51. If θ is positive acute angle and $$4sin^{2}$$θ = 3, then the value of tan θ - cot θ/2 is
52. The chord AB of a circle of centre O subtends an angle θ with the tangent at A to the circle. Then measure of∠ABO is
53. From a point on a bridge across the river, the angles of depression of the banks on opposite sides of the river are 30° and 45° respectively. If the bridge is at a height of 2.5m from the banks, then the width of the river is (take √3 = 1.732)
54.
The pie-chart given below show usage of materials in a construction of a house. Study the chart and answers the questions :The percentage of steel used in the construction of a house
55. The ratio of cement and bricks used in the construction is
56. If the cost of cement is ₹ 5000/- then the labour cost is
57. The average of percentages of steel, cement and miscellaneous items used in the construction is
58. Which of the following green house gases has the greatest heat-trapping ability?
59. Which State of India is leading in solar energy generation ?
60. Ganga is a result of confluence of rivers Bhagirathi and Alakananda at which place ?
61. What are Aldehydes ?
62. Which circuit is used to store one bit of data ?
63. Why is weightlessness experienced while orbiting the earth in space ships ?
64. Which is the largest gland in human body?
65. Who was the President of Indian National Congress at the time of Indian independence ?
66. What is the minimum age for membership to Rajya Sabha ?
67. What is an octroi ?
68. Sextant is an instrument used in which of the following ?
69. What is Gol Gumbadh ?
70. Where is a transistor most likely to be found ?
71. Which organ of human body secretes Insulin?
72. If a healthy freshwater fish is placed in salt water, what will be the expected consequence ?
73. Which country is known as 'Land of Midnight Sun'?
74. Which river basin is shared by more than 10 States of India ?
75. Who among the following was the first grammarian of the Sanskrit language?
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The percentage of steel used in the construction of a house
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