EASY
10th CBSE
IMPORTANT
Earn 100

Define a precipitate.

Important Questions on Chemical Reactions and Equations

EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 2
What are the ways of forming the precipitate?
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 3
Give an example of a precipitate reaction.
EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 4
What happens when zinc granules react with dilute sulphuric acid?
HARD
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>PAPER - PEN TEST : 2>Q 5
Differentiate exothermic and endothermic reactions with an example for each.
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.