Is Matter Around Us Pure? Mock Tests

9 questions available

Is Matter Around Us Pure? Mock Test 1

Questions: 9

नमूना प्रश्न

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

A mixture of acetone and water can be separated by:

A Filtration

B Sublimation

C Distillation

D Chromatography

Class 9 Science

Which of the following is a colloid?

A Salt solution

B Milk

C Sugar solution

D Win

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

The process of separation of cream from milk is called:

A Filtration

B Centrifugation

C Distillation

D Evaporation

Class 9 Science

Colloidal particles are approximately of what size range?

A 1 to 100 nm

B 0.1 to 1 nm

C 100 to 1000 nm

D 1 to 10 μm

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

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

Is Matter Around Us Pure? Mock Tests

Is Matter Around Us Pure? Mock Test 1

नमूना प्रश्न

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