MEDIUM
11th Assam Board
IMPORTANT
Earn 100

If BCl bond has a dipole moment, explain why BCl3 molecule has zero dipole moment.

Important Questions on The p-Block Elements

MEDIUM
11th Assam Board
IMPORTANT
Aluminium trifluoride is insoluble in anhydrous HF but dissolves on addition of NaF. Aluminium trifluoride precipitates out of the resulting solution when gaseous BF3 is bubbled through. Give reasons.
HARD
11th Assam Board
IMPORTANT

Suggest a reason as to why CO is poisonous.

EASY
11th Assam Board
IMPORTANT
How is excessive content of CO2 responsible for global warming?
MEDIUM
11th Assam Board
IMPORTANT

Explain the structures of diborane and boric acid.

EASY
11th Assam Board
IMPORTANT
What happens when borax is heated strongly?
 
EASY
11th Assam Board
IMPORTANT
What happens when boric acid is added to water?
EASY
11th Assam Board
IMPORTANT
What happens when aluminium is treated with dilute NaOH?
EASY
11th Assam Board
IMPORTANT
What happens when BF3 is reacted with ammonia?