EASY
10th CBSE
IMPORTANT
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Rancidity is redox change.

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Important Questions on Chemical Reactions and Equations

MEDIUM
10th CBSE
IMPORTANT
Shining of fireflies in dark is due to oxidation of luciferin protein.
EASY
10th CBSE
IMPORTANT
Electrochemical reactions involve exchange of electrical energy.
EASY
10th CBSE
IMPORTANT
Photosynthesis is a photochemical reaction.
MEDIUM
10th CBSE
IMPORTANT
Electrical energy is absorbed in the reaction:
Zn+CuSO4ZnSO4+Cu
EASY
10th CBSE
IMPORTANT
The reaction of CO with O2 is combination reaction.
MEDIUM
10th CBSE
IMPORTANT
The reaction of sodium with H2O is a displacement reaction.
MEDIUM
10th CBSE
IMPORTANT
Mixing of aqueous solution of NaI and AgNO3 gives green precipitate.
EASY
10th CBSE
IMPORTANT
Thermal decomposition of CaCO3 in a closed vessel is reversible reaction.