HARD
10th CBSE
IMPORTANT
Earn 100

What are exothermic and endothermic reactions? Give one example of each. 

Important Questions on Chemical Reactions and Equations

MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 1 - Chemical Reactions and Equations>Practice Questions Set>Q 9
Is the decomposition of vegetable matter into compost an endothermic reaction?
MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 1 - Chemical Reactions and Equations>Practice Questions Set>Q 10

Classify the burning of LPG is an endothermic and exothermic reaction.

MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 1 - Chemical Reactions and Equations>Practice Questions Set>Q 10

Classify the following as endothermic and exothermic reaction.

Electrolysis of water.

MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 1 - Chemical Reactions and Equations>Practice Questions Set>Q 10

Classify the following as endothermic and exothermic reaction.

 Photosynthesis by plants.

MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 1 - Chemical Reactions and Equations>Practice Questions Set>Q 10

Classify the following as endothermic and exothermic reaction.

 Decomposition of calcium carbonate.

HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 1 - Chemical Reactions and Equations>Practice Questions Set>Q 11
List any four changes around us through which we can determine whether a chemical reaction has occurred or not. 
MEDIUM
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 1 - Chemical Reactions and Equations>Practice Questions Set>Q 12

What happens when (write chemical equations also) magnesium ribbon is burnt in air?

HARD
10th CBSE
IMPORTANT
New Millenium Science - Chemistry Class X>Chapter 1 - Chemical Reactions and Equations>Practice Questions Set>Q 12

What happens when (write chemical equations also) zinc granules are added to hydrochloric acid.