Write the balanced chemical equation for the following chemical reaction:

Sodium + Water $\to$ Sodium hydroxide + Hydrogen

Important Questions on Chemical Reactions and Equations

HARD

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 1 - Chemical Reactions and Equations>QUESTIONS>Q 3

Write the balanced chemical equation with state symbols for the following reaction:
Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.

MEDIUM

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 1 - Chemical Reactions and Equations>QUESTIONS>Q 3

Write the balanced chemical equation with state symbols for the following reaction:
Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.

HARD

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 1 - Chemical Reactions and Equations>QUESTIONS>Q 1

A solution of a substance ‘X’ is used for whitewashing.
(i) Name the substance ‘X’ and write its formula.
(ii) Write the reaction of the substance ‘X’ named in (i) above with water

HARD

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 1 - Chemical Reactions and Equations>QUESTIONS>Q 2

Why is the amount of a gas collected in one of the test tubes in ‘Electrolysis of water’ activity double of the amount collected in the other? Name this gas.

MEDIUM

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 1 - Chemical Reactions and Equations>QUESTIONS>Q 1

Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

MEDIUM

10th Mizoram Board

IMPORTANT

SCIENCE TEXTBOOK FOR CLASS X>Chapter 1 - Chemical Reactions and Equations>QUESTIONS>Q 2

Give an example of a double displacement reaction?

HARD

10th Mizoram Board