In which of the following, NH₃ is not used?

(a)

Nessler's reagent

(b)

Reagent for the analysis of IV group basic radical

(c)

Reagent for the analysis of III group basic radical

(d)

Tollen's reagent

P₄O₆ reacts with cold water to give _______.

(a)

H₃PO₃

(b)

H₄P₂O₇

(c)

HPO₃

(d)

H₃PO₄

The molarity of given orthophosphoric acid solution is 2M. Its normality is _______.

(a)

6N

(b)

4N

(c)

2N

(d)

none of these

The correct order of the thermal stability of hydrogen halide is_______.

(a)

HI > HBr > HCl > HF

(b)

HF > HCl > HBr > HI

(c)

HCl > HF > HBr > HI

(d)

HI > HCl > HF > HBr

Most easily liquefiable gas is _______.

(a)

Ar

(b)

Ne

(c)

He

(d)

Kr

What is inert pair effect?

Why fluorine is more reactive than other halogens?

What is the hybridisation of iodine in IF₇? Give its structure.

Give the balanced equation for the reaction between chlorine with cold NaOH and hot NaOH.

Give a reason to support that sulphuric acid is a dehydrating agent.

Give the uses of argon.

Give two equations to illustrate the chemical behaviour of phosphine.

What happens when PCl₅ is heated?