P-Block Element...

Which of the following sets represents orthosilicates only?

Which of the following statements are FALSE?

P. The boiling point of PH₃ is lower than that of NH₃.

Q. Red phosphorus is more reactive than white phosphorus.

R. Phosphorus is sp³ hybridised in PCl₃.

S. In the solid state, PCl₅ exists as a covalent solid.

Which of the following statements are TRUE?

1. H₂S is more acidic than H₂Te.

2. Ozone is thermodynamically more stable than oxygen.

3. The two oxygen-oxygen bond lengths in the ozone molecule are identical.

4. Rhombic sulphur is the stable form of sulphur at room temperature.

Which of the following statements are FALSE regarding ozone?

1. Ozone is less stable than dioxygen. 

2. Ozone is paramagnetic.

3. Ozone is violet-black in solid state.

4. Ozone molecule is linear.

Upon hydrolysis, S₂Cl₂ slowly forms HCl, SO₂ and 'X'. Which of the following is 'X'?

Which of the following is the correct statement?

Consider the following statements regarding Helium:

(i) It is used in gas cooled nuclear reactors.

(ii) It is used to produce and sustain powerful conducting magnets.

(iii) It is used as a cryogenic agent for carrying out experiment at low temperatures.

The correct order of initials T (true) and F (false) for the above statements is: