Class 9 Science Chapter 2 MCQ

Class 9 Science Chapter 2 MCQ (Multiple Choice Questions) of Is Matter Around us pure? All the questions are important for class unit tests and school’s terminal exams. MCQ Online tests take less time to revise any chapter.

So, Student can revise the entire chapter 2 of class 9 science in less time. These MCQ questions contain all intext and exercises questions also in the form of objective questions.




Class: 9Science
Chapter: 2Is Matter Around us pure?
Contents:MCQ Online Test with Answers

Class 9 Science Chapter 2 MCQ with Answers for 2021-2022

Class 9 Science Chapter 2 MCQ Online tests with solution and explanation. There are about 70 questions in the form of objectives with four choices. These MCQ covers the entire chapter of grade 9 Science NCERT Chapter 2. For the preparation of unit tests or terminal exams, students may use these questions as revision.

Q1

Consider the following statements and choose the correct one(s):

[A]. A pure substance is one which is made up of only one kind of particles.
[B]. All the elements and compounds are pure substances.
[C]. A pure substance cannot be separated into other kinds of matter by any physical process.
[D]. All of the above
Q2

The property/properties which enable copper metal to be used for making electric wires is / are

[A]. Copper metal is malleable and ductile
[B]. Copper metal is a good conductor of electricity
[C]. Copper metal is ductile and has low electrical resistance
[D]. Copper metal is sonorous and an excellent conductor of electricity




Q3

Which of the following are homogeneous in nature?

[A]. Ice, soil
[B]. Wood, air
[C]. Ice, air
[D]. Soil, air
Q4

Vibhu appeared in class test but he confused to know the incorrect statement. Would you help him to know that?

[A]. Aluminium foil are used for packing food items like biscuits, chocolates, medicine, cigarettes, etc.
[B]. Ductility is another important characteristic property of metals.
[C]. Malleability is an important characteristic property of metals.
[D]. The poorest conductor of heat among the metals is gold and silver.




Q5

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.
Q6

Consider the following statements and choose the correct one:

[A]. Graphite is the allotropic form of carbon and it is a good conductor of electricity.
[B]. Bromine is a non-metal which exist as a liquid at room temperature.
[C]. Phosphorus is a non-metal other than carbon which shows allotropy.
[D]. All the above



Q7

Priya is writing some statements, choose the incorrect statement and help him:

[A]. A soap solution cannot scatter a beam of light passing through it.
[B]. An emulsion is a colloid in which minute droplets of one liquid are dispersed in another liquid which is not miscible with it.
[C]. The gel is a semi-solid colloid in which there is a continuous network of solid particles dispersed in a liquid.
[D]. An aerosol is a colloid in which a solid or liquid is dispersed in a gas as fog, mist etc.
Q8

Nancy is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Nancy wants to take help from you:

[A]. The maximum amount of a solute which can be dissolved in hundred grams of a solvent at a specified temperature is known as the solubility of that solute in that solvent.
[B]. The solubility of solids in liquids usually increases on increasing the temperature and decreases on decreasing the temperature.
[C]. The solubility of gases in liquids increases on increasing the pressure and decreases on decreasing pressure.
[D]. All the above



Q9

Consider the following statements and choose the correct one:

[A]. The separation of two immiscible liquids by separating funnel depends on the difference in their densities.
[B]. A mixture of petrol and water can also be separated by using a separating funnel.
[C]. A mixture of mercury, water and benzene can be separated by separating funnel.
[D]. All the above.
Q10

Which of the following are physical changes?

[A]. Melting of iron metal, rusting of iron metal, bending of an iron rod.
[B]. Melting of iron metal, rusting of iron metal, drawing a wire of iron metal.
[C]. Melting of iron metal, bending of an iron rod, drawing a wire of iron metal.
[D]. Rusting of iron metal, bending of an iron rod, drawing a wire of iron metal.
What is a Solution?

A solution is a homogeneous mixture of two or more substances.

What are the main constituents of air?

The two main constituents of air are oxygen (21%) and nitrogen (78%).

What is Suspension?

A non-homogeneous systems in which solids are dispersed in liquids, are called suspensions. A suspension is a heterogeneous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium.

Write down two properties of Colloids?

1. Colloids are big enough to scatter a beam of light passing through it and make its path visible.
2. They do not settle down when left undisturbed, that is, a colloid is quite stable.

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