The product formed at the cathode in electroplating of an article with Silver is:

1. Hydrogen gas
2. Silver ions
3. Silver atoms
4. Oxygen gas

Ionisation potential is maximum in:

1. Alkaline earth metals
2. Halogens
3. Inert gases
4. Alkali metals

A triple covalent bond is present in:

1. Methane
2. Ammonia
3. Nitrogen
4. Chlorine

Assertion (A): Acetic acid has four hydrogen atoms in its molecule but its basicity is one.

Reason (R): Acetic acid has only one replaceable hydrogen atom.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.