Question

Assertion (A): Naphthalene balls disappear with time without leaving any solid.
Reason (R): Solid converted to liquid is called sublimation.

a) 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.

Answer 1

Explanation:

a) Both A and R are true and R is the correct

explanation of A.

Answer 2

Answer:

$\fbox {c) A is true but R is false.}$

Explanation:

Assertion (A):

⇒ Naphthalene balls disappear with time without leaving any solid.

⇒ True √

Reason (R):

⇒ Solid converted to liquid is called sublimation.

⇒ False ×

⇒ Solid converted to liquid is called melting