HARD
10th CBSE
IMPORTANT
Earn 100

Differentiate exothermic and endothermic reactions with an example for each.

Important Questions on Chemical Reactions and Equations

MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 6
How would you say that a chemical reaction has taken place? Give an example.
EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 7
What happens when a chemical reaction absorbs heat energy?
EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 8

Melting of ice is _____ reaction.

(Endothermic/ Exothermic)

MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 9
Is respiration an endothermic or exothermic reaction? Give reasons.
HARD
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 10
Give an example of chemical reaction that is characterized by a change in their physical state.
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 11
Give an example of chemical reaction that is characterized by change in colour.
HARD
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 12
What happens when sulphur dioxide gas is passed through the solution of acidified potassium dichromate?
EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 3>Q 1
Define a chemical equation.