MEDIUM
Stage 1 & 2
IMPORTANT
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Silver chloride turns grey in sunlight because of its decomposition into

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Important Questions on Chemical Reactions and Equations

EASY
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 1
The substance that takes part in a chemical reaction is known as
EASY
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 2
In the chemical reaction iron powder + sulphur →______, the product formed in the reaction is:
EASY
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 3
A chemical change is generally
EASY
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 4
If the number of atoms of each element is equal on both sides of the equation then the equation is known as
EASY
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 6
The colour of copper oxide is
MEDIUM
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 7
In exothermic reaction, heat is
MEDIUM
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 8
The precipitate formed when copper sulphate reacts with hydrogen sulphide
EASY
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 9
Carbon burns with oxygen to form