Identify the correct Statements.Alkanes with odd no of carbons have high melting points than alkanes with even No. of carbons.Alkanes with even No, of carbons have higher melting point than next higher and lower alkanes with odd No. of carbon atoms.Grignard reagents react with compounds having acidic hydrogen and give alkanes.The minimum No. of carbons in alkanes required to show optical isomerism is 7.Alkanes and cyclo alkanes can exhibit geometrical isomerismBoiling point of alkanes will increase with increase of carbon atoms

Incorrect. Alkanes with an even number of carbon atoms have higher melting points than alkanes with an odd number of carbon atoms. This is because even-numbered alkanes can pack together more efficiently in a crystal lattice, leading to stronger intermolecular forces and higher melting points.

Correct. Alkanes with an even number of carbon atoms do have higher melting points than the next higher and lower alkanes with an odd number of carbon atoms for the same reasons mentioned above.

Correct. Grignard reagents do react with compounds having acidic hydrogen to produce alkanes. This is a common method for synthesizing alkanes in the laboratory.

Incorrect. The minimum number of carbon atoms in alkanes required to show optical isomerism is 4, not 7. A carbon atom must be bonded to four different groups in order to be a chiral center and exhibit optical isomerism.

Incorrect. Alkanes and cycloalkanes cannot exhibit geometrical isomerism. Geometrical isomerism requires the presence of a double bond, which alkanes and cycloalkanes do not have.

Correct. The boiling point of alkanes does increase with the increase of carbon atoms. This is because larger molecules have stronger intermolecular forces, leading to higher boiling points.