Chloride of an  element A gave a neutral solution in water. In the periodic table the element A belongs to

1. First group

2. Third group

3. Fifth group

4. Transitional metal

Which of the following is the correct statement?

1. F₂ has higher dissociation energy than Cl₂

2. F has higher electron affinity than Cl

3. HF is stronger acid than HCl

4. Boiling point increases down the group in halogens

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 of the following is not hydrolysed?

(1) CCl₄

(2) SiCl₄

(3) GeCl₄

(4) SnCl₄

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

AlF₃ is soluble in HF only in presence of KF. It is due to the formation of
(1) K₃[AIF₃H₃]

(2) K₃[AIF₆]

(3) AlH₃

(4) K[AIF₃H]

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

Which of the statements given below is incorrect?

1. Cl₂O₇ is an anhydride of perchloric acid

2. O₃ molecule is bent

3. ONF is isoelectronic with Anionic NO2

4. OF₂ is an oxide of fluorine

The variation of the boiling point of the hydrogen halides is in the order HF > HI > HBr >

HCl. What explains the higher boiling point of hydrogen fluoride?

1. The electronegativity of fluorine is much higher than for other elements in the group

2. There is strong hydrogen bonding between HF molecules

3. The bond energy ol HF molecules is greater than in other hydrogen halides

4. The effect of nuclear shielding is much reduced in fluorine which polarises the HF

molecule

When Cl₂ gas reacts with hot and concentrated sodium hydroxide solution, the oxidation

number of chlorine changes from

1. zero to +1 and zero to -5

2. zero to -1 and zero to +5

3. zero to -1 and zero to +3

4. zero to +1 and zero to -3