Question

The following questions consist of two statements-Assertion(A) and Reason(R).Answer the
questions selecting the appropriate option below:
a) Both A and R are true and R is the correct explanation for A
b) Both A and R are true and R is not the correct explanation for A
c) A is true but R is false
d) A is false but R is true
i) Assertion: Pollination is the transfer of pollen grains to the anther.
Reason: Pollination is carried out by wind, birds and insects.
ii) Assertion: Contraception is used to avoid unnecessary pregnancies
Reason: Contraception is used by both males and females.
iii) Assertion: When air is passed through lime water, lime water turns milky.
Reason: Air contains 78% nitrogen and 21% oxygen

Answer 1

Answer:

a) For pollination both are true

b) For contraceptive device. Assertion is true

But Reason! is wrong ( IUD,SAHELI ect. are used by

women to prevent unnecessary pregnancy!)

c) For Limewater! Reason is true because limewater is Calcium hydroxide when air is passed it turn it milky!

Reason is fasle because air contain Co2 which react with Calcium hydroxide ! To give milky white