Day 57: CBSE Class 10 Science

1. A.
   Availability of water
2. B.
   Deficient food supply
3. C.
   Decrease in energy at higher levels
4. D.
   Pollution in air

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1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

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1. A.
   Vegetable peels, dead leaves, paper
2. B.
   Cow dung, leather bag, water
3. C.
   Polythene bag, rubber band, ball pen
4. D.
   Paper, fruits, bones

Tap an option to check your answer.

1. A.
   (i), (ii), (iii)
2. B.
   (iv)
3. C.
   (i) and (iii)
4. D.
   (ii) and (iv)

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