Name of the Organisation : Margdarshan
Exam : Hindustan Margdarshan Scholarship Test 2018
Class : 12th Engineering
Document Type : Sample Question Paper
Website : online.margdarshaniitjee.com
Download Sample Question Paper : https://www.pdfquestion.in/uploads/24486-XIIEngg.pdf
Hindustan Margdarshan Scholarship Test Sample Paper
** Download Sample Paper For 2018 Class 12th Engineering Above PDF link
** Please read the instructions carefully.
Related : Hindustan Margdarshan Scholarship Test Class XI Medical Sample Paper 2018 : www.pdfquestion.in/24481.html
** You are allotted 5 minutes specifically for this purpose.
** You are not allowed to leave the examination hall before the end of the test.
Instructions
[A] General :
1. Attempt ALL the questions. Answer have to be marked on the OMR sheets
2. This question paper contains 180 questions.
3. The question paper consists of THREE Parts Physics, Chemistry & Mathematics
4. Blank spaces are provided at the bottom of each page for rough work. No additional sheets will be provided for rough work.
5. Blank paper, clipboard, log tabes, silde rules, calculators, cellular phones, pagers and electronic gadgets in any form are NOT allowed.
6. Do not Tamper / multilate the OMR sheet or this booklet.
7. Do not break the seals of the question-paper booklet before instructed to do so by the invigilator.
8. SUBMIT the OMR sheet to the invigilator after completing the test & take away the test paper with you.
[b] Filling of OMR Sheet :
9. In all the parts, each question will have 4 choices out of which only one choice is correct
10. Use only Black/Blue ball point pen for filling the OMR sheet.
11. On the OMR sheet, darken the appropriate bubble for each character of your name, Registration No., Phone No. etc.
[C] Marking Scheme :
12. For each right answer you will be awarded 4 marks if you darken the bubble corresponding to the corrrect answer and zero marks if no bubble is darkened. In case of bubbling of incorrect answer, minus one (-1) mark will be awarded.
Class 12th Engineering Sample Question
** Class 12th (Apearing), [Engg.]
Physics
1. A boy stands straight infront of a mirror at a distance of 30 cm away from it. He sees his erect image whose height is1/5th of his real height. The mirror he is using is :–
(A) plane mirror
(B) convex mirror
(C) concave mirror
(D) convex lens
2. A concave mirror is used to form an image of the sun on a white screen. If the lower half of the mirror were covered with an opaque card, the effect on the image on the screen would be-
(A) Negligible
(B) To make the image less bright than before
(C) To make the upper half of the image disappear
(D) To make the lower half of the image disappear
3. An object placed 10 cm in front of a lens has an image 20 cm behind the lens. What is the power of the lens (in dioptre) ?
(A) 1.5
(B) 3.0
(C) – 5.0
(D) +15.0
4. A convex lens of focal length 20 cm is cut into two equal parts so as to obtain two parts so as to obtain two plano-convex lenses as shown in figure. The two parts are then put in contact as shown in figure. What is the focal length of the combination ?
(A) zero
(B) 5 cm
(C) 10 cm
(D) 20 cm
5. A convex lens of focal length 40 cm, a concave lens of focal length 40 cm and a concave lens of focal length 15 cm are placed in contact. The power of this combination is :-
(A) + 1.5 D
(B) – 1.5 D
(C) + 6.67 D
(D) – 6.67 D
7. Two charged metal spheres of radii R and 2R are temporarily placed in contact and then separated. Which of the following has the greater value at surface for smaller sphere :-
(a) Charge
(b) Charge density
(c) Potential
(d) Electric field
(A) b, d
(B) a,b,d
(C) b, c, d
(D) Only b
8. A square surface of side L meter in the plane of the paper is placed in a uniform electric field E (volt/m) acting along the same plane at an angle ? with the horizontal side of the square as shown in figure. The electric flux linked to the surface, in units of volt–m, is
(A) Zero
(B) EL2
(C) EL2 cos
(D) EL2 sin
12. Three capacitors each of capacitance C and of breakdown voltage V are joined in series. The capacitance and breakdown voltage of the combination will be :-
(A) 3C, 3V
(B) C/3,V/3
(C) 3C,V/3
(D) C/3, 3V
13. In the circuit shown in the figure, the switch S is initially open and the capacitor is initially uncharged. I1, I2 and I3 represent the current in the resistance 2 ? , 4 ? and 8 ? respectively
(A) just after the switch S is closed, I1 = 3A, I2 = 3A and I3 = 0
(B) just after the switch S is closed, I1 =3A, I2 = 0 and I3 = 0
(C) long time after the switch S is closed, I1 = 0.6A, I2 = 0 and I3 = 0
(D) long time after the switch S is closed, I1 = I2 = I3 = 0.6A.
Chemistry
31. For the first order reaction, half life is 14 sec. The time required for the initial concentration to reduce to 1/ 8th of its value is
(A) 28 s
(B) 42 s
(C) (14)2 s
(D) 14 s
32. The rate constant for the reaction 5 1 2 5 2 2 2N O ???4NO ? O is 2 ?10? sec? . If the rate is1.2?10?5mol lit?1 sec?1 , then concentration of N2O5 in mole L?1 is
(A) 1.4
(B) 1.2
(C) 0.04
(D) 0.6
33. In the first order reaction the concentration of the reactants is reduced to 25% in one hour. The half life period for the reaction
(A) 2 hrs
(B) 4 hrs
(C) 1/2 hrs
(D) 1/4 hrs
34. If the coordination no. of an element in its crystal lattice is 8, then packing is
(A) fcc
(B) hcp
(C) bcc
(D) none of the above
35. In a hexagonal closest packing in two layers one above the other, the coordination number of each sphere will be
(A) 4
(B) 6
(C) 8
(D) 9
36. The maximum proportion of available volume that can be filled by hard spheres in diamond is
(A) 0.52
(B) 0.34
(C) 0.32
(D) 0.68
37. The number of molecules in a unit cell of fluorite is
(A) 2
(B) 4
(C) 6
(D) 8
38. Silicon doped with arsenic is
(A) p – type Semiconductor
(B) n – type Semiconductor
(C) Like a metallic conductor
(D) an insulator
39. A solid has a structure in which W atoms are located at the corners of cubic lattice, O atoms at the centre of edges and Na atom at the centre of the cube. The formula of the compound is
(A) NaWO2
(B) NaWO3
(C) Na2WO3
(D) NaWO4
40. The rate of reaction A + B + C ?? products is given by rate = ? ?1/ 2 ? ?1/ 3 ? ? k A B C . The order of reaction is
(A) 1
(B) 3
(C) 5/6
(D) 11/6
Mathematics
61. A kite is 300 m high and there are 500 m of cord out. If the wind moves the kite horizontally at the rate of 5 km/hr. directly away from the person who is flying it, find the rate at which the cord is being paid?
(A) 4
(B) 8
(C) 3
(D) cannot be determined
62. If f(x) = a ?n |x| + bx2 + x has its extremum values at x = – 1 and x = 2, then
(A) a = 2, b = – 1
(B) a = 2, b = – 1/2
(C) a = – 2, b = 1/2
(D) none of these
63. The greatest, the least values of the function, f(x) = 2?? 1?2x?x2 , x ? [??2??1] are respectively
(A) 2, 1
(B) 2, 1
(C) 2, 0
(D) –2, 3
65. STATEMENT-1 : If f(x) is increasing function with concavity upwards, then concavity of f– 1(x) is also upwards.
STATEMENT-2 : If f(x) is decreasing function with concavity upwards, then concavity of f–1(x) is also upwards.
(A) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
(B) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1
(C) Statement-1 is True, Statement-2 is False
(D) Statement-1 is False, Statement-2 is True
67. Number of tangents drawn from the point (–1/2, 0) to the curve y = e{x}. (Here { } denotes fractional part function).
(A) 2
(B) 1
(C) 3
(D) 4
68. On the curve x3 = 12y. The interval in which abscissa changes at a faster rate then its ordinate
(A) (–3, 0)
(B) (–?, –2) (2, 0)
(C) (–2, 2)
(D) (–3, 3)
Answer Key
Physics :
1. B 2. B 3. D 4. D 5. D 6. D 7. A
8. A 9. B 10. D 11. B 12. D 13. B 14. C
15. A 16. B 17. D 18. B 19. A 20. C 21. A
22. A 23. A 24. A 25. C 26. C 27. A 28. C 29. C 30. D
Chemistry :
31. B 32. D 33. C 34. C 35. D 36. B 37. B
38. B 39. B 40. D 41. B 42. C 43. A 44. C
45. B 46. B 47. A 48. C 49. D 50. B 51. C
52. A 53. A 54. C 55. D 56. D 57. C 58. A 59. C 60. A
Mathematics :
61. A 62. B 63. C 64. D 65. D 66. B 67. B
68. C 69. C 70. B 71. A 72. D 73. D 74. B
75. D 76. A 77. C 78. B 79. D 80. C 81. A
82. C 83. C 84. C 85. A 86. A 87. C 88. B 89. B 90. D