SHARADA VIDYANIKETHANA PUBLIC SCHOOL

&

PU COLLEGE

PRATIBHA PRAVEENA SCHOLARSHIP EXAMINATION

INSTRUCTIONS

1. The booklet is your Question Paper. Do not break the seal of this booklet before being instructed to do

so by the invigilator.

2. The question paper Series CODE is printed on the right hand top corner of this sheet.

3. Blank spaces and blank pages are provided in the question paper for your rough work. No additional

sheets will be provided for your rough work.

4. Blank papers, clipboards, log tables, slide rules, calculators, camera, cellular phones, papers and

electronic gadgets are NOT allowed inside the examination hall.

5. Write your name and Form number in the space provided on the back cover of this booklet.

6. The answer sheet, a machine – readable Optical Mark Recognition (OMR), is provided separately.

7. DO NOT TAMPER WITH/MUTILATE THE OMR OR THE BOOKLET

8. On breaking the seal of the booklet check that it contains 9 pages and all the 90 questions and

corresponding answer choices are legible.

9. A candidate has to write his/ her answer in the OMR sheet by appropriate bubble with the help of

Black/Blue ball point pen as the correct answer (s) of the question attempted.

10. Write all information and sign in the box provided on part of the OMR.

11. The duration of test is 2 Hours and question paper contains 90 questions. The Max marks are 360.

Question Paper consists of 4 parts (Physics, Chemistry, Mathematics and Biology). Physics, Chemistry ,

Biology consists of 20 questions and Mathematics consists of 30 questions.

12. All questions are multiple choice questions. Each question has four choices (a), (b), (c) and (d) out of

which ONLY ONE is correct.

13. Each correct answer carries 4 Mark, while 1 mark will be deducted for every wrong answer. [Guessing

of answer is harmful]

Pratibha Praveena Page 2

SHARADA VIDYANIKETHANA PUBLIC SCHOOL & PU COLLEGE

Devinagara, Talapady , Mangaluru – 23

PRATIBHA PRAVEENA EXAM 2017 – 18

1. A body at rest is acted upon by a force F such that it acquired a speed V while moving with an acceleration ‘a’.

The work done by force is

a. 1

2 (

𝐹

𝑉2) 𝑎 b. 𝐹

𝑉2 . 𝑎 c. 1

2(

𝐹

𝑎) 𝑉2 d. 2𝑉2 𝐹𝑎

2. Two springs have force constants 𝑘1 and 𝑘2. These are extended through the same distance 𝑥. If their elastic

energies are 𝐸1 and 𝐸2 then 𝐸1

𝐸2

a. 𝑘1 : 𝑘2 b. 𝑘2 : 𝑘1 c. √𝑘1 : √𝑘2 d. 𝑘12 : 𝑘2

2

3. A force 𝐹 = 𝐴𝑦2 + 𝐵𝑦 + 𝐶 acts on a body in the Y – direction. The workdone by this force during a

displacement from 𝑦 = −𝑎 to 𝑦 = 𝑎 is

a. 2 𝐴𝑎3

3 b.

2 𝐴𝑎3

3+ 2𝑐𝑎 c.

2 𝐴𝑎3

3+

𝐵𝑎3

2+ 𝐶𝑎 d. None of these

4. The nature of force is

a. Alternative always

b. Repulsive always

c. May be alternative or repulsive

d. Cannot predict

5. A uniform conductor of resistance R is cut into 20 equal pieces. Half of them are joined in series and the

remaining half of them is connected in parallel. If the two combination are joined in series, the effective

resistance of all the pieces is

a. R b. 𝑅/2 c. 101 𝑅

200 d.

201 𝑅

200

6. For which of the following substances, resistance decrease with increase in temperature

a. Platinum b. Carbon c. Copper d. Mercury

7. Five resistors each 3 Ω are connected as shown in the figure. The equivalent resistance between X and Y is

a. 3 Ω

b. 8 Ω

c. 6 Ω

d. 15 Ω

X Y

Pratibha Praveena Page 3

8. The distance ‘V’ of the real image formed by a convex lens is measured for various object distance ‘u’ . A graph

is plotted between ‘V’ and ‘u’. Which one of the following graphs is correct

9. An object in denser medium when viewed from a rarer medium appears to be raised. The shift is maximum for

a. Green light b. Yellow light c. Violet light d. Red light

10. In change of phase of substance at a constant temperature, the energy supplied is used up in

a. Increasing the average kinetic energy of its molecules

b. Increasing the potential energy of its molecules

c. Decreasing the potential energy of its molecules

d. Decreasing the average kinetic energy of its molecules

11. A clock with an iron pendulum keeps correct time at 150C. What will be the error in seconds per day. If the

room temperature is 200C? ( The coefficient of linear expansion of iron is 0.0000120C-1)

a. 2.6 s b. 6.2 s c. 1.3 s d. 3.1 s

12. Which of the following has its working based on electromagnetic induction

a. d.c motor alone

b. a.c motor alone

c. transformer alone

d. both a.c generator and transformer

13. A cable carrying a direct current is buried in a wall which stands in a north – south plane. A horizontal campus

needle on the west side of the wall is found to point towards south instead of north. The coil is laid

a. Vertically upwards and the current is also flowing upwards

b. Vertically upwards and the current is also flowing downwards

c. Horizontal with current from South to North

d. Horizontal with current from North to South

14. The velocity of two 𝛼 − particles A and B in a uniform magnetic field is in the ratio of 1 : 3. They move in

different circular orbits in the magnetic field. The ratio of radius of curvature of their paths is

a. 1 : 2 b. 1 : 3 c. 3 : 1 d. 2 : 1

a.

u

V

u

V

u

V

u

V

c.

b. d.

Pratibha Praveena Page 4

15. A charged particle is moving along a magnetic field line. The magnetic force on the particle is

a. Along its velocity

b. Opposite to its velocity

c. Perpendicular to its velocity

d. Zero

16. Which of the following quantities remains constant in a step – down transformer

a. Current b. Voltage c. Power d. None of these

17. A window whose area is 2 m2 opens on a street where the street noise results in an intensity level at the

window of 60 dB. Now if a sound absorber is fitted at the window, how much energy from the street will it

collect in a day

a. 0.73 J b. 0.173 J c. 2.73 J d. 1.73 J

18. An electrical appliance has a rating 100 W, 120 V. The resistance of element of appliance which in use is

a. 100 Ω b. 120 Ω c. 1.2 Ω d. 144 Ω

19. The specific heat capacity of copper is 0.1 cal g-1 0C-1. Its va;ue in J kg-1 k-1 will be

a. 0.84 x 103 b. 0.42 x 103 c. 0.24 x 103 d. 4.2 x 103

20. Two sounds A and B are of frequencies f and 2f respectively. Then

a. Both sounds are identical

b. B is grave , A is shrill

c. B is shrill , A is grave

d. B is louder than A

21. Calculate the number of atoms in a 3.50 mol of atoms?

a. 2.11 x 10^24 b. 4.11 x 10^24 c. 3.11 x 10^24 d. 5.11 x 10^24

22. The mole fraction of alcohol in water is 0.100 Calculate its molality.

a. 5.23 m b. 6.17 m c. 4.32 m d. 3.90 m

23. Calculate the number of moles of gas in a sample occupying 245 mL at 409 torr at 38 C

a. 0.0516 mol b. 0.516 mol c. 0.00516 mol d. 5.16 mol

24. What gas is likely to behave as an ideal gas when subjected to high temperature and low pressure?

a. Krypton b. Hydrogen c. Oxygen d. Helium

25. The oxidation number of a simple ion

a. Is equivalent to its charge

b. Is equal to zero

c. Ranges from 0 to 1

d. Ranges from -1 to 1

26. Insoluble salts can be prepared by

a. Filtration b. Distilation c. Precipitation d. Evaporation

27. What is the range of carbon content for medium steel?

a. 0.6 - 1.0 % b. 0.2 - 0.6 % c. C. 1.0 -1.5 % d. < 0.2 %

28. A siren emits a sound which returns to the source in 4 s. how far away is the object which caused echo from the

source? assume the temperature to be 30 C

a. 1,589 m b. 1,472 m c. 1,267 m d. 1,328 m

Pratibha Praveena Page 5

29. What is the color of solid magnesium oxide?

a. Black b. Brown c. White d. Gray

30. The hardness of margarine formed is dependent on the amount of _________ added.

a. Hydrogen b. Salt c. Milk d. Fat

31. Who coined the term plasma in 1928?

a. William Crookes b. Irving Langmuir c. Albert Einstein d. Eric Cornell

32. Bitumen is used in

a. Electronic generators b. Road surfacing c. Coat tar d. Natural gas

33. Which of the following is not a crystalline allotropic form of carbon

a. Diamond b. Coke c. Graphite d. Fullerene

34. The hydroxide, which is used for treatment of acidity in stomach is

a. Ca (OH)2 b. Mg (OH)2 c. Sr (OH)2 d. Ba(OH)2

35. Switch board and electric plugs are made of

a. Bakelite b. PVC c. Melamine d. Teflon

36. What is the composition of soap?

a. Sodium salt with fatty acids

b. Potassium salt with fatty acids

c. Both a and b

d. Sodium and potassium salt mixed with chemicals

37. Formula of blue vitriol

a. CuSO4 .5H2O b. FeSO4.5H2O c. MgSO4 .7H2O d. ZnSO4.7H2O

38. Electronic configuration of an element X having atomic number 24 is

a. [Ar]3d54s1 b. [Ar] 3d44s2 c. [Ne]2p53s1 d. [Ar]3d64s2

39. S-2 Is iso electronic with

a. Ar b. Cl- c. HS- d. Ti+3

40. Gelena [PbS] on heating in limited supply of air gives lead metal. This is known as

a. Smelting b. Calcination c. Self reduction d. Sulphatizing roasting

41. If be the roots of the equation p(x2 + n2) + pnx + qn2x2 = 0 then the value of p (2 + 2)+ p+ q22 is

a. + b. 0 c. p + q d. + + p + q

42. If the first term of a G.P. be 5 and common ratio be – 5, then which term is 3125 –

a. 6th b. 5th c. 7th d. 8th

43. Fourth term in the expansion of 10

b93

a

is-

a. 40 a7 b3 b. 40a3b7 c. 1890 a6b4 d. 1890a4b6

Pratibha Praveena Page 6

44. Second term in the expansion of (2x + 3y)5 will be -

a. 46 x2y3 b. 30 x3y2 c. 240 x4 y d. 810 xy4

45. The 5th term of the expansion of (x – 2)8 is -

a. 8C5x3( –2)5 b. 8C5x3 25 c. 8C4x4 (–2)4 d. 8C6x2 (–2)6

46. The number of ways in which 3 persons can occupy 6 rooms separately is-

a. 2 b. 20 c. 120 d. 216

47. Find the total number of ways of answering 5 objective type questions, each question having 4 choices.

a. 46 b. 54 c. 63 d. 45

48. A = {a, e, i, o, u} and B = {i, o} then the true statement is-

a. A B b. B A c. A B d. A is equivalent B

49. Let n (U) = 700, n(A) = 200, n(B) = 300 and n(A B) = 100, then n(Ac Bc) is -

a. 400 b. 600 c. 300 d. 200

50. The mean of discrete observations y1, y2,....yn is given by-

a. n

yn

1ii

b.

n

1i

n

1ii

i

y

c. n

fyn

1iii

d.

n

1ii

n

1iii

f

fy

51. If A – B =4

, then (1 + tan A) (1 – tan B) =

a. 1 b. 2 c. – 1 d. – 2

52. If the length of the shadow of a vertical pole on the horizontal ground is equal to its height, find the angle of

elevation of the sun -

a. 60º b. 30º c. 45º d. 90º

53. The angle of elevation of the top of a tower from a point 20 m away from its base is 45º. The height of the

tower is -

a. 10 m b. 20 m c. 49 m d. 320 m

54. A person walking along a straight road observes that a two points 1 km apart, the angles of elevation of a pole

in front of him are 30º and 75º. The height of the pole is,

a. 250 )13( m b. 250 )13( m c. 225 )12( m d. 225 )12( m

55. If P, Q, R are collinear points such that P(7, 7), Q(3, 4) and PR = 10, then R is -

a. (1, 1) b. (1, –1) c. (–1, 1) d. (–1, –1)

56. The ratio in which the point (8, 4) divides the line segment joining the points (5, –2) and (9, 6) is -

a. 2 : 1 b. 3 : 1 c. 2 : 3 d. 1 : 2

Pratibha Praveena Page 7

57. The ratio in which x-axis divides the join of the points (2, –3) and (5, 6) is -

a. 2 : – 1 b. 1 : 2 c. 2 : 1 d. None of these

58. A coin is tossed three times. The probability that in the second toss head does not occur, is-

a. 1 b. 1/2 c. 1/3 d. 1/4

59. The probability of coming up an even (odd) number in the throw of a die is-

a. 1/6 b. 1/2 c. 1/3 d. 2/3

60. If p and q are simple statement, then p q is false when-

a. p is true and q is true

b. p is false and q is true

c. p is true and q is false

d. both p and q are false

61. Which of the following is the equation of a circle?

a. x2 + 2y2 – x + 6 = 0

b. x2 – y2 + x + y + 1 = 0

c. x2 + y2 + xy + 1 = 0

d. 3(x2 + y2) + 5x + 1 = 0

62. If and are the root of ax2 + bx + c = 0, then the value of

ba

1

ba

1 is-

a. bc

a b.

ca

b c.

ab

c

d. None of these

63. The coefficient of x5 in the expansion of (2 + 3x)12 is-

a. 12C525, 37 b. 12C62

6.36 c. 12C527.35 d. None of these

64. Two finite sets have m and n elements respectively. The total number of subsets of first set is 56 more than the

total number of subsets of the second set. The values of m and n respectively are -

a. 7,6 b. 6,3 c. 5,1 d. 8,7

65. If for three disjoint sets A, B, C; n(A) = 10, n(B) = 6 and n(C) = 5, then n(A B C) is equal to-

a. 21 b. 11 c. 1 d. 9

66. If 5 tan = 4, then

cos2sin

cos3sin5=

a. 5/9 b. 14/5 c. 9/5 d. 5/14

67. If a matrix B is obtained by multiplying each element of a matrix A of order 2 × 2 by 3, then relation between A and B

is-

a. A = 3B b. 3A = B c. 9A = B d. A = 9B

68. Which of the following is a statement-

a. May you live long!

b. May God bless you!

c. The sun is a star

d. Hurrah! we have won the match

69. A matrix A = (aij) m x n is said to be a square matrix if-

a. m = n b. m n c. m n d. m < n

Pratibha Praveena Page 8

70. A factory employs 100 workers of whom 60 work in the first shift and 40 work in the second shift. The average

wage of all the 100 workers is Rs.38. If the average wage of 60 workers of the first shift is Rs.40, then the

average wage of the remaining 40 workers of the second shift is-

a. 35 b. 40 c. 45 d. None of these

71. The rate of photosynthesis is maximum in -

a. Blue light b. Green light c. Far red light d. Red light

72. Main function of lenticel is

a. Transpiration b. Gaseous exchange c. Guttation d. Bleeding

73. A lake with nutrients is called

a. Trophic b. Euphotic c. Oligo throphic d. Eutrophic

74. Suspensory ligaments is found in

a. Brain b. Heart c. Lungs d. Eye

75. Mendelian ratio 9 : 3 : 3 : 1 is due to

a. Law of segregation

b. Law of purity of gametes

c. Law of independent assortment

d. Law of unit characters

76. Ptylin is another name of

a. Chymotrypsin b. Pepsin c. Salivary amylase d. Renin

77. Which of the following is excreted in human urine?

a. Ammonia b. Urea c. Uric acid d. Amino acid

78. A person with blood group AB has which of the following antigen in his RBC’s

a. A b. B c. AB d. None of these

79. Saliva cannot reach the tooth surface to neutralize the bacterial acids because tooth surface is covered by

a. Plaque b. Enamel c. Dentine d. Bone

80. The function of kidney is

a. Excretion b. Osmoregulation c. Oxygenation d. a and b

81. Orinthine cycle operates in

a. Kidney b. Liver c. Heart d. Muscles

82. Filtration of the blood takes place at

a. PCT b. DCT c. Collecting ducts d. Malphigian body

83. Which part of human brain is largest?

a. Cerebellum b. Thalamus c. Cerebrum d. Medulla

84. Mark the vitamin present in Rhodopsin

a. Vit A b. Vit B c. Vit C d. Vit D

Pratibha Praveena Page 9

Best of Luck

85. Size of the pupil is controlled by the

a. Ciliary muscles b. Suspensory ligaments c. Cornea d. Iris muscles

86. Disease caused by hyposecretion of thyroxine is

a. Goitre b. Critinism c. Axomegaly d. Addison’s disease

87. The functional unit of testis is

a. Seminiferous tubules b. Epididymis c. Prostate gland d. Sertoli cells

88. Chordae tendinae are found in

a. Atria of heart b. Ventricles of heart c. Joints of Legs d. Joints of hands

89. Light reaction in photosynthesis occurs in

a. Stroma b. Lamella c. Grana d. Outer membrane

90. What is large unit of land having different communities called

a. Biome b. Ecosystem c. Niche d. Biosphere