Q1. The property of carbon which is responsible for the formation of long chains is called:
A Catenation Correct
B Sublimation
C Carbonation
D Hydrogenation
Explanation
Carbon can form stable covalent bonds with other carbon atoms. This self-linking ability allows straight chains, branched chains and rings, and it is called catenation. Sublimation is a physical change in which a solid changes directly into vapour. Carbonation refers to the addition or presence of carbon dioxide, as in carbonated drinks or carbonate formation. Hydrogenation is the addition of hydrogen, commonly to unsaturated compounds. None of those processes explains why carbon forms long chains; the relevant property is catenation.