MEDIUM
7th ICSE
IMPORTANT
Earn 100
The black residue obtained on heating copper carbonate.
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Important Questions on Language of Chemistry
MEDIUM
7th ICSE
IMPORTANT
The basic gas obtained when two gases react in presence of a catalyst & the reaction is exothermic.
MEDIUM
7th ICSE
IMPORTANT
The gas obtained when potassium chlorate is heated in the presence of a catalyst.
MEDIUM
7th ICSE
IMPORTANT
The pale blue precipitate obtained when copper [II] sulphate reacts with sodium hydroxide is
[A: Hydrogen B: Copper [II] oxide C: Oxygen D: Copper (II) hydroxide E: Ammonia]
MEDIUM
7th ICSE
IMPORTANT
The gas which reacts with oxygen to give a neutral liquid.
MEDIUM
7th ICSE
IMPORTANT
Give a word equation for the following reaction:
Two solids combine on heating, to give a liquid.
MEDIUM
7th ICSE
IMPORTANT
Give a word equation for the following reaction:
Two gases which combine to give a solid.
MEDIUM
7th ICSE
IMPORTANT
Give a word equation for the following reaction:
A compound which on heating shows - colour change from brown to yellow.
MEDIUM
7th ICSE
IMPORTANT
Give a word equation for the following reaction:
A salt that reacts with ammonium hydroxide to give a reddish-brown precipitate.
