Question

) Both A and R are true and R is the correct explanation of A.

(b) Both A and R are true but R is not the correct

explanation of A.

(c) A is true but R is false.

(d) A is false but R is true.

14. Assertion(A): The chemical formula for hydrated

copper sulphate is CuSO4. 10H2O.

Reason(R): On strong heating, copper sulphate

loses its water of crystallisation and turns white.

15. Assertion(A): Plants can trap only 1% of the Sun’s

energy falling on them.

Reason(R): The energy available at each successive

trophic level is 10 per cent of the previous level.

Or

Assertion(A): If all producers are removed from a

food chain, then no other organism will be able to

exist.

Reason(R): All food chains begin with producers,

which are the original source of all food.

16. Assertion(A): In humans, males play an important

role in determining the sex of the child.

Reason(R): Males have two Y chromosomes​

Answer 1

Answer:

a is correct

Explanation:

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