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