Among the 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

State which is not a typical property of an ionic compound?

1. High melting point.
2. Conducts electricity in molten and in the aqueous solution state.
3. Are insoluble in water.
4. Exist as oppositely charged ions even in the solid state.

Compound 'X' consists of only molecules. 'X' will have —

1. A Crystalline hard structure
2. A low melting and boiling point
3. An ionic bond
4. A strong force of attraction between it's molecules.

The molecule which contains a triple covalent bond is:

1. ammonia
2. methane
3. water
4. nitrogen