MEDIUM
7th ICSE
IMPORTANT
Earn 100

Tin in stannous oxide has a valency of 2.

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Important Questions on Test Paper 2

MEDIUM
7th ICSE
IMPORTANT
There are 15 non-metals in the periodic table.
MEDIUM
7th ICSE
IMPORTANT
Carbon dioxide dissolves in sulphuric acid to form carbonic acid.
MEDIUM
7th ICSE
IMPORTANT
Define intermolecular space.
MEDIUM
7th ICSE
IMPORTANT
Define viscosity.
MEDIUM
7th ICSE
IMPORTANT
Define atom.
MEDIUM
7th ICSE
IMPORTANT
Define molecule.
EASY
7th ICSE
IMPORTANT
Define exothermic reaction.
MEDIUM
7th ICSE
IMPORTANT
Define valency.