Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 25

HARD

11th CBSE

IMPORTANT

Earn 100

Give reason for the following : $H_{2} O$ has higher boiling point than $HF$ .

Important Questions on Chemical Bonding and Molecular Structure

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 25

Given reasons for Ice floats on the surface of water.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 25

Given reason: Ethyl alcohol has higher boiling point (

351 K

) than ethylamine (

290 K

).

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 25

Give reasons for the following:

{KHF}_{2}

exists but

{KHCl}_{2}

does not.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 25

Given reason for the following: Boiling point of

HCl

is less than

HF

as well as

HBr

.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>Competition Focus>Q 1

It is believed that atoms combine with each other such that outermost shell acquires stable configuration of

8

electrons. If stability were attained with

6

electrons rather than

8

, what would be the formula of the stable fluoride ion?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>Competition Focus>Q 2

In which of the following compounds does the central atom obey the octet rule?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>Competition Focus>Q 3

Based on lattice energy and other considerations, which one of the following alkali metal chlorides is expected to have the highest melting point?

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>Competition Focus>Q 4

Which of the following species contains three bond pairs and one lone pair around the central atom?