MEDIUM
9th ICSE
IMPORTANT
Earn 100

Give an example of a hygroscopic solid substance.

Important Questions on Specimen Paper 2 (Unsolved) Paper 2 (Chemistry)

EASY
9th ICSE
IMPORTANT
Give one example: A gaseous substance which act as an oxidising as well as a reducing agent.
EASY
9th ICSE
IMPORTANT

Give reason: 

Hydrogen is collected by downword displacement of water.

EASY
9th ICSE
IMPORTANT

Give reason:

Hydrogen is not prepared by conc. sulphuric acid.