EASY
10th CBSE
IMPORTANT
Earn 100

State one characteristic of the chemical reaction which takes place when lemon juice is added gradually to potassium permanganate solution

Important Questions on Chemical Reactions and Equations
EASY
10th CBSE
IMPORTANT
State one characteristic of the chemical reaction which takes place when dilute sulphuric acid is added to barium chloride solution.

EASY
10th CBSE
IMPORTANT
State one characteristic of the chemical reaction which takes place when quicklime is treated with water.

EASY
10th CBSE
IMPORTANT
State one characteristic of the chemical reaction which takes place when wax is burned in the form of a candle.

MEDIUM
10th CBSE
IMPORTANT
What do you understand by exothermic and endothermic reactions?

EASY
10th CBSE
IMPORTANT
Give one example of an exothermic reaction and one of an endothermic reaction.

EASY
10th CBSE
IMPORTANT
Which of the following are endothermic reactions and which are exothermic reactions?
(i) Burning of natural gas
(ii) Photosynthesis
(iii) Electrolysis of water
(iv) Respiration
(v) Decomposition of calcium carbonate

EASY
10th CBSE
IMPORTANT
One of the following does not happen during a chemical reaction. This is:

EASY
10th CBSE
IMPORTANT
Which of the following does not involve a chemical reaction?
