Question

For question numbers 1,2,3 two statements are given.One labelled Assertion (A) and

the other labelled Reason (R).Select the correct answer to these questions from the

codes

a,b,c,& das given below.

a) Both A & R are true and R is the correct explanation of the Assertion

b)Both A & R are true and R is not the correct explanationoftheAssertion

c)A is true but R is false

d)A is false but R is true 1.Assertion: Red colour is seen to bendless while violet color bends more.

Reason: Different colour so flight bend through different angle with respect to the

incident ray as they pass through the prism.

2.Assertion: The chemical formula of bleaching powder is CaOC l2

Reason: Calcium Oxide reacts with Chlorine to form bleaching powder

3.Assertion: Accumulation of harmful chemical is maximumin case of organisms at

higher trophic level.

Reasons: Food chain normally do not go beyond 3 or 4 trophic level.​

Answer 1

1. Answer will be (c) Assertion is true and reason is false.

Reason : The violet colour bends more than red light it is not due to different colour it is actually due to the difference in wavelength, red colour has highest wavelength so it bends less.

2. Answer will be (c) Assertion is true and reason is false.

Reason : Bleaching powder (CaOCl2) is formed when chlorine reacts with calcium hydroxide.

3. Answer will be (b) both assertion and reason are true but reason is not the correct explanation of assertion.

Reason : Accumulation of harmful chemical is maximum in case of organisms at higher trophic level because of biomagnification (as we studied the example of DDT accumulation).