Class 9 Practice Level 1 – Is Matter Around Us Pure?

Total questions: 40

What is an element?

Topic: Elements and Compounds

A mixture of different substances

A pure substance that cannot be broken down into simpler substances

A substance composed of two or more elements

A homogeneous mixture

None

Which of the following is an example of a compound?

Topic: Elements and Compounds

Oxygen

Gold

Water

Nitrogen

None

What is a mixture?

Topic: Mixtures

A pure substance that be separated

A combination of two or more substances that are chemically combined

A combination of two or more substances that are not chemically combined

A substance with a fixed composition

None

Which of the following is a homogeneous mixture?

Topic: Homogeneous Mixtures

Salad

Salt water

Sand and water

Oil and water

None

Which of the following is a heterogeneous mixture?

Topic: Heterogeneous Mixtures

Air

Vinegar

Salt water

Salad

None

What is a solution?

Topic: Solutions

A heterogeneous mixture

A pure substance

A homogeneous mixture of two or more substances

A compound

None

In a salt solution, what is the solute?

Topic: Solvent and Solute

Water

Salt

Sugar

Alcohol

None

Which of the following is an example of a colloid?

Topic: Types of Mixtures

Salt water

Muddy water

Milk

Air

None

Which method is used to separate a solid from a liquid in a heterogeneous mixture?

Topic: Separation Techniques

Evaporation

Filtration

Distillation

Chromatography

None

10.

Which separation technique is used to separate a mixture of two immiscible liquids?

Topic: Separation Techniques

Filtration

Decantation

Evaporation

Chromatography

None

11.

What is an alloy?

Topic: Alloys

A pure metal

A mixture of two or more metals

A compound of metals and non-metals

A heterogeneous mixture

None

12.

Which of the following is an example of a mixture?

Topic: Mixtures

Pure water

Gold

Air

Hydrogen

None

13.

Which of the following is a homogeneous mixture?

Topic: Homogeneous Mixtures

Oil and water

Sand and water

Vinegar

Wood

None

14.

What type of mixture is a solution?

Topic: Solutions

Heterogeneous

Homogeneous

Colloid

Suspension

None

15.

What is a suspension?

Topic: Suspensions

A solution

A homogeneous mixture

A mixture where particles settle over time

A compound

None

16.

Which of the following is an example of a colloid?

Topic: Colloids

Sugar solution

Muddy water

Blood

Oxygen

None

17.

Which separation technique uses heat to separate a soluble solid from a liquid?

Topic: Solutions

Filtration

Distillation

Evaporation

Decantation

None

18.

Which separation technique can separate components of a mixture based on boiling points?

Topic: Distillation

Filtration

Distillation

Evaporation

Chromatography

None

19.

Which method is used to separate different pigments from an ink sample?

Topic: Chromatography

Filtration

Distillation

Chromatography

Evaporation

None

20.

What can filtration be used to separate?

Topic: Filtration

Two miscible liquids

A soluble solid from a liquid

A solid from a liquid

Two immiscible liquids

None

21.

Which of the following is a pure substance?

Topic: Pure Substances

Salt solution

Air

Copper

Vinegar

None

22.

Which of the following is not a homogeneous mixture?

Topic: Homogeneous Mixtures

Brass

Salt water

Oil and water

Air

None

23.

Which of the following is not a heterogeneous mixture?

Topic: Heterogeneous Mixtures

Salad

Sand and water

Sugar solution

Granite

None

24.

Bronze is an alloy of:

Topic: Alloys

Copper and zinc

Copper and tin

Iron and carbon

Aluminium and copper

None

25.

Which of the following is a solution?

Topic: Solutions

Milk

Blood

Sea water

Muddy water

None

26.

Which of the following is not separated by filtration?

Topic: Filtration

Sand from water

Tea leaves from tea

Salt from saltwater

Mud from water

None

27.

Evaporation can be used to separate:

Topic: Evaporation

Iron filings from sand

Salt from saltwater

Pebbles from sand

Mud from water

None

28.

Decantation can be used to separate:

Topic: Decantation

Oil and water

Salt from water

Sand from water

Iron from sulphur

None

29.

Which of the following is not a pure substance?

Topic: Pure Substances

Gold

Oxygen

Water

Air

None

30.

A mixture of alcohol and water is:

Topic: Homogeneous Mixtures

A colloid

A suspension

A homogeneous mixture

A heterogeneous mixture

None

31.

Which method is used to separate dyes in black ink?

Topic: Separation Techniques

Filtration

Chromatography

Evaporation

Distillation

None

32.

Which of the following is a characteristic of colloids?

Topic: Colloids

Particles settle on standing

Particles are visible to the naked eye

Particles scatter light

Particles dissolve completely

None

33.

Which of the following is a characteristic of suspensions?

Topic: Suspensions

Particles do not settle

Particles are visible and settle on standing

Particles are smaller than in solutions

Particles form a uniform composition

None

34.

Distillation is used to separate components of a mixture based on:

Topic: Distillation

Colour

Size

Boiling points

Density

None

35.

Which of the following increases the solubility of a solid in a liquid?

Topic: Solubility

Decreasing temperature

Increasing temperature

Increasing pressure

Stirring

None

36.

What is retained on the filter paper in filtration?

Topic: Filtration

Solute

Solvent

Filtrate

Residue

None

37.

What is the term for the substance that dissolves in a solvent?

Topic: Solutions

Solute

Solution

Solvent

Colloid

None

38.

Which method separates a mixture by passing it through a medium where components move at different rates?

Topic: Separation Techniques

Filtration

Distillation

Chromatography

Evaporation

None

39.

Which of the following is more soluble in hot water than in cold water?

Topic: Solubility

Oxygen

Nacl

Sugar

Kcl

None

40.

What is a pure substance?

Topic: Pure Substances

A mixture of different substances

A material with a uniform and definite composition

A substance with variable composition

A combination of two or more elements

None

1 out of 40

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Class 9 Practice Level 1 – Is Matter Around Us Pure?

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