Bihar polytechnic previous year question (Set 1) - Gk question and answer

## Sunday, September 27, 2020

In this post I provided a previous year question paper of Bihar Polytechnic entrance exam.If you are preparing for this entrance exam and want to qualify in it then practice on the following questions carefully. Bihar polytechnic previous year question Set 1

Physics

1. When the water freezes then distance between their molecules is

Explanation : no.

2. A horse pull any car 10 meters through the force of 40N.The total work done by the horse is-

Explanation : no

3. The maximum pressure in a bottle filled with water is-

Explanation : no.

4. The time period of hour needle in a watch is-

Explanation : no.

5. Which of the following is vector quantity?

Explanation : no.

6. The flow of heat in two substance depends upon-

Explanation : Heat always flow from high temperature to low temperature.

7. When any object covers the same distance in same time period,Then their motion is-

Explanation : no.

8. If any plane mirror turned from 10° then reflected beam turned-

Explanation : no.

9. There is a object Infront of a convex lens and 9cm away from their focus.Real,inverse and big image make 16cm away from focus,Then the focus length will be-

Explanation : Use the lens formula .

10. Which current is always used in homes?

Explanation : no.

11. In domestic electric circuit all devices work on 220 volt.What does this mean?

Explanation : no.

12. When in electric circuit two bulbs of 100 watt and 40 watt connects in series order then which bulb will more shine?

Explanation : no.

13. The value of magnetic induction under any selenoid is-

Explanation : no.

14. Mass of a object is 50Kg,Then their weight is-

Explanation : Use the formula W=mg.

15. The railway track is made up of-

Explanation : no.

16. Which type of energy stored in spring scales?

Explanation : no.

17. An object is moving from rest by the acceleration of 2m/s².What is the distance covered by object in 5 sec?

Explanation : Use the formula ut+½at² where,u=initial velocity,t=time and a=acceleration.

18. The velocity of two objects of equal mass are V and 3V respectively, Then what will ratio of their kinetic energy?

Explanation : no.

19. At which temperature the value of centigrade and Fahrenheit is equal?

Explanation : no.

20. How much energy consumed by a 20 watt bulb in 20 hours?

Explanation : no.

21. What is the value of latent heat of melt of ice?

Explanation : no.

22. Light wave is-

Explanation : no.

23. Escape velocity of any object from the earth-

Explanation : no.

24. Electron volt is the unit of

Explanation : no.

25. '1 Newton' is equal to

Explanation : no.

26. In any conductor flow of electric current means

Explanation : no.

27. The value of time period of a sound wave is 0.001. calculate the frequency of sound.

Explanation : no.

28. In which medium speed of sound is maximum?

Explanation : no.

29. Sound energy is converted into electrical energy by

Explanation : no.

30. Weight of an object is 50N on the earth.At which place their weight is zero?

Explanation : no.

Chemistry

31. In 2FeCl₂+Cl₂, Cl₂ is-

Explanation : no.

32. If specific heat of any material is 0.1 and equivalent weight is 32.28,Then atomic weight of that material is-

Explanation : no.

33. Which of the following statement is incorrect?

Explanation : no.

34. In nuclear reactor control rods are made up of-

Explanation : no.

35. Who was the father of modern chemistry?

Explanation : no.

36. In pressure cooker cooking process is done quickly because-

Explanation : In pressure cooker water is heat on high temperature therefore boiling point of water is increased and cooking process is done quickly.

37. The percentage of water in blue stone (CuSO₄.5H₂O) is-

Explanation : Atomic weight of Cu=63.5,S=32,O=16,H=1.

38. Aqueous solution of FeCl₃ is-

Explanation : no.

39. What will form at the anode in the electrolysis of an aqueous solution of sodium chloride?

Explanation : Because anode have positive charge so negative charge (Cl⁻) is attract on anode.

40. The rate of diffusion of hydrogen is five times from rate of diffusion of another gas X.What is the atomic weight of X?

Explanation : no.

41. When we go from left to right in a periodic table then-

Explanation : no.

42. Rolled gold is-

Explanation : no.

43. Formula of Washing soda is-

Explanation : no.

44. Which of the following is natural silk?

Explanation : no.

45. Which oil is used in froth flotation method?

Explanation : no.

46. What is the I.U.P.A.C name of CHCl₃?

Explanation : The common name of trichloromethane is chloroform.

47. Nitrogen reacts with magnesium and formed

Explanation : 3Mg+N₂→Mg₃N₂.

48. Which of the following is weak acid?

Explanation : no.

49. How many numbers of electrons in outermost shell of halogen?

Explanation : no.

50. What is the basis of rationalization of elements in modern periodic table?

Explanation : Modern periodic table was developed by Mendeleev.

51. Volume of any gas is 300ml at 27°C.If temperature of that gas is increased 127°C at constant pressure then what will volume of gas?

Explanation : no.

52. Electronic configuration of an element is 2,8,2.This element is-

Explanation : That metal is magnesium.

53. Atomic weight of sodium is 23 and atomic number is 11.What will numbers of electrons, neutrons and protons continuously?

Explanation : no.

54. How many numbers of atoms in one mole silver?

Explanation : no.

55. Which compound of nitrogen is used as fertilizer?

Explanation : no.

56. Which of the following is hydrocarbon?

Explanation : no.

57. What will pH value of basic solution?

Explanation : no.

58. Which of the following is alloy of aluminium?

Explanation : no.

59. What is the formula of Chloroform?

Explanation : no.

60. If Ph value of any solution is 8 then that solution is

Explanation : no.

MATHEMATICS

61. Before 5 years age of A is five times of age of B and after 10 years age of A will two times of B, What is the present age of A and B?

Explanation : no.

62. Price of 4 chairs and 7 tables is 3600 rupees and price of 6 chairs and 10 tables is 5200 rupees,then what will price of one chair and one table?

Explanation : no.

63. The sum of squares of two consecutive even numbers is 244.That two numbers are-

Explanation : no

64. If a³=117+b³ and a=3+b,then the value of a+b is

Explanation : no.

65. The factor of 4x⁸+16x⁴y⁴+25y⁸ are-

Explanation : no.

66. If x-y=1 and x²+y²=41 then the value of x+y is-

Explanation : no.

67. If angles of a cyclic quadrilateral are A,B,C and D,then the value of cosA+cosB+cosC+cosD is

Explanation : no.

68. If radius of base and height of a vertical cone is increased 20%,then what will percentage growth in volume of cone?

Explanation : no.

69. If curve surface area of cylindrical column is 20m² and volume is 924m³.What will ratio of its diameter and height?

Explanation : no.

70. If root of any quadratic equation is 4 and 5,then equation will-

Explanation : no.

71. If 3ˣ⁻²ⁿ=27,7³ˣ⁺ⁿ=1/49,then-

Explanation : no.

72. If any quantity is doubled in four years from rate of compound interest.For same rate that quantity will sixteen times in-

Explanation : no.

73. In an equilateral triangle ABC, side AB is median of AB,then CD² is equal to

Explanation : no.

74. What is the ratio of volume of a sphere which radius is 5cm and 7cm?

Explanation : no.

75. The diameter of a wheel is 4m then how far distance will cover by wheel in 400 revolution?

Explanation : no.

76. If side of any square is increased by four times then what will ratio of area of resultant square and given square?

Explanation : no.

77. Area of equilateral triangle is equal to

Explanation : no.

78. What will value of sin42º.cos48º+cos42º.sin48º?

Explanation : no.

79. The value of cos⁴θ-sin⁴θ is equal to

Explanation : no.

80. If tanΘ=12/5,then value of sinθ is equal to

Explanation : no.

81. Which of the following is incorrect?

Explanation : no.

28. Sum of two numbers is 8 and different is 4,then one number is-

Explanation : no.

83. Which of the following graph is parallel to X-axis?

Explanation : no.

84. If h(x)=x²-2,x∈R then which of the following statement is incorrect

Explanation : no.

85. X={1,2,3,4},Y={1,6,7,8} then what will value of X∩Y?

Explanation : no.

86. (a+b)c=ac+bc, which of the following rule is used in above equation?

Explanation : no.

87. If a+b=6 and ab=5,then what will value of a-b?

Explanation : Use the formula (a-b)²=(a+b)²-4ab.

88. What is the class mark of 50-56?

Explanation : no.

89. log125+log8=x.

Explanation : no.

90. If two angle of any triangle is 50° and 60° then that triangle is-