EASY
10th CBSE
IMPORTANT
Earn 100

When iron is heated with sulphur, iron sulphide is formed. Name the reaction.

Important Questions on Chemical Reactions and Equations

EASY
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 2
Aluminium metal displaces iron from ferric oxide Fe2O3 giving aluminium oxide and iron.
Which is more reactive, aluminium or iron?
EASY
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 3
The taste and smell of the food changes when kept for long time in the open. What is it called?
EASY
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 4
What is general name of the chemicals which are added to fat and oil containing foods to prevent the development of rancidity?
MEDIUM
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 5
A solution of a substance X' is used for white washing.
Name the substance 'X' and write its formula.
Write the reaction of the substance 'X' named above with water.
EASY
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 6
Write the balanced chemical equation to represent the following statements:
Carbon (coke) burns in air to form carbon dioxide.
EASY
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 6
A piece of sodium metal on putting in water forms caustic soda and hydrogen gas. Explain.
MEDIUM
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 7

Identify the substances that are oxidized and the substances that are reduced in the following reaction
4Nas+O2g→2Na2Os

EASY
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 1 - Chemical Reactions and Equations>Summative Assessment>Q 7
Identify the substances that are oxidized and the substances that are reduced in the following reaction
CuOs+H2g→Cus+H2Ol