61. Currency coins are alloys of different metals. One metal that is present in all coins is
| Answer : Option D |
| Explanation : |
64. The total number of stars in the universe is believed to be
| Answer : Option D |
| Explanation : |
65. The most important cardiac stimulant is
| Answer : Option C |
| Explanation : |
66. The most abundant carbohydrate present in blood is
| Answer : Option D |
| Explanation : |
67. Which of the following waves are diffracted by an obstacle of size 1 cm?
| Answer : Option A |
| Explanation : |
69. In old age stiffness of joints is due to the
| Answer : Option B |
| Explanation : |
70. The release of the egg/ovum from the ovary is called
| Answer : Option B |
| Explanation : |
71. Impulses from the pace–maker cause the
| Answer : Option C |
| Explanation : |
73. The materials used in the manufacture of glass are
1.sand (silica)
2.soda ash (sodium carbonate)
3.common salt (sodium chloride)
4.lime stone (calcium carbonate) Select the correct answer by using the code below,
| Answer : Option B |
| Explanation : |
74. Chlorine is not used in the preparation of
| Answer : Option C |
| Explanation : |
75. Some of the leading coffee-producing states in our country are Tamilnadu, Kerala, Karnataka and Orissa. Select the states from the following in correct sequence according to their production.
| Answer : Option A |
| Explanation : |
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