MEDIUM
12th Maharashtra Board
IMPORTANT
Earn 100

Oxygen has less negative electron gain enthalpy than sulphur. Why?

Important Questions on Elements of Groups 16,17,and 18

MEDIUM
12th Maharashtra Board
IMPORTANT
The first member of a group usually differs in properties from the rest of the members of the group. Why?
MEDIUM
12th Maharashtra Board
IMPORTANT

Which of the following possess hydrogen bonding? 

H2S, H2O, H2Se, H2Te

HARD
12th Maharashtra Board
IMPORTANT
Show hydrogen bonding in H2O molecule with the help of a diagram.
HARD
12th Maharashtra Board
IMPORTANT
The first member of a group usually differs in properties from the rest of the members of the group. Why ?
MEDIUM
12th Maharashtra Board
IMPORTANT
What is allotropy?
HARD
12th Maharashtra Board
IMPORTANT
What is the difference between allotropy and polymorphism?
MEDIUM
12th Maharashtra Board
IMPORTANT
Why water in the fish pot needs to be changed time to time?
MEDIUM
12th Maharashtra Board
IMPORTANT
Ozone is used as bleaching agent. Explain.