation (1) W A > W B > W C (2) W B > W A > W C (3) W C > W B > W A (4) W A > W C > W B 44. A moving block having mass m, collides with another stationary block having mass 4m. The lighter block comes to rest after collision. When the initial velocity of the lighter block is v, then the value of coefficient of restitution (e) will be (1) 0 25 (2) 0 8 (3) 0 5 (4) Which one of the following statements is incorrect? (1) Limiting value of static friction is directly proportional to normal reaction. (2) Frictional force opposes the relative motion. (3) Rolling friction is smaller than sliding friction. (4) Coefficient of sliding friction has dimensions of length. (1) D (2) 7 D 5 (3) 3 D 2 (4) 5 D ßÖ ö õ ÒPÒ A : (J vh PõÍ ), B : (J ö À¼ Ámh Ámk) ØÖ C : (J Ámh ÁøÍ ) JÆöÁõßÖ J µ AÍÄ {øó M ØÖ Bµ R öpõshøá õs \ a^º Aaø\ ØÔ J µ AÍÄ Põnvø\ ÁP -À _ÇÀQßÓÚ. AÁØøÓ K Äø»US öpõsk Á ÁuØS uøá õú Áø» AÍÄ (W) v ø ºzvö\ ÁuØPõÚ öuõhº (1) W A > W B > W C (2) W B > W A > W C (3) W C > W B > W A (4) W A > W C > W B 44. m-{øóöpõsh P öuõs JßÖ 4m {øóöpõsh {ø» õp EÒÍ öuõs ß «x õxqóx. õu¾us ß {øósøóáõú öuõs J Ä{ø»US Á QÓx. {øósøóáõú öuõs ß xáup vø\ ÁP v GÛÀ, {ø»«m]u SnP (e) ß v (1) 0 25 (2) 0 8 (3) 0 5 (4) ßÁ TØÔÀ Gx uáóõúx (1) {ø» Eµõ Âß Áµ v ºSzx GvºÂøÚUS ºÂQu ö õ zu øh x. (2) Eµõ Ä Âø\ õúx \õº C UPzøu GvºUPUTi x. (3) E Ð Eµõ Ä ÁÊUS Eµõ øáupõmi¾ ]Ô x. (4) ÁÊUS Eµõ ÄU SnP }Í A»SPøÍU öpõshx. HLAAC/KK/Page 13 SPACE FOR ROUGH WORK English/Tamil

14 46. Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code : Column I Column II a. Co 3+ i. 8 B.M. b. Cr 3+ ii. 35 B.M. c. Fe 3+ iii. 3 B.M. d. Ni 2+ iv. 24 B.M. a b c d v. 15 B.M. (1) i ii iii iv (2) iv i ii iii (3) iv v ii i (4) iii v i ii 47. Iron carbonyl, Fe(CO) 5 is (1) mononuclear (2) trinuclear (3) tetranuclear (4) dinuclear 48. The type of isomerism shown by the complex [CoCl 2 (en) 2 ] is (1) Coordination isomerism (2) Ionization isomerism (3) Geometrical isomerism (4) Linkage isomerism 49. Which one of the following ions exhibits d-d transition and paramagnetism as well? (1) (2) (3) (4) Cr 2 2 O 7 MnO 4 2 CrO 4 2 MnO The geometry and magnetic behaviour of the complex [Ni(CO) 4 ] are (1) tetrahedral geometry and diamagnetic (2) square planar geometry and paramagnetic (3) square planar geometry and diamagnetic (4) tetrahedral geometry and paramagnetic 46. öuõsv I À öpõkup mh E»õP A ÛPøÍ öuõsv II À öpõkup mh AÆA ÛPÎß _ÇØ] Põ uv zvóýhß ö õ zv ØÖ Auß \ õú SÔ±møh uº öukupä : öuõsv I öuõsv II a. Co 3+ i. 8 B.M. b. Cr 3+ ii. 35 B.M. c. Fe 3+ iii. 3 B.M. d. Ni 2+ iv. 24 B.M. a b c d v. 15 B.M. (1) i ii iii iv (2) iv i ii iii (3) iv v ii i (4) iii v i ii 47. C Põº øúà, Fe(CO) 5 BÚx (1) JßøÓU P (2) U P (3) õßs P (4) C P 48. [CoCl 2 (en) 2 ] AønÄ Põmk õøô zvß ÁøP õúx (1) AønÄ õøô (2) A Û õøô (3) ÁiÁ Á\ õøô (4) Cøn õøô 49. RÌPsh A ÛPÎÀ Gx JßÖ d-d õøózøu² ØÖ õµõpõ uzußø ² Eøh uõs? (1) (2) (3) (4) Cr 2 2 O 7 MnO 4 2 CrO 4 2 MnO [Ni(CO) 4 ] AønÂß ÓöÁÎ Aø ØÖ Põ u ußø õúx (1) õß Q ÓöÁÎ Aø ØÖ h õ Põ uzußø (2) \xµuí ÓöÁÎ Aø ØÖ µõ Põ uzußø (3) \xµuí ÓöÁÎ Aø ØÖ h õ Põ uzußø (4) õß Q ÓöÁÎ Aø ØÖ µõ Põ uzußø HLAAC/KK/Page 14 SPACE FOR ROUGH WORK English/Tamil

15 51. A mixture of 2 3 g formic acid and 4 5 g oxalic acid is treated with conc. H 2 SO 4. The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be (1) 3 0 (2) 2 8 (3) 1 4 (4) The difference between amylose and amylopectin is (1) Amylose have 1 4 -linkage and 1 6 -linkage (2) Amylopectin have 1 4 -linkage and 1 6 -linkage (3) Amylopectin have 1 4 -linkage and 1 6 -linkage (4) Amylose is made up of glucose and galactose 53. Regarding cross-linked or network polymers, which of the following statements is incorrect? (1) They are formed from bi- and tri-functional monomers. (2) Examples are bakelite and melamine. (3) They contain covalent bonds between various linear polymer chains. (4) They contain strong covalent bonds in their polymer chains. 54. Nitration of aniline in strong acidic medium also gives m-nitroaniline because (1) In electrophilic substitution reactions amino group is meta directive. (2) In absence of substituents nitro group always goes to m-position. (3) In spite of substituents nitro group always goes to only m-position. (4) In acidic (strong) medium aniline is present as anilinium ion. 55. Which of the following oxides is most acidic in nature? (1) BeO (2) BaO (3) MgO (4) CaO g õºªu Aª» ØÖ 4 5 g BU\õ¼P Aª» P»øÁ Ahº H 2 SO 4 Ehß ÂøÚ QÓx. öáîá Áõ²UPÎß P»øÁ KOH ÂÀø»PÎß EÒ ö\¾zu kqóx. STP À «u ÒÍ ÂøÚö õ Îß Gøh (g) õúx (1) 3 0 (2) 2 8 (3) 1 4 (4) Aª»õì ØÖ Aª»õö Uiß Cøh EÒÍ ÁÖ õhõúx (1) 1 4 -Cøn ØÖ 1 6 -Cøn ø Aª»õì öpõsi US (2) 1 4 -Cøn ØÖ 1 6 -Cøn ø Aª»õö Uiß öpõsi US (3) 1 4 -Cøn ØÖ 1 6 -Cøn ø Aª»õö Uiß öpõsi US (4) SÐ Põì ØÖ Põ»U hõîúõà Aª»õì BUP mi US 53. SÖUSz öuõhº AÀ»x Áø» ßÚÀ» ipøí ö õ zx, RÌPsh TØÖPÎÀ Gx JßÖ \ õúx CÀø»? (1) AøÁ Cµmøh ØÖ ø & ÂøÚzöuõSv J i ÚõÀ E ÁõS. (2) Uø»m, ö»ø ß CÁØÔØS GkzxUPõmkPÍõS. (3) öáæ ÁÖ º Põmk» i \[P¼PÐUQøh \P øn PøÍ öpõshx. (4)» i \[P¼ÎÀ AøÁ Á¼ø õú \P øn PøÍ Eøh x. 54. Á¼ø ªS Aª» FhPzvÀ AÜ¼ß ø m µøó m-ø m µõ AÜ¼øÚ² u QÓx, Hß GÛÀ (1) G»Umµõß PÁº v½mk ÂøÚPÎÀ Aª Úõ öuõsv m-áè hus. (2) v½kpò CÀ»õu õx ø m µõ öuõsv G õx m&chzøu õuq ö\à¾. (3) v½kpò C u õx ø m µõ öuõsv G õx m-chzøu õuq ö\à¾. (4) Aª» (Á¼ø ªS) FhPzvÀ AÜ¼ß, AÜ¼Û A Û õp C US. 55. RÌPsh BUø\kPÎÀ Gx C ØøP õp AvP Aª»zußø ²øh x? (1) BeO (2) BaO (3) MgO (4) CaO HLAAC/KK/Page 15 SPACE FOR ROUGH WORK English/Tamil

16 56. In the reaction 56. Gö»Umµõß PÁº Põµo õp Dk káx the electrophile involved is CÆÂøn À (1) formyl cation ( CHO ) (2) dichloromethyl anion ( (3) dichloromethyl cation ( CHCl 2 ) (4) dichlorocarbene (:CCl2) ) 57. (1) õºø À º A Û ( CHO ) (2) øhs Íõ µõ ö zvà Gvº A Û ( (3) øhs Íõ µõ ö zvà ºA Û ( CHCl 2 ) (4) øhs Íõ µõ Põº ß (:CCl2) ) Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their J h huti»utö {øó²øh BÀiøíkPÒ, Rm hõßpò ØÖ BÀPíõÀPøÍ Põmi¾ Põº õuéõ¼u Aª»[PÒ AvP öpõv{ø» ÒÎPøÍ Eøh x Hß GÛÀ CÁØÔÀ (1) formation of carboxylate ion (1) Põº õuê»m A Û E ÁõÁuõÀ (2) more extensive association of carboxylic acid via van der Waals force of attraction (2) (3) formation of intramolecular H-bonding Áõshº ÁõÀì PÁºa] Âø\» õp Põº õuéõ¼u Aª»zvß AvP AP CnUPzuõÀ (4) formation of intermolecular H-bonding (3)»UTÔøh H øn E ÁõuÀ (4)»UTÔÝÒ H øn E ÁõuÀ Compound A, C8H10O, is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with characteristic smell. A and Y are respectively HLAAC/KK/Page \º A, C8H10O, NaOI ²hß ÂøÚ ÁuõP AÔQ Óõ (Y- õúx, NaOH Ehß ÂøÚ x EØ zv õqóx) ØÖ J g\ò ÃÌ iøá SÔ hzuup ö i²hß u QÓx. A ØÖ Y õúx øó SPACE FOR ROUGH WORK English/Tamil

17 59. The compound A on treatment with Na gives B, and with PCl 5 gives C. B and C react together to give diethyl ether. A, B and C are in the order (1) C 2 H 5 OH, C 2 H 5 Cl, C 2 H 5 ONa (2) C 2 H 5 Cl, C 2 H 6, C 2 H 5 OH (3) C 2 H 5 OH, C 2 H 6, C 2 H 5 Cl (4) C 2 H 5 OH, C 2 H 5 ONa, C 2 H 5 Cl 60. Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity? (1) NO 2 (2) N 2 O (3) N 2 O 5 (4) NO 61. Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is (1) CH 2 = CH 2 (2) CH 3 CH 3 (3) CH CH (4) CH The compound C 7 H 8 undergoes the following reactions : 59. \º A õúx Na Ehß \º x B I u QÓx ØÖ PCl 5 ²hß C I u QÓx. B ØÖ C JßÓõP ÂøÚ x øhgzvà Dzuøµ u QÓx. A, B ØÖ C ß Á ø\ õúx (1) C 2 H 5 OH, C 2 H 5 Cl, C 2 H 5 ONa (2) C 2 H 5 Cl, C 2 H 6, C 2 H 5 OH (3) C 2 H 5 OH, C 2 H 6, C 2 H 5 Cl (4) C 2 H 5 OH, C 2 H 5 ONa, C 2 H 5 Cl 60. C ØøP ØÖ Ûu ö\ À CµsiÚõ¾ ÁÎ sh»zvà EÒ Szu k ø mµáß BUø\kPÐÒ Gx JßÖ ö õxáõú õ_ kzv Qøh õx? (1) NO 2 (2) N 2 O (3) N 2 O 5 (4) NO 61. øím µõpõº ß (A) µõªýhß v½miúõà ÂøÚ x BÀøPÀ µõø øh E ÁõUS AøÁ Eºmì ÂøÚ ß» õßsus SøÓÁõÚ Põº ß AqUPøÍ öpõsh Áõ² øím µõpõº ÚõP õøó AøhQÓx. (A) ÁõÚx (1) CH 2 = CH 2 (2) CH 3 CH 3 (3) CH CH (4) CH \º C 7 H 8 RÌPsh ÂøÚø QÓx : The product C is (1) o-bromotoluene (2) 3-bromo-2,4,6-trichlorotoluene (3) m-bromotoluene (4) p-bromotoluene ÂøÚö õ Ò C õúx (1) o- µõ õöhõ¾âß (2) 3- µõ õ -2,4,6- møµs»õ µõöhõ¾âß (3) m- µõ õöhõ¾âß (4) p- µõ õöhõ¾âß HLAAC/KK/Page 17 SPACE FOR ROUGH WORK English/Tamil

18 63. Which of the following carbocations is expected to be most stable? 63. RÌPsh Põº ß º A Û À Gx ªP AvP {ø» zußø Eøh uõp Gvº õºup»õ? 64. Which of the following is correct with respect to I effect of the substituents? (R = alkyl) (1) NR 2 < OR < F (2) NH 2 > OR > F (3) NH 2 < OR < F (4) NR 2 > OR > F 65. Which of the following molecules represents the order of hybridisation sp 2, sp 2, sp, sp from left to right atoms? (1) CH 2 = CH C CH (2) CH 2 = CH CH = CH 2 (3) HC C C CH (4) CH 3 CH = CH CH I v½k ÂøÍøÁ ö õ zx RÌPshÁØÖÒ Gx \ õúx : (R = BÀøPÀ) (1) NR 2 < OR < F (2) NH 2 > OR > F (3) NH 2 < OR < F (4) NR 2 > OR > F 65. Chª x Á» õp AqUPÒ RÌPsh G u»utôà sp 2, sp 2, sp, sp CÚUP» Á ø\ø U Põmk? (1) CH 2 = CH C CH (2) CH 2 = CH CH = CH 2 (3) HC C C CH (4) CH 3 CH = CH CH 3 HLAAC/KK/Page 18 SPACE FOR ROUGH WORK English/Tamil

19 66. Identify the major products P, Q and R in the following sequence of reactions : 66. RÌPsh ÂøÚPÎß Á ø\ À UQ ÂøÚö õ ÒPÒ P, Q ØÖ R I PshÔ Ä : } ¼ Which of the following compounds can form a zwitterion? (1) Acetanilide (2) Benzoic acid (3) Aniline (4) Glycine HLAAC/KK/Page 19 RÌPsh \º [PÎÀ Gx ì_âmhº A Ûø E ÁõUS? (1) A]mhÛø»k (2) ö ß \õ U Aª» (3) AÜ¼ß (4) UøÍ]ß SPACE FOR ROUGH WORK English/Tamil

20 68. Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations : M M a. 60 ml HCl + 40 ml NaOH M M b. 55 ml HCl + 45 ml NaOH c. 75 ml 5 M HCl + 25 ml 5 M NaOH M M d. 100 ml HCl ml NaOH ph of which one of them will be equal to 1? (1) a (2) d (3) b (4) c 69. On which of the following properties does the coagulating power of an ion depend? (1) Size of the ion alone (2) Both magnitude and sign of the charge on the ion (3) The magnitude of the charge on the ion alone (4) The sign of charge on the ion alone 70. Given van der Waals constant for NH 3, H 2, O 2 and CO 2 are respectively 4 17, 0 244, 1 36 and 3 59, which one of the following gases is most easily liquefied? (1) H 2 (2) O 2 (3) NH 3 (4) CO The solubility of BaSO 4 in water is gl 1 at 298 K. The value of its solubility product (K sp ) will be (Given molar mass of BaSO 4 = 233 g mol 1 ) (1) mol 2 L 2 (2) mol 2 L 2 (3) mol 2 L 2 (4) mol 2 L öáæ ÁÖ ö\ôäpîà NaOH ØÖ HCl I öáæ ÁÖ PÚAÍÂÀ P» x u õ UP mh RÌPsh Pøµ\ÀPÎÀ : M M a. 60 ml HCl + 40 ml NaOH M M b. 55 ml HCl + 45 ml NaOH c. 75 ml 5 M HCl + 25 ml 5 M NaOH M M d. 100 ml HCl ml NaOH Guß JßÔß ph BÚx 1 US \ õp C US? (1) a (2) d (3) b (4) c 69. RÌPsh G u s PÎÀ J A Û ß v uà vóß \õº v US? (1) A Û ß AÍÂÀ mk (2) A Û ß ªß_ø AÍÄ ØÖ SÔ Cµsøh² (3) A Û ß ªß_ø AÍÂÀ mk (4) A Û ß ªß_ø SÔø mk 70. NH 3, H 2, O 2 ØÖ CO 2 US öpõkup mh Áõshº ÁõÀì õô¼pò øó 4 17, 0 244, 1 36 ØÖ 3 59, RÌPsh Áõ²UPÎÀ Gx JßÖ ªP GÎuõP vµá õs : (1) H 2 (2) O 2 (3) NH 3 (4) CO K À } À BaSO 4 ß PøµvÓß gl 1. Auß PøµvÓß ö UP (K sp ) v õúx : (öpõkup mh BaSO 4 ß õ»õº {øó = 233 g mol 1 ) (1) mol 2 L 2 (2) mol 2 L 2 (3) mol 2 L 2 (4) mol 2 L 2 HLAAC/KK/Page 20 SPACE FOR ROUGH WORK English/Tamil

21 72. The bond dissociation energies of X 2, Y 2 and XY are in the ratio of 1 : 0 5 : 1. H for the formation of XY is 200 kj mol 1. The bond dissociation energy of X 2 will be (1) 100 kj mol 1 (2) 800 kj mol 1 (3) 200 kj mol 1 (4) 400 kj mol When initial concentration of the reactant is doubled, the half-life period of a zero order reaction (1) is doubled (2) is tripled (3) is halved (4) remains unchanged 74. For the redox reaction Mn 2 O + C O + H + Mn 2+ + CO 2 + H 2 O the correct coefficients of the reactants for the balanced equation are Mn 2 O 4 C 2 O 4 H+ (1) (2) (3) (4) Which one of the following conditions will favour maximum formation of the product in the reaction, A 2 (g) + B 2 (g) X 2 (g) r H = X kj? (1) Low temperature and low pressure (2) High temperature and high pressure (3) Low temperature and high pressure (4) High temperature and low pressure 76. The correction factor a to the ideal gas equation corresponds to (1) volume of the gas molecules (2) electric field present between the gas molecules (3) density of the gas molecules (4) forces of attraction between the gas molecules 72. X 2, Y 2 ØÖ XY ß øn øp BØÓÀ 1 : 0 5 : 1 GßÓ ÂPuzvÀ EÒÍx. XY E ÁõuÀ H BÚx 200 kj mol 1. X 2 Âß øn øp BØÓ»õÚx (1) 100 kj mol 1 (2) 800 kj mol 1 (3) 200 kj mol 1 (4) 400 kj mol ÂøÚ kö õ Îß öuõhup ö\ôä C h[põs õx, J ä ÁøP ÂøÚ ß Aøµ ÁõÌÄ Põ» (1) C h[põs (2) h[põs (3) õv õs (4) õóõx C US 74. BU]á ÚØÓ JkUP ÂøÚ õú Mn 2 O + C 4 2 O + H + Mn 2+ + CO H 2 O Cuß \ õú õup mh \ ß õmiß ÂøÚ k ö õ Îß \ õú öpêáõúx Mn 2 O 4 C 2 O 4 H+ (1) (2) (3) (4) RÌPsh Ga`Ì{ø» À AvP m\ ÂøÚö õ Ò CÆÂøÚ À E ÁõP HxÁõS, A 2 (g) + B 2 (g) X 2 (g) r H = X kj? (1) SøÓ u öá {ø» ØÖ SøÓ u AÊzu (2) AvP öá {ø» ØÖ AvP AÊzu (3) SøÓ u öá {ø» ØÖ AvP AÊzu (4) AvP öá {ø» ØÖ SøÓ u AÊzu 76. À¼ À Áõ² \ ß õmià v zuu Põµo a CuØS öuõhº øh x (1) Áõ²»UTÖPÎß PÚAÍÄ (2) Áõ²»UTÖPÐUQøh C US ªß» (3) Áõ²»UTÖPÎß Ahºzv (4) Áõ²»UTÖPÐUQøh EÒÍ PÁºa] Âø\ HLAAC/KK/Page 21 SPACE FOR ROUGH WORK English/Tamil

22 77. The correct order of N-compounds in its decreasing order of oxidation states is (1) HNO 3, NO, NH 4 Cl, N 2 (2) HNO 3, NH 4 Cl, NO, N 2 (3) HNO 3, NO, N 2, NH 4 Cl (4) NH 4 Cl, N 2, NO, HNO Which one of the following elements is unable to 3 form MF6 ion? (1) Al (2) B (3) Ga (4) In 79. Considering Ellingham diagram, which of the following metals can be used to reduce alumina? (1) Zn (2) Mg (3) Fe (4) Cu 80. The correct order of atomic radii in group 13 elements is (1) B < Al < Ga < In < Tl (2) B < Ga < Al < Tl < In (3) B < Al < In < Ga < Tl (4) B < Ga < Al < In < Tl 81. Which of the following statements is not true for halogens? (1) All are oxidizing agents. (2) All but fluorine show positive oxidation states. (3) All form monobasic oxyacids. (4) Chlorine has the highest electron-gain enthalpy. 82. In the structure of ClF 3, the number of lone pairs of electrons on central atom Cl is (1) two (2) four (3) one (4) three 77. N \º [PÎß \ õú CÓ[SÁ ø\ BU]á ÚØÓ {ø»pîß Á ø\ õúx (1) HNO 3, NO, NH 4 Cl, N 2 (2) HNO 3, NH 4 Cl, NO, N 2 (3) HNO 3, NO, N 2, NH 4 Cl (4) NH 4 Cl, N 2, NO, HNO RÌPsh uû zvà Gx GßÖ E ÁõUS C»õx? (1) Al (2) B (3) Ga (4) In 3 6 M F A Ûø 79. GÀ¼[íõ hzøu P zvà öpõshõà, RÌPsh E»õP[PÎÀ Gx A¾ªÚõøÁ JkUP ß kqóx? (1) Zn (2) Mg (3) Fe (4) Cu 80. öuõsv 13 uû [PÎß \ õú Aq Bµ[PÎß Á ø\ õúx (1) B < Al < Ga < In < Tl (2) B < Ga < Al < Tl < In (3) B < Al < In < Ga < Tl (4) B < Ga < Al < In < Tl 81. RÌPsh TØÖPÎÀ íõ»áßpðus Gx Esø Àø»? (1) GÀ»õ Ba]á ÚØÔ õs. (2) Ð øú uâºzx AøÚzx º BU]á ÚØÓ {ø»ø Põmk. (3) GÀ»õ JØøÓPõµ BU] Aª»zøu u. (4) S Íõ ß AvP õú G»Umµõß & HØÓÀ GßuõÀ Eøh x. 82. ClF 3 Aø À, ø Aq Cl EÒÍ uûzu Gö»Umµõß CµmøhPÎß GsoUøP õúx (1) Cµsk (2) õßs (3) JßÖ (4) ßÖ HLAAC/KK/Page 22 SPACE FOR ROUGH WORK English/Tamil

23 83. The correct difference between first- and second-order reactions is that (1) the half-life of a first-order reaction does not depend on [A] 0 ; the half-life of a second-order reaction does depend on [A] 0 (2) a first-order reaction can be catalyzed; a second-order reaction cannot be catalyzed (3) the rate of a first-order reaction does not depend on reactant concentrations; the rate of a second-order reaction does depend on reactant concentrations (4) the rate of a first-order reaction does depend on reactant concentrations; the rate of a second-order reaction does not depend on reactant concentrations 84. Among CaH 2, BeH 2, BaH 2, the order of ionic character is (1) CaH 2 < BeH 2 < BaH 2 (2) BeH 2 < BaH 2 < CaH 2 (3) BeH 2 < CaH 2 < BaH 2 (4) BaH 2 < BeH 2 < CaH In which case is the number of molecules of water maximum? (1) 0 18 g of water (2) L of water vapours at 1 atm and 273 K (3) 18 ml of water (4) 10 3 mol of water 86. Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below : 83. uà ØÖ Cµshõ ÁøP ÂøÚPÎß \ õú ÁÖ õk Gß x (1) uà ÁøP ÂøÚ ß Aøµ ÁõÌÄ [A] 0 \õº v UPõx; Cµshõ ÁøP ÂøÚ ß Aøµ ÁõÌÄ [A] 0 \õº v US (2) uà ÁøP ÂøÚø ÂøÚ³UP kzu»õ ; Cµshõ ÁøP ÂøÚø ÂøÚ³UP kzu C Áõx (3) uà ÁøP ÂøÚ ß ÂøÚ ÁP ÂøÚ k ö õ Îß ö\ôøá \õº v UPõx; Cµshõ ÁøP ÂøÚ ß ÂøÚ ÁP ÂøÚ kö õ Îß ö\ôøá \õº v US (4) uà ÁøP ÂøÚ ß ÂøÚ ÁP ÂøÚ k ö õ Îß ö\ôøá \õº v US ; Cµshõ &ÁøP ÂøÚ ß ÂøÚ ÁP ÂøÚ k ö õ Îß ö\ôøá \õº v UPõx 84. CaH 2, BeH 2, BaH 2 BQ ÁØÔÝÒ A Û s ß Á ø\ õúx (1) CaH 2 < BeH 2 < BaH 2 (2) BeH 2 < BaH 2 < CaH 2 (3) BeH 2 < CaH 2 < BaH 2 (4) BaH 2 < BeH 2 < CaH RÌPshÁØÔÀ GvÀ }º»UTÖPÎß GsoUøP AvP m\ õ C US? (1) 0 18 g } À (2) 1 atm ØÖ 273 K À L }º BÂ À (3) 18 ml } À (4) 10 3 õà } À 86. R Ç EÒÍ hzvà Põmi x õà öáæ ÁÖ emf v øh µõªûß BU]á ÚØÓ {ø» À HØ k õøózøu P zvà öpõshõà : Then the species undergoing disproportionation is (1) BrO 4 (2) Br 2 (3) BrO 3 (4) HBrO ÂQua ]øuäus EÒÍõS EÖ õúx BS. (1) BrO 4 (2) Br 2 (3) BrO 3 (4) HBrO HLAAC/KK/Page 23 SPACE FOR ROUGH WORK English/Tamil

24 87. Consider the following species : CN +, CN, NO and CN Which one of these will have the highest bond order? (1) CN (2) CN + (3) NO (4) CN 88. Which one is a wrong statement? (1) An orbital is designated by three quantum numbers while an electron in an atom is designated by four quantum numbers. 87. CÆÄÖ PøÍ GkzxUöPõshõÀ : CN +, CN, NO ØÖ CN Gx JßÖ AvP õú øn uµzøu Eøh x? (1) CN (2) CN + (3) NO (4) CN 88. Gx J uáóõú TØÖ? (1) J Bº mhõà ßÖ SÁõsh GsPÍõÀ SÔ h kqóx B Ý Jº AqÂß J Gö»Umµõß õßs SÁõsh GsPÍõÀ SÔ h kqóx. (2) N AqÂØS EÒÍ Gö»Umµõß Aø (2) The electronic configuration of N atom is (3) Total orbital angular momentum of electron in s orbital is equal to zero. (4) The value of m for d z 2 is zero. 89. Iron exhibits bcc structure at room temperature. Above 900 C, it transforms to fcc structure. The ratio of density of iron at room temperature to that at 900 C (assuming molar mass and atomic radii of iron remains constant with temperature) is (1) (2) (3) (4) Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s 2 2s 2 2p 3, the simplest formula for this compound is (1) MgX 2 (2) Mg 2 X (3) Mg 2 X 3 (4) Mg 3 X 2 (3) s -Bº mhõ¼à EÒÍ Gö»UmµõÛß ö õzu Bº mhõà Põn E u ä zvøs \ õ EÒÍx. (4) d z 2 ß m v ä õ EÒÍx. 89. AøÓ öá {ø» À C bcc Aø ø Eøh x. 900 C ØS À Ax fcc Aø ØS õö. AøÓ öá {ø»us, 900 C ¾ C ß Ahºzv ÂQu õúx (C ß õ»õº {øó² ØÖ Aq Bµ öá {ø»ø ö õ zx õóõx C uõp öpõshõà) (1) (2) (3) (4) ö UÜ] J uû (X) Ehß ÂøÚ x J A Û \º zøu E ÁõUS. (X) ß uõì{ø» G»Umµõß Aø õúx 1s 2 2s 2 2p 3 GÛÀ, Aa \º zvß GÎø õú Áõ õhõúx (1) MgX 2 (2) Mg 2 X (3) Mg 2 X 3 (4) Mg 3 X 2 HLAAC/KK/Page 24 SPACE FOR ROUGH WORK English/Tamil

25 91. Pollen grains can be stored for several years in liquid nitrogen having a temperature of (1) 80 C (2) 196 C (3) 120 C (4) 160 C 92. Oxygen is not produced during photosynthesis by (1) Nostoc (2) Cycas (3) Green sulphur bacteria (4) Chara 93. What is the role of NAD + in cellular respiration? (1) It functions as an electron carrier. (2) It is a nucleotide source for ATP synthesis. (3) It functions as an enzyme. (4) It is the final electron acceptor for anaerobic respiration. 94. Which of the following elements is responsible for maintaining turgor in cells? (1) Sodium (2) Potassium (3) Magnesium (4) Calcium 95. Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other? (1) Yucca (2) Banana (3) Hydrilla (4) Viola 96. In which of the following forms is iron absorbed by plants? (1) Ferrous (2) Free element (3) Ferric (4) Both ferric and ferrous 97. Double fertilization is (1) Fusion of one male gamete with two polar nuclei (2) Fusion of two male gametes with one egg (3) Fusion of two male gametes of a pollen tube with two different eggs (4) Syngamy and triple fusion 91. vµá ø mµáûà Pµ uzxpòpøí» BskPÒ \ªzx øáup C ¾ AzvµÁ ø mµáûà öá {ø» (1) 80 C (2) 196 C (3) 120 C (4) 160 C 92. CÁØÔß JÎa \ºUøP ß õx BUêáß öáî h kávàø» (1) õìhõu (2) ø\pì (3) _ø \À º õuj õupò (4) Põµõ 93. ö\à _Áõ]zu¼À NAD + ß [S GßÚ? (1) Ax Gö»Umµõß Phzv õp ö\ À kqóx. (2) Ax ATP u õ À J {³UÎ õøhk». (3) Ax J ö õv õp ö\ À kqóx. (4) Ax PõØÔÀ»õ _Áõ\zvÀ Pøh{ø» Gö»Uµõß HØ. 94. RÌPshÁØÖÒ GzuÛ ö\àpîà ÂøÓ µõ ß ö õö ØQÓx? (1) \õi (2) ö õmhõ] (3) UÜ] (4) PõÀ] 95. RÌPsh G u uõáµ[pðò JßÖ, A x a] ß J ]ØÔÚzxhß ö [Q z öuõhº öpõsi uúõà, JßÔßÔ ØöÓõßÖ uúx ÁõÌUøP _ÇØ]ø {øóä ö\ C»õx? (1) ³UPõ (2) ÁõøÇ (3) øím À»õ (4) øá õ»õ 96. RÌPshÁØÔß G u {ø»pîà C uõáµ[píõà QµQUP kqóx? (1) ö ºµì (2) PmkÓõ uû (3) ö º U (4) ö º U ØÖ ö ºµì Cµsk 97. CµmøhU P ÄÖuÀ Gß x (1) J Bs CÚa ö\à, C x Á EmP UPÐhß CønÁx (2) C Bs CÚa ö\àpò Jº Ashzxhß CønÁx (3) Pµ uu SÇ¼ß C Bs CÚa ö\àpò C ÁÖ Ash[PÐhß CønÁx (4) Esø õú P ÄÖuÀ (]ß Pª) ØÖ ÂønÄ HLAAC/KK/Page 25 SPACE FOR ROUGH WORK English/Tamil

26 98. A new variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is related to (1) Sharbati Sonora (2) Lerma Rojo (3) Co-667 (4) Basmati 99. In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is (1) Council for Scientific and Industrial Research (CSIR) (2) Research Committee on Genetic Manipulation (RCGM) (3) Indian Council of Medical Research (ICMR) (4) Genetic Engineering Appraisal Committee (GEAC) 100. Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes? (1) Ti plasmid (2) phage (3) Retrovirus (4) pbr Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called (1) Biopiracy (2) Biodegradation (3) Bio-infringement (4) Bioexploitation 102. The correct order of steps in Polymerase Chain Reaction (PCR) is (1) Annealing, Extension, Denaturation (2) Denaturation, Extension, Annealing (3) Extension, Denaturation, Annealing (4) Denaturation, Annealing, Extension 103. Select the correct match : (1) F 2 Recessive parent Dihybrid cross (2) T.H. Morgan Transduction (3) Ribozyme Nucleic acid (4) G. Mendel Transformation 98. J v A ] P Ax }sh Põ» C v õâà EÒÍ õx J öáî õmk {ÖÁÚzuõÀ Põ ø ö Ó mkòíx. Ax (1) \º v \õ Úµõ (2) ö»º õ µõáõ (3) Co-667 (4) õ_ v 99. C v õâà, µ õøó ö\ mh E Ú[PÎß õxpõ ø v k ö\ x ö õx UPÎß ß õmiøus AÔ P ö\ ö õö ÁQUS {ÖÁÚ (1) AÔÂ À ØÖ öuõèø\õº B ÄUPõÚ SÊ (CSIR) (2) µ ö õ Ò øp õðáuøupõú Bµõ a]u SÊ (RCGM) (3) C v õâß zxá Bµõ a]u SÊ (ICMR) (4) µ ö õô À v mku SÊ (GEAC) 100. RÌPshÁØÖÒ Ûu ¼ õø\m ö\à¼à J DNA xshzøu Emö\¾zu ö õxáõp ß k Phzv Gx? (1) Ti Íõìªk (2) ä (3) öµm µõøáµì (4) pbr ßÚõmk {ÖÁÚ[PÒ HøÚ õmiß E º ÁÍ[PøÍ², Auß UPøÍ² öuõhº øh õmiß AÝ v ßÔ ß kzxáx CÆÁõÖ AøÇUP kqóx (1) E º\õº v mk (2) E PÍõÀ ]øuzuà (3) E º\õº Azx«ÓÀ (4) E º\õº _µshà 102. õ¼ µì \[Q¼ ÂøÚ ß (PCR) i {ø»pîß \ õú Á ø\ (1) uúõøóà, }m]²öuà, C À ]øuuà (2) C À ]øuuà, }m]²öuà, uúõøóà (3) }m]²öuà, C À ]øuuà, uúõøóà (4) C À ]øuuà, uúõøóà, }m]²öuà 103. \ õp ö õ zu mhøuz uº öukupä : (1) F 2 Jk[S s & C s P» ö Ø Óõº (2) T.H. õºpß & ~soøh õøó (3) øµ õø\ & {³UÎU Aª» (4) G. ö shà & C À õøó HLAAC/KK/Page 26 SPACE FOR ROUGH WORK English/Tamil

27 104. Niche is (1) the physical space where an organism lives (2) the range of temperature that the organism needs to live (3) all the biological factors in the organism s environment (4) the functional role played by the organism where it lives 105. Which of the following is a secondary pollutant? (1) CO 2 (2) SO 2 (3) CO (4) O Natality refers to (1) Birth rate (2) Number of individuals leaving the habitat (3) Death rate (4) Number of individuals entering a habitat 107. World Ozone Day is celebrated on (1) 21 st April (2) 16 th September (3) 5 th June (4) 22 nd April 108. What type of ecological pyramid would be obtained with the following data? Secondary consumer : 120 g Primary consumer : 60 g Primary producer : 10 g (1) Pyramid of energy (2) Upright pyramid of numbers (3) Inverted pyramid of biomass (4) Upright pyramid of biomass 109. In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen? (1) Cl (2) Fe (3) Carbon (4) Oxygen 104. ÁÍ õ[s Gß x (1) E Ú uõß ÁõÊ E À ØÖ E À {ø»pîß Ãaø\ ß kzx Âu (2) E Ú ÁõÇz uøá õú um öám Ãa_ (3) E Úzvß _ØÖ `Ç¼À EÒÍ AøÚzx E À ØÖ C Ø À PõµoPÒ (4) E Ú ÁõÊ ChzvÀ Auß ö\ À õmk [S 105. RÌPshÁØÖÒ Cµshõ {ø» õ_ Gx? (1) CO 2 (2) SO 2 (3) CO (4) O õhõ¼mk Gß x GøuU SÔUS (1) Ó ÂQu (2) J ÁõÈhzøu Âmk }[S uû E ºPÎß GsoUøP (3) CÓ ÂQu (4) J ÁõÈhzvÀ S uû E ºPÎß GsoUøP 107. E»P K \õß vú öpõshõh káx (1) 21 H µà (2) 16 ö\ h º (3) 5 ãß (4) 22 H µà 108. RÌPsh uµäpî¼ x GÆÁøP õú `Ì{ø»U T ö Ó k? Cµshõ {ø» ~Pº Áõº : 120 g uà {ø» ~Pº Áõº : 60 g uà {ø» EØ zv õíº : 10 g (1) BØÓÀ T (2) µõú GsoUøPU T (3) E º ö õ Ò uø»rì T (4) Á º ö õ Ò µõú T 109. RÌPsh uû [PÎÀ ìm µm hõì À J \õß ]øu À ÂøÚ³UQ õp ö\ À mk»utö BUêáß öáî h Põµn õáx Gx? (1) Cl (2) Fe (3) Põº ß (4) BUêáß HLAAC/KK/Page 27 SPACE FOR ROUGH WORK English/Tamil