The correct order of bond dissociation energy of halogens ${\text{F}}_2, {\mathrm{Cl}}_2, {\mathrm{Br}}_2 \mathrm{and} {\mathrm{I}}_2$ is-

1. F₂ < Cl₂ < Br₂ < I₂

2. I₂ > Br₂ > F₂ > Cl₂

3. Cl₂ > Br₂ < F₂ > I₂

4. I₂ < F₂ < Br₂ < Cl₂

The group which contains the strongest oxidizing agent is-

1. Group 15

2. Group 16

3. Group 17

4. Group 18

 Halogen that forms only one oxoacid is :

1. Chlorine

2. Fluorine

3. Bromine

4. Iodine

Arrange the following compounds in increasing order of their acidity:
HF, HCl, HBr, HI 

1. HCl < HBr < HI<HF  

2. HF < HCl < HI< HBr

3. HF < HCl < HBr < HI

4. HF< HBr < HI< HCl 

Fluorine forms only one oxoacid, HOF because of -

1. Low electronegativity and small size

2. High electronegativity and small size

3. High electronegativity and big size

4. Low electronegativity and big size

The uses of ${\mathrm{ClO}}_2$ is /are-

1. It is used for purifying water

2. It is used as a bleaching agent

3. Both '1'and '2'

4. None of the above

Halogens are colored because -

1. They absorb radiations in the U.V region

2. They absorb radiations in the visible region

3. They absorb radiations in the infrared region

4. They absorb radiations in the radiowaves region

 4HCl + O₂ →  X + 2H₂O

Cl₂ + H₂O → HCl  + Y ;

X and Y in the above reaction are respectively:

1.  Cl₂ , HOCl

2. HOCl ,Cl₂

3. HClO₃, HOCl

4. HOCl, HClO₄

A neutral molecule that is isoelectronic with ClO^- is -

1. ClF which is a Lewis base

2. ClF which is a Lewis acid

3. HCl which is a Lewis base

4. HCl which is a Lewis acid

The products formed by the reaction of F₂ and Cl₂ with water respectively are:

1. HF , HCl

2. H₂F₂ , HOCl

3. HF, HClO₃

4. H₂F₂, HClO₄