Is Matter Around Us Pure? Mock Tests

9 questions available

Is Matter Around Us Pure? Mock Test 1

Questions: 9

Sample Questions

Class 9 Science

Which of the following is a colloid?

A Salt solution

B Milk

C Sugar solution

D Win

Class 9 Science

When an iron nail is placed in copper sulfate solution, the color of the solution changes from blue to:

A Red

B Green

C Yellow

D Orange

Class 9 Science

When a reaction between barium chloride and sodium sulphate takes place, the white precipitate formed is:

A Barium sulphate

B Sodium chloride

C Barium chloride

D Sodium sulphate

Class 9 Science

The process of separation of cream from milk is called:

A Filtration

B Centrifugation

C Distillation

D Evaporation

Class 9 Science

The Tyndall effect is observed in which type of mixture?

A True solution

B Colloid

C Suspension only

D Element

Class 9 Science

The Tyndall effect is observed in which type of mixture?

A True solution

B Colloid

C Suspension only

D Homogeneous solution

Class 9 Science

A colloid differs from a true solution because:

A Colloids have particle sizes between 1 nm and 100 nm and show the Tyndall effect

B Colloids are always liquids while solutions are always solids

C Colloidal particles can be separated by ordinary filtration

D Colloids are always homogeneous

Class 9 Science

A mixture of acetone and water can be separated by:

A Filtration

B Sublimation

C Distillation

D Chromatography

Comments

No comments yet. Be the first to share your thoughts!