The number of C-H bonds in ethane molecule are:

1. Four
2. Six
3. Eight
4. Ten

Hydrocarbon which is a greenhouse gas is:

1. Butane
2. Ethylene
3. Ethane
4. Methane

The organic compound having a double carbon-carbon bond is :

1. C₄H₁₀
2. C₅H₁₀
3. C₃H₄
4. C₃H₈

An example of a cyclic organic compound is:

1. Propene
2. Pentene
3. Butene
4. Benzene