EASY
10th CBSE
IMPORTANT
Earn 100

Why should the magnesium ribbon be cleaned before burning in air?

Important Questions on Chemical Reactions and Equations

EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 2 Chemistry>Chapter 1 - Chemical Reactions and Equations>Very Short Answer Type Questions>Q 5
A chemical equation can be balanced easily by altering the formula of a reactant or product.
MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 2 Chemistry>Chapter 1 - Chemical Reactions and Equations>Very Short Answer Type Questions>Q 6
What is wrong with the following chemical equation?
Mg+O⟶MgO
Correct and balance it.
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 2 Chemistry>Chapter 1 - Chemical Reactions and Equations>Very Short Answer Type Questions>Q 7
What does the symbol (aq) represent in a chemical equation?
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 2 Chemistry>Chapter 1 - Chemical Reactions and Equations>Very Short Answer Type Questions>Q 8
Why is photosynthesis considered an endothermic reaction?
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 2 Chemistry>Chapter 1 - Chemical Reactions and Equations>Very Short Answer Type Questions>Q 9
How will you indicate the following effect in a chemical equation?
 A solution made in water
 
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 2 Chemistry>Chapter 1 - Chemical Reactions and Equations>Very Short Answer Type Questions>Q 9

How will you indicate the following effect in a chemical equation?

Exothermic reaction

EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 2 Chemistry>Chapter 1 - Chemical Reactions and Equations>Very Short Answer Type Questions>Q 9

How will you indicate the following effect in a chemical equation?

Endothermic reaction

MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 2 Chemistry>Chapter 1 - Chemical Reactions and Equations>Very Short Answer Type Questions>Q 10
Translate the following statement into chemical equations and then balance the equation:
Hydrogen sulphide gas burns in air to give water and sulphur dioxide.