Correct order of boiling point of group 16 hydrides

(1) H₂O<H₂S<H₂Se<H₂Te

(2) H₂Te<H₂Se<H₂S<H₂O

(3) H₂S<H₂Se<H₂Te<H₂O

(4) H₂O<H₂Te<H₂Se<H₂S

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

Which is correctly given according to other indicated?

1. F₂<Cl₂<Br₂<I₂ (oxidising Power)

2. HI>HBr>HCl>HF (Acidic strength)

3. Cl₂<Br₂<F₂<I₂ (Bond Energy)

4. HF< HI<HCl< HBr (Boiling point)​

Ammonia on reaction with excess of chlorine gives

1. NCl₃ and HCl

2. N₂ and NH₄Cl

3. NCl₃ and NH₄Cl

4. N₂ and HCl

Which set of oxide of nitrogen is paramagnetic in nature?

(1) NO, N₂O

(2) NO₂, NO, N₂O

(3) NO,NO₂

(4) N₂O,NO₂

Which of the following pairs of molecules have the almost identical bond dissociation energy?

1. F₂ and H₂

2. N₂ and CO

3. F₂ and I₂

4. HF and O₂

Hot concentrated sulphuric acid is a moderately strong oxidising agent. Which of the following reaction doe not show oxidising behaviour?

(a) Cu + 2H₂SO₄ $\to$CuSO₄ + SO₂ + 2H₂O

(b) 3S + 2H₂SO₄ $\to$3SO₂ + 2H₂O

(c) C + 2H₂SO₄ $\to$CO₂ + 2SO₂ + 2H₂O

(d) CaF₂ + H₂SO₄ $\to$CaSO₄ + 2HF

Among the following, which one is a wrong statement?

(1) PH₅ and BiCl₅ do not exist

(2) ρp-dp bonds are present in SO₂

(3) SeF₄ and CH₄ have same shape

(4) ${\mathrm{I}}_3^{+}$ has bent geometry