Bond Formation

Q.

Unsaturated hydrocarbons contain multiple bonds between the two C-atoms and show addition reactions. Give the test to distinguish ethane from ethene.

Q. The simplest unsaturated hydrocarbon contains ____ carbon atom(s) in it.

1. one
2. two
3. three
4. four

Q. Identify alkanes in the given options.

1. 

2. 

3. 

4. 

Q. A hydrogen molecule contains two hydrogen atoms in it.

1. False
2. True

Q. If $E_n$ is the energy required to remove the $n^{th}$ electron form the outer most shell of carbon then decreasing order of the energies is:

1. $E_4$
2. $E_3$
3. $E_2$
4. $E_1$

Q. The general formula for alkynes is:

1. ${\text{C}}_{\text{n}}{\text{H}}_{2\text{n}+2}$
2. ${\text{C}}_{\text{n}}{\text{H}}_{\text{n}}$
3. ${\text{C}}_{\text{n}}{\text{H}}_{2\text{n}-2}$
4. ${\text{C}}_{\text{n}}{\text{H}}_{2\text{n}}$

Q. The energy required to break all the bonds in ethene is ethyne.

1. More than
2. Less than
3. Equal to

Q. The number of electron pairs involved in the formation of a triple bond are ________.

1. three
2. six
3. two
4. four

Q.

Ethane, with the molecular formula ${\text{C}}_2{\text{H}}_6$, has ____ covalent bonds.

1. seven
2. six
3. eight
4. nine

Q.

Why does carbon form a large number of compounds?

1. Tetravalency

2. Multiple bonds formation

3. Strong ionic nature

4. Property of catenation