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61. Brilliance of diamond is due to
(a) interference of light
(b) diffraction of light
(c) polarization of light
(d) total internal reflection of light
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62. Which of the following conditions is/are essential for wheat cultivation ?
1. Optimum temperature during growing period is around 30°C
2. A frost-free period of about 100 days
3. Light clay or heavy loam soil
Select the correct answer using the code given below :
(a) 1, 2 and 3
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1 only
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63. Gwadar port is located in
(a) Pakistan
(b) Iran
(c) India
(d) Sri Lanka
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64. North-west part of the Indian peninsula was converted into a great centre of vulcanicity in
(a) the end of Cretaceous period
(b) the mid of Cretaceous period
(c) the start of Cretaceous period
(d) the whole of Cretaceous period
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65. What is the natural number n for which 39 + 312 + 315 + 3n is a perfect cube of an integer ?
(a) 10
(b) 11
(c) 13
(d) 14
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66. Which one of the following is known as Wood Spirit ?
(a) Methanol
(b) Ethanol
(c) Formaldehyde
(d) Acetaldehyde
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67. Which one of the following will NOT show Tyndall effect ?
(a) Chalk powder freshly mixed with water
(b) Lime juice
(c) Few drops of milk mixed with water
(d) Starch solution
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68. Which of the following are the most favourable conditions for liquefying a gas?
(a) Low pressure and high temperature
(b) Low pressure and low temperature
(c) High pressure and high temperature
(d) High pressure and low temperature
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69. Aluminium, Iron, Copper and Zinc are extracted from
(a) Bauxite, Magnetite, Malachite and Calamine respectively
(b) Magnetite, Bauxite, Malachite and Calamine respectively
(c) Calamine, Malachite, Magnetite and Bauxite respectively
(d) Malachite, Magnetite, Bauxite and Calamine respectively
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70. Which one of the following does NOT contain COOH group ?
(a) Citric acid
(b) Lactic acid
(c) Tartaric acid
(d) Ascorbic acid
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71. The Soda-acid fire extinguisher con tains
(a) sulphuric acid and solution of sodium hydrogencarbonate
(b) nitric acid and solution of sodium hydrogencarbonate
(c) sulphuric acid and solution of sodium carbonate
(d) sulphuric acid and solution of potassium carbonate
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72. Who among the following was NOT associated with the Kakori Conspiracy Case ?
(a) Ramprasad Bismil
(b) Rajendra Lahiri
(c) Ashfaqulla Khan
(d) Surya Sen
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73. Which of the following statements about Bhagat Singh is/are NOT true ?
1. Bhagat Singh was influenced by socialist ideas
2. He was a member of the Hindustan Socialist Republican Association
3. Bhagat Singh threw a bomb in the Central Legislative Assembly in 1929 with the objective to kill as many people as possible
Select the correct answer using the code given below :
(a) 1 and 3
(b) 2 and 3
(c) 2 only
(d) 3 only
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74. Which of the following statements about Ishwarchandra Vidyasagar is/are NOT correct ?
1. Vidyasagar’s writings significantly helped to develop the Bengali language
2. He received the title ‘Vidyasagar’ from Presidency College, Kolkata
3. He was enthusiastic about the spread of women’s education
4. Vidyasagar defended widow marriage without being convinced about scriptural support
Select the correct answer using the code given below :
(a) 2 and 4
(b) 1 and 2
(c) 4 only
(d) 3
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75. Which among the following statements about the Jallianwala bagh massacre is/are correct ?
1. In Jallianwala bagh troops opened fire upon an unarmed crowd
2. The troops were under the command of General Dyer
3. The troops did not issue any warning to the people before opening fire
Select the correct answer using the code given below :
(a) 1 only
(b) 1 and 2 only
(c) 1, 2 and 3
(d) 2 and 3 only
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76. If a circle and a square have the same perimeter, then
(a) their areas are equal
(b) the area of the circle is greater than the area of the square
(c) the area of the square is greater than the area of circle
(d) the area of the circle is two times the area of the square
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77. Let x2 + y2 = 1;
u2 + v2 = 1 and
xu + yv=0, then
1. x2 + u2 = 1
2. y2 + v2 = 1
3. xy + uv = 0
Which of the above is/are true ?
(a) 3 only
(b) 1 and 2 only
(c) 1, 2 and 3
(d) 2 and 3 only
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78. If the first day of the year (other than the leap year) was Sunday, then which was the last day of that year?
(a) Monday
(b) Sunday
(c) Saturday
(d) None of these
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79. A walks 10 metres in front and 10 metres to the right. Then every time turning to his left he walks 5, 15 and 15 metres respectively. How far is he now from his starting point ?
(a) 55 metres
(b) 23 metres
(c) 5 metres
(d) None of these
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80. Which of the following is NOT provided for under the Directive Principles of State Policy ?
(a) Right to work, to education and to public assistance in certain cases
(b) Uniform Civil Code for the citizens
(c) Separation of Judiciary from executive
(d) Participation of workers in the management of local-self government
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