Among the following compounds identify the compound that has all three bonds (ionic, covalent and coordinate bond).

1. Ammonia
2. Ammonium chloride
3. Sodium hydroxide
4. Calcium chloride

Identify the statement that is incorrect about alkanes.

1. They are hydrocarbons.
2. There is a single covalent bond between carbon and carbon.
3. They can undergo both substitution as well as addition reactions.
4. On complete combustion they produce carbon dioxide and water.

Which of these will act as a non-electrolyte?

1. Liquid carbon tetrachloride
2. Acetic acid
3. Sodium hydroxide aqueous solution acid
4. Potassium chloride aqueous solution.

Which one of the following will not produce an acid when made to react with water?

1. Carbon monoxide
2. Carbon dioxide
3. Nitrogen dioxide
4. Sulphur trioxide