HALOGENS AND NOBEL GASES RT

is used in high speed photography

• He

• Kr

• Ne

• Xe

Halogens do not react directly with

• Carbon

• Boron

• Oxygen

• Both a and b

Solubility of noble gases down the group

• Increases

• Remains same

• Decreases

• None

In O3F2 the oxidation no of O is

• -2

• 2/3

• -1/2

• 1

Which one is strongest reducing agent

• HF

• HBR

• HCl

• HI

The fluorides of Sr are insoluble in water due to

• Low M. P.

• Low B. P

• High lattice energy

• All of the these

Oxidation state of is always - 1

• F

• Cl

• Br

• I

The half life of is 8.3hrs

• Cl

• Br

• I

• None

Which one is used for etching of glass.

• HBr

• HF

• HCI

• HI

Trichlorethene is widely used as dry-chleaing agent. With which it reacts to give a chiral product.

• H2

• Br2

• HCL

• NaOH(ag)