7. Which among the following is an unsaturated molecule that has the molecular formula ofa cycloalkane.a) C3H6 b)C8H18 c) C3H4 d) C5H12

The unsaturated molecule among the given options is C3H4.

Here's why:

Unsaturated molecules contain double or triple bonds. Cycloalkanes are saturated hydrocarbons, meaning they only contain single bonds.

The general formula for cycloalkanes is CnH2n.

a) C3H6: This could be a cycloalkane (cyclopropane) or an alkene (propene), but it's not unsaturated. b) C8H18: This is an alkane (octane), not a cycloalkane or an unsaturated molecule. c) C3H4: This is an alkyne (propyne), which is an unsaturated molecule. It can't be a cycloalkane because it doesn't fit the general formula (CnH2n). d) C5H12: This is an alkane (pentane), not a cycloalkane or an unsaturated molecule.

So, the answer is c) C3H4.