EASY
NDA & NA EE
IMPORTANT
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Ammonia NH3 obtained from different sources always has same proportion by mass of nitrogen and hydrogen. It proves the validity the law of:

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Important Questions on Atoms and Molecules

MEDIUM
NDA & NA EE
IMPORTANT
The law of conservation of mass is not correct for:
MEDIUM
NDA & NA EE
IMPORTANT
Chemical equation is balanced, according to the law of:
MEDIUM
NDA & NA EE
IMPORTANT
Hydrogen, sulphur and oxygen gives H2S, SO2 and H2O. This is according to the law of
MEDIUM
NDA & NA EE
IMPORTANT
The reaction between iron and copper sulphate solution represents which type of reaction?