CBSE Class 12 Chemistry The d-and f-Block Elements Quiz 3

1. PCl on hydrolysis gives

A HPO B HPO C HPO D POCl

2. How many P-O-P bonds appear in cyclic meta-phosphoric acid?

A 4 B 3 C 2 D 1

3. Which of the following is a tetrabasic acid?

A Hypophosphorus acid B Metaphosphoric acid C Pyrophosphoric acid D Orthophosphoric acid

4. Which of the following is not correctly matched?

A Acidic oxides-PONO, CLO B Basic oxides-NaOm, CaO, MgO C Neutral oxides-CO, CO, BeO D Amphoteric oxides-ZnO, SnO,AlO

5. Sulphur molecule is

A diatomic B triatamic C tetratomic D Octa-atomic