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66. Which of the following laws is explained by the statement that matter can neither be created nor destroyed ?
A. Law of Conservation of Energy
B. Le Chateliers Principle
C. Law of Conservation of Mass
D. Law of Osmosis
Explanation:
67. The phylogeny of horse started with the fox sized animal having longer head, short legs, four toes on each front foot and three toes on each hind foot. This was named as
A. Equus
B. Merychippus
C. Pliohippus
D. Eohippus
Explanation:
68. Cooking is quicker in a pressure cooker because
A. of the penetrating action of steam
B. the whole of heat remains inside
C. it increases the temperature of the content
D. it increases boiling point of water
Explanation:
69. Which of the following minerals has the lowest numerical hardness value 1 ?
A. Talc
B. Gypsum
C. Apatite
D. Topaz
Explanation:
70. Which of the following is the correct sequence of evolution ? 1. Birds 2. Fish 3. Mammals 4. Frogs 5. Reptiles
A. 4, 1, 5, 2, 3
B. 2, 5, 4, 3, 1
C. 2, 4, 5, 1, 3
D. 1, 4, 5, 3, 2
Explanation:
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