MEDIUM
10th CBSE
IMPORTANT
Earn 100

What happens when a piece of aluminium metal is added to dilute hydrochloric acid? Write chemical equations involved.

Important Questions on Chemical Reactions and Equations

MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 1 - Chemical Reactions and Equations>Test Your Knowledge>Q 23
State one example of a reaction characterized by change in state.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 1 - Chemical Reactions and Equations>Test Your Knowledge>Q 23
State one example a reaction characterized by evolution of gas.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 1 - Chemical Reactions and Equations>Test Your Knowledge>Q 23
State one example of a reaction characterised by change in temperature.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 1 - Chemical Reactions and Equations>Test Your Knowledge>Q 24
Write balanced chemical equations for the following reaction.
Hydrogen sulphide gas burns in air to give water and sulphur dioxide.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 1 - Chemical Reactions and Equations>Test Your Knowledge>Q 24

Write balanced chemical equation for the following reaction.

Sodium hydroxide solution is heated with granulated zinc.

MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 1 - Chemical Reactions and Equations>Test Your Knowledge>Q 25
“Oxidation and reduction processes occur simultaneously”. Justify the statement with the help of an example.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 1 - Chemical Reactions and Equations>Test Your Knowledge>Q 26
Design an activity to show a decomposition reaction in which light is used to decompose a reactant.
MEDIUM
10th CBSE
IMPORTANT
SUPER SIMPLIFIED SCIENCE CHEMISTRY CLASS X>Chapter 1 - Chemical Reactions and Equations>Test Your Knowledge>Q 27

You are given the following materials:

(i) Marble chips (ii) Dilute hydrochloric acid (iii) Zinc granules.

Identify the type of reaction when marble chips and zinc granules are added separately to acid taken in two tubes. Write chemical equations in each case.