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Measurement of Matter MCQ Class 9

 

Measurement of Matter Chapter No.4 
Class.9 MCQ
Science and Technology
Maharashtra State Board 

Measurement of Matter Chapter No.4  Class.9 MCQ

1

When a bottle of soda water is opened, carbon dioxide escape, producing a fizz. This is due to?

A

Decrease in solubility on decreasing temperature

B

Decrease in solubility on increasing temperature

C

Decrease in solubility on decreasing pressure

D

Decrease in solubility on increasing pressure

ANS

Decrease in solubility on decreasing pressure

 

2

A mixture of oil and water can be separate by?

A

Sublimation

B

Crystallization

C

Chromatography

D

Separating funnel

ANS

Separating funnel

 

3

Which of the following represents a chemical change?

A

Extraction of copper from copper pyrites

B

Distillation of water

C

Melting of wax

D

Dissolution of salt in water

ANS

Extraction of copper from copper pyrites

 

4

The sequence of steps for separating a mixture of salt, sand and camphor is?

A

Adding water, filtration, evaporation, sublimation

B

Adding water, filtration, sublimation, evaporation

C

Sublimation, adding water, filtration, evaporation

D

Sublimation, adding water, evaporation, filtration

ANS

Sublimation, adding water, filtration, evaporation

 

5

In the separation of dyes A and B by chromatograph, component B has more solubility in the solvent. Which component will rise faster?

A

A

B

B

C

Both at the same speed

D

Separation of dyes is independent of the solubility in solvent

ANS

B

 

6

Different components can be separated from petroleum by?

A

Filtration A

B

Chromatography

C

Simple distillation

D

Fractional distillation

ANS

Fractional distillation

 

7

What is the name of the metal which exist in liquid state at room temperature?

A

Sodium

B

Potassium

C

Mercury

D

Bromine

ANS

Mercury

 

8

Mixture of two or more metals, or metals and non-metals called as ………?

A

Alloy

B

Solution

C

Mixture

D

Metallic mixture

ANS

Alloy

 

9

Which of the following elements is not a metalloid?

A

Boron

B

Silicon

C

Germanium

D

Tungsten

ANS

Tungsten

 

10

Centrifugation do not used in ………?

A

Diagnostic laboratories

B

Separate butter and cream

C

To separate water and sugar

D

Used in washing machines

ANS

To separate water and sugar

  

11

A pure substance which is made up of only one kind of atom and cannot be broken into two or more simpler substances by physical or chemical means is referred to as?

A

A compound

B

An element

C

A molecule

D

A mixture

ANS

An element

 

12

Which of the following methods would you see to separate cream from milks?

A

Frictional distillation

B

Distillation

C

Centrifugation

D

Filtration

ANS

Centrifugation

 

13

How one can separate ammonium chloride from a mixture containing ammonium chloride and sodium chloride?

A

Precipitation

B

Sublimation

C

Chromatography

D

Centrifugation

ANS

Sublimation

 

14

Separation of dyes and black ink using ……… method?

A

Dissolution

B

Chromatographic

C

Sublimation

D

Suspension

ANS

Chromatographic

 

15

If the amount of solute contained in the solution is less than the saturation level it called as ………?

A

Saturated solution

B

Un saturated solution

C

Homogenous solution

D

Heterogenous solution

ANS

Un saturated solution

  

16

The component of solution that dissolved in solvent called ……….?

A

Solute

B

Sugar

C

Solvent

D

Mixture

ANS

Solvent

 

17

If the solution is 400ml and solvent is 300ml so what is percentage of solute?

A

30

B

40

C

45

D

25

ANS

25

 

18

Crystallization method is used to purify ……….?

A

Liquid

B

Gas

C

Solid

D

Miscible liquids

ANS

Solid

 

19

Four samples A,B,C,D are prepared by adding a pinch of copper sulphates a spatula of copper sulphate, a spatula of chalk powder, and some milk, to water respectively?

A

D

B

A and D

C

B and C

D

A and B

ANS

A and B

 

20

More than one kind of pure form of matter combines forming ………..?

A

Texture

B

Solution

C

Mixture

D

Component

ANS

Mixture

  

21

Rusting of an article made up of iron is called?

A

Corrosion and it is a physical as well as chemical change

B

Dissolution and it is a physical change

C

Corrosion and it is a chemical change

D

Dissolution and it is a chemical change

ANS

Corrosion and it is a chemical change

 

22

Air is …….. mixture?

A

Heterogenous

B

Gas

C

Solid

D

Homogenous

ANS

Gas

 

23

Mercury and bromine are both?

A

Liquid at room temperature

B

Solid at room temperature

C

Gasses at room temperature

D

Both (a) and (b)

ANS

Liquid at room temperature

 

24

Foam is the example of ……..?

A

Scattering light

B

Colloids

C

Saturated solution

D

Un saturated solution

ANS

Colloids

 

25

Chromatographic method used to separate?

A

Colors in dye

B

Drug from blood

C

Tea powder from factory

D

Drugs from blood

ANS

Tea powder from factory

  

26

Which of the following is a compound?

A

Stainless steel

B

Bronze

C

Graphite

D

Hydrogen Sulphide

ANS

Hydrogen Sulphide

 

27

Camphor can be purified by?

A

Distillation

B

Filtration

C

Sedimentation

D

Sublimation

ANS

Sublimation

 

28

Which of the following is considered to be a pure substance?

A

Granite

B

Sodium chloride

C

Muddy water

D

Milk of magnesia

ANS

Sodium chloride

 

29

To prepare iron sulphide, by heating a mixture of iron filings and sulphur powder, we should use a?

A

Copper dish

B

Water glass

C

China dish

D

Petri dish

ANS

China dish

 

30

One common method used to separate dyes is?

A

Filtration

B

Distillation

C

Chromatography

D

Conductivity

ANS

Chromatography

  

31

Which of the following is an example of a mixture?

A

Sugar

B

Brass

C

CO2

D

NO3

ANS

Brass

 

32

Which of the following is not a chemical change?

 A

Rusting of iron

B

Converting water into steam

C

Making used from milk

D

Heating cool

ANS

Converting water into milk

 

33

In a balanced chemical equation, the reactant side and the produce side have the same number of?

A

Atoms

B

Molecules

C

Ions

D

Electrons

ANS

Atoms

 

34

In the chemical equation, mg  O2 – 2Mgo, O2 represents?

A

Atoms of oxygen joined together in a molecule

B

Molecule of oxygen

C

Grams of oxygen

D

Mole of oxygen

ANS

Atoms of oxygen joined together in a molecule

 

35

The change of state of substance from gas to liquid is called?

A

Melting

B

Boiling

C

Condensation

D

Vaporization

ANS

Condensation

  

 

 

 

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