In this post I provided some more Bihar polytechnic previous year question which is very helpful for you.To practice on these questions you can improve the preparation of your exam.
Physics
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Explanation : Use the formula Q=It.
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Explanation : Resistance of voltmeter is very high, therefore if we connect voltmeter in series order then value of current is zero.
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Explanation : 1 light year=9.461×10¹⁵meters.
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Explanation : Molecular weight of NaOH is 40.
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Explanation : 2(CaSO₄.2H₂O)⇒2CaSO₄.H₂O+3H₂O.
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Explanation : Formula of urea is NH₂CONH₂.
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Explanation : Use the formula a³-b³=(a-b)(a²+ab+b²).
Explanation : Use the formula a²+b²=(a+b)²-2ab.
Explanation : no.
1. Frequency of a sound wave is 1000Hz and wavelength is 34cm .How much time will it take to travel 1km?
Explanation : no.
2. What is the effective voltage if two bulbs of 60W and 40W are connected in parallel sequence?
Explanation : no.
3. Three resistance of 2 ohm are arranged on a triangle,What is the resistance between any two top?
Explanation : no.
4. Total internal reflection of light is possible when light passes through
Explanation : no.
5. A convex lens which focus distance is 5cm.Its power is-
Explanation : no.
6. Which of the following is related to Fleming's left hand rule?
Explanation : no.
7. Milky way is discovered by
Explanation : no.
8. Which mirror always forms virtual image?
Explanation : no.
9. If 360 Coulomb's charge flows till 2 minutes then what will value of electric current?
Explanation : Use the formula Q=It.
10. Resistance of any wire does not depend upon
Explanation : no.
11. Rocket works on the principal of
Explanation : no.
12. A wire of resistance 36 ohm is cut into 'n' uniform parts and connect into parallel order,now effective resistance is 1 value of 'n' is-
Explanation : no.
13. How many numbers of electrons in 1 Coulomb charge?
Explanation : no.
14. Which mirror is used in side mirror of vehicles?
Explanation : no.
15. What is the full form of LASER?
Explanation : no.
16. A bullet of mass 20g is fired with a velocity of 400m/s from a gun of mass 8kg.What is the rocoil velocity of gun?
Explanation : no.
17. What is the relations between momentum and force?
Explanation : no.
18. What will value of current when voltmeter is connected in series order?
Explanation : Resistance of voltmeter is very high, therefore if we connect voltmeter in series order then value of current is zero.
19. Which of the following wavelength will be least?
Explanation : no.
20. Temperature of two material is 327°C and 127°C.What is the ratio in rate of thermal radiation which is radiated from that material?
Explanation : no.
21. 1HP is equal to-
Explanation :no.
22. Light year is the unit of-
Explanation : 1 light year=9.461×10¹⁵meters.
23. Which of the following quantities is scaler quantity?
Explanation : no.
24. When a moving bus stops suddenly the passengers are pushed-
Explanation : no.
25. Rainbow is formed due to
Explanation : no.
26. Minimum possible temperature is
Explanation : no.
27. What are the major carriers in n type semiconductor?
Explanation : no.
28. What is the value of 97°F in Kelvin?
Explanation : no.
29. If a glass prism is immersed into water then its dispersive power will
Explanation : no.
30. What is the value of gravitational acceleration on the height of 12800KM from the surface of earth?
Explanation : no.
Chemistry
31. Vinegar is the dilute solution of-
Explanation : no.
32. Baeyer's reagent is-
Explanation : no.
33. What is the monomer of natural rubber?
Explanation : no.
34. Which of the isoelectronic of C atom?
Explanation : no.
35. What will be normality of 4% NaOH solution?
Explanation : Molecular weight of NaOH is 40.
36. Which of the following element is least reactive?
Explanation : no.
37. Limonite is the ore of
Explanation : no.
38. Which of the following oxide reacts with dilute acids and gives H₂O₂?
Explanation : no.
39. What will be numbers of water molecules in 0.12g H₂O?
Explanation : no.
40. What is the percentage of nitrogen in atmosphere?
Explanation : no.
41. Which is made plaster of Paris after heating?
Explanation : 2(CaSO₄.2H₂O)⇒2CaSO₄.H₂O+3H₂O.
42. Which acid is called king of acids?
Explanation : no.
43. Which of the following is more reactive halogen?
Explanation : no.
44. What is the functional group of carboxylic acid?
Explanation : no.
45. Which of the following is redox reaction?
Explanation : no.
46. What is the general formula of alkene?
Explanation : no.
47. Which of the following is good conductor of electricity?
Explanation : no.
48. What is the chemical name of heavy water?
Explanation : no.
49. Solder is alloy of-
Explanation : no.
50. Concentration of sulphide ore is done by
Explanation : no.
51. What is the formula of blue vitriol?
Explanation : no.
52. Catalyst which is used in hydrogenation of oil is-
Explanation : no.
53. What is the number of α and β particles which is emitted in nuclear reaction ₉₀Th²³⁸⇒₈₃Bi²¹²
Explanation : no.
54. What is formed after heating the mixture of sodium acetate and sodalime?
Explanation : no.
55. Hydrogen bomb is based on the principle of
Explanation : no.
56. Which gas is formed when water reacts with calcium carbide?
Explanation : no.
57. Which non-matel is in liquid form at room temperature?
Explanation : no.
58. Which of the following is detergent?
Explanation : no.
59. What is the percentage of nitrogen in urea?
Explanation : Formula of urea is NH₂CONH₂.
60. What is the ratio of molecules which is present in 10g H₂O and 5g CO₂?
Explanation : no.
> Also read Bihar polytechnic previous year question (Set 1)
Mathematics
61. In a parallelogram ABCD,If AB=2x+5,CD=y+1,AD=y+5 and BC=3x-4,then ratio of AB:BC is-
Explanation : no.
62. What is mode of 9,10,6,9,6,7,9,9,10,8,10?
Explanation : no.
63. What is the volume of a cylinder which height is 6.5cm and full surface area is 220cm²?
Explanation : no
64. P(4,6) divided a line which is connecting A(-2,3) and B(6,7) in ratio of-
Explanation : no.
65. What is the probability of having at least one boy in a family of three children?
Explanation : no.
66. Which of the following is a factor of (a²-b²)(c²-f²)-4abcd?
Explanation : no.
67. The average temperature of Tuesday, Wednesday and Thursday was 42°C.The average temperature of Wednesday, Thursday and Friday was 47°C.If Tuesday's temperature was 33°C,then what was Friday's temperature?
Explanation : no.
68. A mixture of 40 liters of milk and water contains 10% water.How much water should be added so that the water is 20% in the new mixture?
Explanation : no.
69. If x=rsinαcosβ,y=rsinαsinβ and z=rcosα,then the value of (x²+y²) is-
Explanation : no.
70. Radius of the wheels of a bicycle is 14cm.How much distance will travel by bicycle when wheels complete 50 revolution?
Explanation : no.
71. sin(60°+θ)-cos(30°+θ)=
Explanation : no.
72. Area of a square is equal to area of a rectangle.If length of rectangle is 16m and width is 9m,then what will be perimeter of square?
Explanation : no.
73. What is the greatest number of four digit which is divisible by 4,5,6,7 and 9?
Explanation : no.
74. If (2x-y)²+(3y-z)²=0,then x:y:z is-
Explanation : no.
75. 2Ë£⁺⁶=8Ë£⁺¹,then what will be value of x?
Explanation : no.
76. Sohan sold a watch at a lose of 5%.If he had sold that watch for rs.27 more,he would have gained 7%.Find the cost price of watch?
Explanation : no.
77. What is time taken by 110m long train to cross a 70m long platform with a speed of 36km/h?
Explanation : no.
78. [(secA+tanA)(1-sinA)]=
Explanation : no.
79. If each side of a square is increased by 10% then find the percentage increasement in the area?
Explanation : no.
80. Which of the following quadratic equation which sum of roots is -2 and product is -4?
Explanation : no.
81. A number is increased by 10% and then decreased by 10%,then the number decreased by
Explanation : no.
82. If sum of two positive numbers is 25 and product is 144,then difference of that numbers is
Explanation : no.
83. log₂a=4-log₂4,then the value of a is
Explanation : no.
84. If a side of a cubic tank is 23cm,then volume is
Explanation : no.
85. Two points (-3,2) and (-4,-3) are at the same distance from (-1,y).The value of y is
Explanation : no.
86. Before five years the age of A is three times of age of B and after ten years age of A is two times of age of B.What is the present age of A and B?
Explanation : no.
87. Length of a rectangle is x, width is y and perimeter is p.If x=2y then which of the following statement is correct?
Explanation : no.
88. Which of the following is factor of 27x³-64?
Explanation : Use the formula a³-b³=(a-b)(a²+ab+b²).
89. If m+n=4,mn=2 then what will be value of m²+n²?
Explanation : Use the formula a²+b²=(a+b)²-2ab.
90. tan315°sec900°+cot(-495°)×cosec(-450°) is equal to
Explanation : no.
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