Assertion : Acetylene is linear.
Reason : Carbons of acetylene are sp hybridised.

Convert : Carbon to acetylene

Assertion : Acetylene is more acidic than ethylene. Reason : Acetylene has sp character of carbon and, therefore, more s-character.

Assertion : Carbocation are planar in nature. Reason : Carbocations are sp^(2) hybridised.

Assertion : Carbocation are planar in nature. Reason : Carbocations are sp^(2) hybridised.

Assertion :-The acetylene molecule is linear in shape. Reason :- The hybrid state of both the carbon atoms in acetylene is sp^2 .

Assertion (A) : CO_2 is linear Reason (R) : C is not in sp- hybridised state .

Assertion (A) : H_2O is a linear molecule. Reason (R) : Oxygen is sp^3 hybridised.

Assertion (A) : H_2O is a linear molecule. Reason (R) : Oxygen is sp^3 hybridised.