Question

Q. (26) Given below are two statements labelled as Assertion (A) and Reason (R)

Assertion(A)- Chemical formula of calcium oxide is Cao.
Reason (R) - In the above valency of calcium is one.
Select the most appropriate answer from the option given below:
a) Both A and R are true and R is the correct explanation of A
b) Both A and Rare true and R is not correct explanation of A
c) A is true but R is false.
d) A is false but R is true​

Answer 1

Answer:

c) A is true but R is false

The valency of Ca in CaO is 2 not 1

$Ca^{+2}O^{-2}$

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Answer 2

Answer:

A is true but R is false

Explanation:

The valency of Ca in CaO is 2 not 1

Ca^{+2}O^{-2}Ca

+2

O

−2