MEDIUM
JEE Advanced
IMPORTANT
Earn 100

Why is NF3 stable while NCl3 and NI3 are explosive?

Important Questions on The Group 15 Elements

MEDIUM
JEE Advanced
IMPORTANT
Give a preparation of NH2OH and describe one of its major uses.
EASY
JEE Advanced
IMPORTANT
What are the main ingredients in fertilizers? How are they made, and what use do the plants make of them?
MEDIUM
JEE Advanced
IMPORTANT
Compare the oxides of nitrogen and phosphorus.
HARD
JEE Advanced
IMPORTANT
Substance (A) is a gas of vapour density 8.5. On oxidation at high temperature with a platinum catalyst, it gave a colourless gas (B) which rapidly turned brown in air, forming a gas (C). (B) and (C) were condensed together to give substance (D), which reacted with water, forming an acid (E). On treatment of (E) with an acidified solution of KI, gas (B) was evolved, but when (E) was treated with a solution of NH4Cl, a stable colourless gas (F) was evolved. (F) did not support combustion, but magnesium continued to burn in it. However, (F) reacted with calcium carbide in an electric furnace, forming a solid (G), which was slowly hydrolysed by water, forming a solution of substance (A), which turned Nessler's reagent yellow. Identify substances (A) to (G) and explain the reactions involved.
HARD
JEE Advanced
IMPORTANT
Compare the structures of the oxides and sulphides of phosphorus.
HARD
JEE Advanced
IMPORTANT

Give equation for the reaction of the following compound with water:

P4O6.

HARD
JEE Advanced
IMPORTANT
Give equations for the reaction of the following compounds with water: P4O10.
HARD
JEE Advanced
IMPORTANT
Give equations for the reactions of the following compound with water: PCl3.