FIITJEE RET 7 ( )(1 ST YEAR_REGULAR) IIT 2015 (P1) DATE: Time: 3 hours Maximum Marks: 264

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1 FIITJEE RET 7 ( )(1 ST YEAR_REGULAR) IIT 015 (P1) DATE: Time: hours Maximum Marks: 64 INSTRUCTIONS: A. General 1. This booklet is your Question Paper containing 60 questions.. Blank papers, clipboards, log tables, slide rules, calculators, cellular phones, pagers and electronic gadgets in any form are not allowed to be carried inside the examination hall.. Fill in the boxes provided for Name and Enrolment No. 4. The answer sheet, a machine-readable Objective Response (ORS), is provided separately. 5. DO NOT TAMPER WITH / MULTILATE THE ORS OR THE BOOKLET. B. Filling in the OMR: 6. The instructions for the OMR sheet are given on the OMR itself. C. Question paper format: 7. The question paper consists of parts (Physics, Chemistry and Mathematics). Each part consists of two sections. 8. Section I contains 8 questions. The answer to each question is a single digit integer, ranging from 0 to 9 (both inclusive). 9. Section II contains 10 multiple choice questions. Each question has four choices (A), (B), (C) and (D) out of which ONE or MORE are correct. 10. Section III contains Match the following type questions and you will have to match entries in Column I with the entries in Column II D. Marking Scheme 11. For each question in Section I, you will be awarded 4 marks if you darken ALL the bubble(s) corresponding to the correct answer(s) ONLY. In all other cases zero (0) marks will be awarded. No negative marks will be awarded for incorrect answers in this section. 1. For each question in Section II, you will be awarded 4 marks if you darken ALL the bubble(s) corresponding to the correct answer(s) ONLY. In all other cases zero (0) marks will be awarded. marks will be awarded for incorrect answers in this section. 1. For each question in Section III, you will be awarded marks for each entry in Column I; if you darken ALL the bubble(s) corresponding to the correct answer(s) ONLY. In all other cases zero (0) marks will be awarded. 1 marks will be awarded for incorrect answers in this section. Don t write / mark your answers in this question booklet. If you mark the answers in question booklet, you will not be allowed to continue the exam. NAME: ENROLLMENT NO.:

2 PAPER I PART I: PHYSICS SECTION 1 (Maximum Marks: ) This section contains EIGHT questions. The answer to each question is a SINGLE DIGIT INTEGER ranging from 0 to 9, both inclusive. For each question, darken the bubble corresponding to the correct integer in the ORS. Marking scheme: +4 If the bubble corresponding to the answer is darkened. 0 In all other cases An inclined plane makes an angle of 0 with the horizontal. A 0 groove OA = 5m cuts in the plane makes an angle of 0 with OX. A short smooth cylinder is free to slide down under the influence of gravity. If time taken by the cylinder to reach from A to O is a sec and speed of cylinder at the point O is b m/sec then ab is. A monkey of mass m =1 kg clings to a rope slung over a light frictionless pulley. The opposite end of the rope is tied to a weight of mass M = m lying on a smooth horizontal plane. The tension in the rope for which the monkey moves upwards with an acceleration a m/sec relative to the rope is T = W N (neglect the mass of pulley and rope). Find W.. Two blocks of mass m =10 kg and M= 0 kg are connected by a string passing over a pulley B as shown in the figure. Another string connects the centre of pulley B and passes over another pulley A as shown. An upward force F is applied at the centre of pulley A. Both the pulleys are massless. When F is 600 N, then The acceleration of mass m is

3 1 4. A ball of mass 00 gm is thrown with a speed 0ms. The ball strikes a bat and rebounds along the same line at a speed of 1 40ms. Variation in the interaction force, as long as the ball remain in contact with the bat, is as shown in the figure If ' ' is the speed of the ball in m/s at the instant the force acting on it is maximum then 5 is ms is millisecond. 5. A sphere of mass 1 kg is placed on two inclined planes of angle 0 and 60 with horizontal, as shown. Find the normal reaction at point P (in Newton) 6. A block of metal weighing kg is resting on a frictionless plane. It is struck by a jet releasing water at a rate of 1 kg/s and at speed of 5 m/s. If initial acceleration of the block is a m/sec then value of (a+1) is 7. You are designing an elevator for a hospital. The force exerted on a passenger by the floor of the elevator is not to exceed 1.60 times the passenger s weight. The elevator accelerates upward with constant acceleration for a distance of.0 m and them starts to slow down. What is the maximum speed (in ms 1 ) of the elevator 8. The elevator shown in fig is descending with an acceleration of ms. The mass of the block A = 0.5 kg. Find the force (in Newton) exerted by block A on block B.

4 SECTION (Maximum Marks: 40) This section contains TEN questions. Each question has FOUR options (A), (B), (C) and (D). ONE OR MORE THAN ONE of these four option(s) is (are) correct. For each question, darken the bubble(s) corresponding to all the correct option(s) in the ORS. Marking scheme: +4 If only the bubble(s) corresponding to all the correct option(s) is (are) darkened. 0 If none of the bubbles is darkened. In all other cases 9. At the moment t= 0 the force F = at is applied to a small body of mass m resting on a smooth horizontal plane (a is a positive constant). The permanent direction of this force forms an angle with the horizontal. Then (A) the velocity of the body at the moment of its breaking off the plane is mg cos asin (B) the velocity of the body at the moment of its breaking off the plane is mg sin acos (C) the distance traversed by the body at the moment of it breaking off the mg cos plane is 6a sin (D) the distance traversed by the body at the moment of it breaking off the mg cos plane is a sin 10. Consider the system as shown in fig. If mass of body is times as great as the mass of body 1 and the angle that the inclined plane forms with the horizontal is equal to. The masses of the pulleys and the threads, as well as the friction, are assumed to be negligible. Then (A) acceleration of body is gsin 14 downward if sin g sin sin (B) acceleration of body is upward if 14 g sin (C) acceleration of body 1 is down the inclined plane if if 14 (D) For sin, the system does not move. sin

5 11. At the moment t=0, a stationary particle of mass m experiences a time depended force F at t, where a is a constant vector, is the time during which the given force acts. then (A) the momentum of the particle when the action of the force discontinued is a /6 (B) the momentum of the particle when the action of the force discontinued is a /1 4 (C) the distance covered by the particle while till the force acted is a /1m 4 (D) the distance covered by the particle while till the force acted is a /6m 1. Which of the following are correct? (A) A parachute of weight W strikes the ground with his legs and comes to rest with an upward acceleration of magnitude g. Force exerted on him by ground during landing is 4 W. (B) Two massless spring balances are hung vertically in series from a fixed point and a mass M kg is attached to the lower end of the lower spring balance. Each spring balance reads M kg f (C) A body in equilibrium may be moving with a constant speed along a straight line path (D) A man is standing at a spring platform. If man jumps away from the platform the reading of the spring balance first increases and then decreases to zero 1. The ring shown in the figure is given a constant horizontal acceleration a0 g/. Maximum deflection of the string from the vertical is 0, then 0 0 (A) 0 0 (B) 0 60 (C) At maximum deflection, tension in string is equal to mg (D) At maximum deflection, tension in string is equal to mg 14. A body of mass 5 kg is suspended by the strings making angles 0 and g 10m/s (A) T1 (C) T1 0 with the horizontal as shown in the figure 5N (B) T 5 N (D) T 5N 5 N 0 60

6 15. In figures, the blocks A, B and C of mass m each have acceleration a 1,a and a, respectively, F 1 and F are external force of magnitude mg and mg, respectively. Then (A) a1 a a (B) a1 a a (C) a1 a a (D) a1 a a 16. For the system shown in the figure, there is no friction anywhere. Masses m1 and m can move up or down in the slots cut in mass M. Two non zero horizontal forces F 1 and F ( F 1 F ) are applied as shown. The pulleys are massless and frictionless. Given m1 mthen which of the following is / are correct (A) It is not possible for the entire system to be in equilibrium (B) For some values of F 1 and F, it is possible that entire system is in equilibrium (C) It is possible that F1 and F are applied in such a way that m1 and m remain in equilibrium but M does not. (D) None of the above 17. Small blocks A and B are simultaneously released from apex of a smooth wedge as shown in figure. Select correct alternative(s) (A) Relative acceleration of block B with respect to block A is zero (B) Magnitude of relative acceleration of block B with respect to block A is g initially (C) Speed of block A and B will be same at the bottom of inclined plane (D) The time taken by A and B to reach the bottom of inclined plane will be same

7 18. Consider an infinite mass pulley system as shown. If this system is now released then (A) The acceleration 'a 1 ' is g/ (B) The acceleration 'a 1 ' is g/ mg (C) Tension T1 4mg (D) Tension T1 SECTION (Maximum Marks: 16) This section contains TWO questions. Each question contains two columns, Column I and Column II Column I has four entries (A), (B), (C) and (D) Column II has five entries (P), (Q), (R), (S) and (T) Match the entries in Column I with the entries in Column II One or more entries in Column I may match with one or more entries in Column II. The ORS contains a 4 5 matrix whose layout will be similar to the one shown below: (A) (P) (Q) (R) (S) (T) (B) (P) (Q) (R) (S) (T) (C) (P) (Q) (R) (S) (T) (D) (P) (Q) (R) (S) (T) For each entry in Column I, darken the bubbles of all the matching entries. For example, if entry (A) in Column I matches with entries (Q), (R) and (T), then darken these three bubbles in the ORS. Similarly, for entries (V), (C) and (D). Marking entry in Column I. + If only the bubble(s) corresponding to all the correct match (s) is (are) darkened. 0 If none of the bubbles is darkened. 1 In all other cases.

8 19 Column I gives four different situations involving two blocks of mass m1 and m placed in different ways on smooth horizontal surface as shown. In each of the situations, horizontal force F 1 and F are applied on blocks of mass m 1 and m, respectively and also m F 1 mf 1. Match the statements in column I with the corresponding results in column II Column I Column II (A) Both the blocks are connected by the massless inelastic string. The magnitude of tension in the string is (p) mm 1 F1 F m1 m m1 m F 1 m 1 m F (B) Both the blocks are connected by the massless inelastic string. he magnitude of tension in the string is (q) mm 1 F1 F m1 m m1 m F 1 m 1 m F (C) The magnitude of normal reaction between the blocks is (r) mm 1 F F 1 m1 m m m1 (D) F 1 m 1 m F The magnitude of normal reaction between the blocks is (s) F F 1 mm 1 m 1 m (t) F F 1 mm 1 m 1 m

9 0. Match the following In column-i, different systems are shown. Match them with numerical values of accelerations given in column II. Consider all the surfaces smooth Column I Column II A) A uniform rope of length 10 m and mass 5 kg is placed on a smooth fixed wedge as shown. Initially rope is released from rest. Both ends are at same horizontal level. Then initial acceleration of the rope is a= 7 b= 5 P) m/ s m B) block is not slipping over the wedge Then acceleration of the block A is m 7 o m A Q). m/ s C) -4 A waterjet of cross sectional area 10 m, moving with velocity of 10 m/s hits a vertical plate and comes to rest. If mass of plate is 5 kg, initial acceleration of plate is R) 10 m/ s A m D) S) 8 m/ s 4m Acceleration of block A is T) zero m/ s

10 PART II: CHEMISTRY SECTION 1 (Maximum Marks: ) This section contains EIGHT questions. The answer to each question is a SINGLE DIGIT INTEGER ranging from 0 to 9, both inclusive. For each question, darken the bubble corresponding to the correct integer in the ORS. Marking scheme: +4 If the bubble corresponding to the answer is darkened. 0 In all other cases. 1. In the reaction, 4A B C A4BC, the number of moles of product formed, starting from 1.5 mol of A, 0.8 mol of B and 0.9 mol of C is X. Then the value of 10X is. Hydrazine reacts with KIO in the presence of HCl as NH4 IO H Cl ICl N HO The number of equivalents of N H 4 present in 40g of it is. In the manufacture of HSO 4 from iron pyrites FeS following reaction takes place. 4FeS 11O FeO 8SO SO O SO SO HO HSO4 How many mole of iron pyrites is required for the formation of 196 grams of sulphuric acid? 4. Consider the following reaction AsS 8HNO 4HO 6HAsO 4 9HSO 4 8NO If the moles of electrons are lost by 1mole of AsSis x, then what is the value of x/4? 5. If the number of litres of liquid CCl 4 (density = 1.5g/ml) must be measured out to contain CCl 4 molecules, is equal to y. Then what is the value of y/0.5? 6. The hydrated salt Na CO. xh O undergoes 46% loss is mass on heating and becomes anhydrous. The value of x is 7. When the following redox reaction Cr O H + + xcl Cr + + Cl + 7H O is balanced, what is the value of x/. 8. The molarity of 18% w v aqueous solution of urea is 0.6 x. What is the value of x?

11 SECTION (Maximum Marks: 40) This section contains TEN questions. Each question has FOUR options (A), (B), (C) and (D). ONE OR MORE THAN ONE of these four option(s) is (are) correct. For each question, darken the bubble(s) corresponding to all the correct option(s) in the ORS. Marking scheme: +4 If only the bubble(s) corresponding to all the correct option(s) is (are) darkened. 0 If none of the bubbles is darkened. In all other cases 9. 1gm of mg was burnt in a closed vessel containing gm oxygen. Which of the following are not correct? (A) 0.5 gm of Mg will be left unburnt (B) 1. gm of O will be left unreacted (C).5 gm of MgO will be formed (D) The mixture at the end will have a total weight of gm 4 in acidic medium. The final products contain Cu +, SO and Mn +. If the mol. Wt of Cu S, CuS and Ba(MnO 4 ) are M 1, M and M respectively then. M1 M (A) Eq. wt of Cu S is (B) Eq. wt of CuS 8 6 M (C) Eq. wt of Ba MnO 4 is (D) Cu S and CuS both have same n factor 5 0. When equimolar mixture of Cu S and CuS is titrated with BaMnO 1. If 1 litre of 1 M H PO 4 is reacted with 1 litre of 1M X(OH) as : HPO 4 XOH XHPO 4 HO then : (A) The equivalent weight of base is mol.wt. (B) The eq. wt. of H PO 4 is 98 (C) The resulting solution is required 1 mole NaOH for complete neutralization (D) 1 mole of X(OH) more required for complete neutralization of XHPO 4.. Which molecules are representing the underlined atoms in their highest oxidation state? (A) H S O 8 (B) P 4 O 10 (C) CrOCl (D) Mn O 7. An oxide of nitrogen has 0.4% nitrogen (At. Wt.of N = 14) and its one molecule weight 1.57 x 10 g. Which of the following statement regarding the oxide is (are) true? (A) Its empirical formula is N O (B) Its empirical formula is NO (C) its molecular formula is N O 4 (D) Its molecular formula is N 4 O

12 ml of H O is oxidised to O by 100 ml of 0.01 M KMnO 4 in acidic medium (MnO 4 reduced tomn ). 100 ml of same H O is oxidised to O by V ml of 0.01 M KMnO 4 in basic medium (MnO 4 reduced to MnO ). Hence V is : (A) 500 (B) 100 (C) 100/ (D) 500/ 5. Which of the following represents redox reactions? (A) CrO7 OH CrO4 HO (B) Zn CuSO4 ZnSO4 Cu (C) MnO Mn 4OH 5MnO H O (D) Cu Cu Cu 4 6. For the reaction : I + NaOH NaIO + NaI + H O. Identify the correct statements ( At wt. of Na = ) (A) Reaction is an example of disproportionation (B) Equivalent weight of I mol.wtofi 5 (C) Eq. wt of NaOH in the reaction is 6.66 (D) Eq. wt of NaOH in the reaction is In which of the following compounds, the halogen atom exists in a positive oxidation state? (A) OCl (B) OF (C) OBr (D) ClO 8. 1 mole of H SO 4 can be completely neutralized by (A) mole of NaOH (B) mole of Ca(OH) (C) 1 mole of Ba(OH) (D) 1 mole of Ca(OH) SECTION (Maximum Marks: 16) This section contains TWO questions. Each question contains two columns, Column I and Column II Column I has four entries (A), (B), (C) and (D) Column II has five entries (P), (Q), (R), (S) and (T) Match the entries in Column I with the entries in Column II One or more entries in Column I may match with one or more entries in Column II. The ORS contains a 4 5 matrix whose layout will be similar to the one shown below: (A) (P) (Q) (R) (S) (T) (B) (P) (Q) (R) (S) (T) (C) (P) (Q) (R) (S) (T) (D) (P) (Q) (R) (S) (T) For each entry in Column I, darken the bubbles of all the matching entries. For example, if entry (A) in Column I matches with entries (Q), (R) and (T), then darken these three bubbles in the ORS. Similarly, for entries (V), (C) and (D). Marking entry in Column I. + If only the bubble(s) corresponding to all the correct match (s) is (are) darkened. 0 If none of the bubbles is darkened. 1 In all other cases.

13 9. Match the underlined substance in the reactions listed in column I with their equivalent masses listed in column II.(M = molecular mass of the substance in question) Column I Column II (A) 4 7 FeC O Cr O H Pr oducts (p) (B) 4 4 Fe O MnO H Pr oducts (q) (C) 4 4 (D) KHC O MnO H Pr oducts (r) M 7 H O Cr O H products (s) M 6 M M 40. (A) (B) (C) (D) Column I Column II Molecular weight Eq. wt. (p) When CrI oxidises into CrO 7 and IO 4 Molecular weight Eq. wt. (q) 7 Molecular weight Eq. wt. 61 (r) Molecular weight Eq. wt. 4 (s) When Fe(SCN) oxidises into Fe +, CO and NO When NH 4 SCN oxidizes into SO, 4 SO 4, CO and NO When K 4 [Fe(CN) 6 ] oxidizes into K +, Fe +, CO and NO

14 PART III: MATHEMATICS SECTION 1 (Maximum Marks: ) This section contains EIGHT questions. The answer to each question is a SINGLE DIGIT INTEGER ranging from 0 to 9, both inclusive. For each question, darken the bubble corresponding to the correct integer in the ORS. Marking scheme: +4 If the bubble corresponding to the answer is darkened. 0 In all other cases. 41. The position vectors of the points A, B, C and D are i ˆ j ˆk, ˆ i ˆj ˆ4k, ˆ ˆi ˆj kˆ and 4i ˆ5j ˆ kˆ. It is 17 known that these points are coplanar, then the value of must be 7 4. ˆ ˆ ˆ ˆ ˆ ˆ a i j k, b 4i j 4k and c ˆ i x ˆ ˆ 1j xk are coplanar vectors and c =, then the value of x 1 + x must be 4. ABCD is parallelogram. If L and M are the middle points of BC and CD, then value of k is k AL AM AC, then the 44. If G is the centroid of the triangle ABC, then GA GB GC = 45. If M and N are the mid points of the diagonals AC and BD respectively of a quadrilateral ABCD, then AB AD CB CD = kmn, then the value of k is 46. If the vectors ai ˆˆj k, ˆ ˆi bj ˆkˆ and ˆi ˆj ckˆ (a b c 1) are coplanar, then the value of a 1b 1 c. 47. The value of a such that the vectors i ˆˆj k, ˆ ˆi j ˆkˆ and i ˆaj ˆ 5kˆ are coplanar, is p, then the value of p is 48. In a OAB, E is the mid point of OB and D is a point on AB such that AD : DB = : 1. If OD and AE intersect at P, then the ratio OP : PD is : k, then the value of k is

15 SECTION (Maximum Marks: 40) This section contains TEN questions. Each question has FOUR options (A), (B), (C) and (D). ONE OR MORE THAN ONE of these four option(s) is (are) correct. For each question, darken the bubble(s) corresponding to all the correct option(s) in the ORS. Marking scheme: +4 If only the bubble(s) corresponding to all the correct option(s) is (are) darkened. 0 If none of the bubbles is darkened. In all other cases are parallel if is equal to (A) (B) (C) (D) 49. The two vectors a i ˆ ˆ jk,b ˆ 4i ˆ ˆ j6k ˆ 50. In a triangle ABC, if AC CB, then OA OB equals (A) 5 OC (B) OC 51. If a î ĵ kˆ, bˆ 4î ĵ 4kˆ and (C) OC c î ĵ kˆ (D) None of these are linearly dependent vectors and c =, then (A) =1, = 1 (B) = 1, = 1 (C) = 1, = 1 (D) = 1, = 1 5. Let a, b, c be three non coplanar vectors such that r 1 a b c, r b c a, r a b c, r 4 ab 4c. If r4 p1r1 pr pr then (A) p1 7 (B) p1 p (C) p 1 p p 4 (D) p p 0 where i, j,k ˆ are unit 5. If (x, y, z) (0, 0, 0) and i jk ˆ x ijk ˆ y 4i5j z xi yj zk ˆ vectors along the coordinate axes, then (A) = 0 (B) = (C) = 1 (D) = If ABC is a triangle with sides a, b, c, O, G, H and I be its circumcentre, centroid, orthocentre and incentre respectively. Answer the following questions. Then OG is equal to (A) GH (B) 1 GH (C) 1 GH (D) GI

16 55. The unit vector parallel to the resultant of the vectors i ˆj ˆkˆ and 4i ˆj ˆ kˆ is (A) 1 6i ˆ k ˆ (B) 1 6i ˆ ˆ j (C) 1 6j ˆ k ˆ (D) none of these If a = (, 1, 1), b = (1, 1, 0) and c = (5, 1, 1), then the unit vector parallel to abc, but in the opposite direction is 1 (A) i ˆ ˆ j k ˆ 1 (B) ˆ ˆ ˆ 1 i j k (C) i ˆ ˆ j k ˆ (D) none of these 57. ABC is any triangle and O any point in the plane of the same. If AO, BO and CO meet the sides BC, CA OD OE OF and AB in D, E, F respectively, then = AD BE CF (A) 1 (B) 1 (C) 0 (D) none of these 58. The sides of a parallelogram are i ˆ4j ˆ5kˆ and ˆi j ˆ kˆ. Then the unit vector parallel to one of the diagonals is 1 (A) ˆ ˆ ˆ 1 i 6j k (B) ˆ ˆ ˆ 1 i 6j k (C) ˆ ˆ ˆ 1 i j 8k (D) ˆi j ˆ 8kˆ SECTION (Maximum Marks: 16) This section contains TWO questions. Each question contains two columns, Column I and Column II Column I has four entries (A), (B), (C) and (D) Column II has five entries (P), (Q), (R), (S) and (T) Match the entries in Column I with the entries in Column II One or more entries in Column I may match with one or more entries in Column II. The ORS contains a 4 5 matrix whose layout will be similar to the one shown below: (A) (P) (Q) (R) (S) (T) (B) (P) (Q) (R) (S) (T) (C) (P) (Q) (R) (S) (T) (D) (P) (Q) (R) (S) (T) For each entry in Column I, darken the bubbles of all the matching entries. For example, if entry (A) in Column I matches with entries (Q), (R) and (T), then darken these three bubbles in the ORS. Similarly, for entries (V), (C) and (D). Marking entry in Column I. + If only the bubble(s) corresponding to all the correct match (s) is (are) darkened. 0 If none of the bubbles is darkened. 1 In all other cases.

17 59. Consider the triangle formed by the lines y + x + = 0, y x 5 = 0, 4y + x 14 = 0 Column I Column II (A) Value of a if (0, ) lies inside p. 7 1,, triangle 4 (B) Values of a if (, 0) lies inside q. 4 1 triangle (C) Value of a if (, ) lies inside r. No value of triangle (D) Value of a if (1, ) lies outside triangle s (A) (B) (C) Column I If lines x + y 4 = 0, x y 6 = 0 and x + 4y + = 0 are concurrent, then value of is If the points ( + 1, 1), ( + 1, ) and ( +, ) are collinear, then the value of is If line x + y 1 = 0, passing through the intersection of x y + 1 = 0 Column II p. 4 q. 1 r. 4 and x + y 5 = 0, is perpendicular to one of them, then the value of is (D) If line y x 1 + = 0 is equidistant from the points (1, ) and (, 4), then is s.

18 PHYSICS FIITJEE RET 7 ( )(1 ST YEAR_REGULAR) IIT 015 (P1)_SET A DATE: ANSWERS C 10. BONUS 11. A, C 1. A, B, C, D 1. A, D 14. A, D 15. A, C 16. A 17. B, C 18. A, C 19. A q, B r, C BONUS, D r 0. A t, B q, C p, D r CHEMISTRY A, C 0. A, B 1. A, C. A, B, C, D. B, C 4. D 5. B, C, D 6. A, B, D 7. A, C, D 8. A, C, D 9. BONUS 40. A q ; B p ; C s ; D r MATHEMATICS D 50. A 51. D 5. B, C 5. BONUS 54. B 55. A 56. B 57. A 58. A, D 59. A s; B r; C q; D p,q 60. A p ; B Bonus; C p, r; D Bonus

19 FIITJEE RET 7 ( )(1 ST YEAR_REGULAR) IIT 015 (P1)_SET B DATE: ANSWERS PHYSICS A, D 10. A, C 11. A 1. B, C 1. A, C 14. C 15. Bonus 16. A, C 17. A, B, C, D 18. A, D 19. A t, B q, C p, D r 0. A q, B r, C Bonus, D r CHEMISTRY D 0. B, C, D 1. A, B, D. A, C, D. A, C, D 4. A, C 5. A, B 6. A, C 7. A, B, C, D 8. B, C 9. A q ; B p ; C s ; D r 40. Bonus MATHEMATICS B 50. A 51. B 5. A 5. A, D 54. D 55. A 56. D 57. B, C 58. A, D 59. A p; B Bonus; C p, r; D Bonus 60. A s; B r; C q; D p, q

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