HARD
JEE Main
IMPORTANT
Earn 100

Explain the following:
Ozone destroys mercury meniscus.

Important Questions on p-Block Group 16 (The Oxygen Family)

MEDIUM
JEE Main
IMPORTANT
Gaseous oxygen is colourless, liquid oxygen is pale blue and solid O2 is blue, explain why?
MEDIUM
JEE Main
IMPORTANT
When O2 is cooled below a reaction temperature, its paramagnetic character decreases, why?
MEDIUM
JEE Main
IMPORTANT
Which of the following does not react with oxygen directly? (Zn, Ti, Pt, Fe)
MEDIUM
JEE Main
IMPORTANT

Which of the following is responsible to turn the starch-iodide paper blue when it is brought in contact with O3?