English Medium कक्षा ९ - CBSE Question Bank Solutions for Science

How would you separate a mixture of sugar and salt?

How will you separate a mixture of sodium chloride and sand ?

How will you separate a mixture of iron fillings and sulphur powder without using carbon disulphide ?

A mixture contains water, kerosene and sand. How will you separate this mixture ?

You are given a mixture of water, groundnut oil and common salt. How will you separate groundnut oil and common salt from it ?

Discuss the method of separating a mixture containing chalk powder, iron filings and naphthalene.

How will you separate common salt, sand and iron filings from their mixture ?

How will you separate a mixture of kerosene oil and water ? Explain with the help of a labelled diagram.

How will you separate a mixture of cooking oil (groundnut oil) and water ?

How will you separate a mixture of mercury, oil and water ?

Which of the following can be separated by using a separating funnel and which cannot be separated by using a separating funnel ?

1. water and kerosene mixture
2. water and acetone mixture

Give reasons for your answer.

Derive the relation between commercial unit of energy (kWh) and SI unit of energy (joule).

A certain household consumes 650 units of electricity in a month. How much is this electricity in joules?

Define the Weather.

What is climate?

A mixture of milk and groundnut oil can be separated by :

The chemical which can be used to separate a mixture of carbon powder and sulphur powder successfully is :

Explain natural and human-made sources of air pollution.

Briefly explain main layers of the atmosphere.

What are the effects of air pollution on human beings?