Chapter 15: Mixtures - Science Mcqs for Grade 7

1.

When salt is mixed into water it becomes

A. element

B. compound

C. mixture

D. solute

Answer & Solution Discuss in Board

2.

Alloys include

A. steel

B. brass

C. bronze

D. all of them

Answer & Solution Discuss in Board

3.

The point at which solid substance changes into liquid state, is called

A. melting point

B. boiling point

C. power point

D. complex point

Answer & Solution Discuss in Board

4.

The techniques which help to separate mixtures, involve

A. filtration

B. distillation

C. chromatography

D. all of them

Answer & Solution Discuss in Board

5.

In clean air, percentage of oxygen is

A. 0.07

B. 0.1

C. 0.15

D. 0.17

Answer & Solution Discuss in Board

6.

A technique which is used to desalinate water, is

A. reverse osmosis

B. distillation

C. filtration

D. heating

Answer & Solution Discuss in Board

7.

Balloons are filled with

A. carbon dioxide

B. oxygen

C. helium

D. nitrogen

Answer & Solution Discuss in Board

8.

Nitrogen helps in preparation of nitrogen based

A. plants

B. fertilizers

C. seeds

D. trees

Answer & Solution Discuss in Board

9.

For purification water is passed through

A. sand

B. colander

C. watch glass

D. strainer

Answer & Solution Discuss in Board

10.

The percentage of noble gases in air is

A. 0.2095

B. 0.78

C. 0.009

D. 0.0003

Answer & Solution Discuss in Board

Practice MCQ Questions and answers on Chapter 15: Mixtures - Science Mcqs for Grade 7

1. When salt is mixed into water it becomes

Answer & Solution

2. Alloys include

Answer & Solution

3. The point at which solid substance changes into liquid state, is called

Answer & Solution

4. The techniques which help to separate mixtures, involve

Answer & Solution

5. In clean air, percentage of oxygen is

Answer & Solution

6. A technique which is used to desalinate water, is

Answer & Solution

7. Balloons are filled with

Answer & Solution

8. Nitrogen helps in preparation of nitrogen based

Answer & Solution

9. For purification water is passed through

Answer & Solution

10. The percentage of noble gases in air is

Answer & Solution

Read More Section(Science Mcqs)

1.

When salt is mixed into water it becomes

2.

Alloys include

3.

The point at which solid substance changes into liquid state, is called

4.

The techniques which help to separate mixtures, involve

5.

In clean air, percentage of oxygen is

6.

A technique which is used to desalinate water, is

7.

Balloons are filled with

8.

Nitrogen helps in preparation of nitrogen based

9.

For purification water is passed through

10.

The percentage of noble gases in air is