The species that does not contain peroxide ions is:

1. PbO₂

2. H₂O₂

3. SrO₂

4. BaO₂

By heating which of the following, would NO₂ be produced?

1. NaNO₃

2. AgNO₃

3. NH₄NO₃

4. NH₄NO₂

Oxidation of nitrogen among the following reactions is indicated by -
1. \(\mathrm{N}_2 \rightarrow 2 \mathrm{NH}_3 \)
2. \(\mathrm{N}_2 \mathrm{O}_4 \rightarrow 2 \mathrm{NO}_2 \)
3. \(\mathrm{NO}_3{ }^{-} \rightarrow \mathrm{N}_2 \mathrm{O}_5 \)
4. \(\mathrm{NO}_2^{-} \rightarrow \mathrm{NO}_3^{-}\)

Which of the following has been arranged in order of decreasing bond dissociation energy:

1. P-O>Cl-O>S-O

2. P-O>S-O>Cl-O

3. S-O>Cl-O>P-O

4. Cl-O>S-O>P-O

Which set of oxide of nitrogen is paramagnetic in nature?

(1) NO, N₂O

(2) NO₂, NO, N₂O

(3) NO,NO₂

(4) N₂O,NO₂

Compound among the following with an S-S bond is :

1. H₂S₂O₇

2. H₂SO₅

3. H₂S₂O₈

4. H₂S₂O₆

The bleaching action of SO₂ is due to its

1. Acidic property

2. Basic property

3. Reducing property

4. Oxidising property

Which is not hydrolysed with water?

(1) PCl₃

(2) NF₃

(3) NCl₃

(4) BCl₃

Ammonia on reaction with excess of chlorine gives

1. NCl₃ and HCl

2. N₂ and NH₄Cl

3. NCl₃ and NH₄Cl

4. N₂ and HCl

The product obtained as a result of a reaction of nitrogen with CaC₂ is:

1. CaCN         

2. CaCN₃

3. Ca₂CN       

4. CaCN₂