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Chemical Reactions and Equations
Chemical Reactions and Equations - 31 Oct 2026
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General
✓
✗
Which of the following is an incorrect formula?
General
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✗
Which of these will cause a chemical change to occur?
Grinding of wheat into flour
Lighting of a gas stove
Evaporation of water from a lake
Ringing of an electric bell
General
✓
✗
Rancidity is caused due to
Oxidation of fats
Reduction of oils
Oxidation of proteins
Oxidation of carbohydrates
General
✓
✗
From the given list, the nitrate which gives a metal,
and
on heating is_____
General
✓
✗
In the given equation, which substance is getting reduced?
SO
2
H
2
S
H
2
O
S
General
✓
✗
The removal of oxygen from a substance is called
Oxidation
Corrosion
Reduction
Rancidity
General
✓
✗
A precipitate formed in a reaction is shown by
downward arrow
upward arrow
sideways arrow
none of the above
General
✓
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All decomposition reactions are
endothermic
substitution reaction
exothermic
none of these
General
✓
✗
Rancidity can be prevented by
adding Butylated Hydroxianisole
Flushing with Oxygen gas
Keeping at warmer temperature
All of these
General
✓
✗
In a chemical equation substances written on the left hand side are
reactants
products
conditions necessary for the reaction
not fixed
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and 
on heating is_____
