The rusting of an iron object is called:

Rusting of iron takes place in the presence of air (O2) and water vapour. Action of air and moisture on iron converts it to its oxide. This process is called corrosion and it leads to the formation of a new compound. Therefore, it is a chemical change.

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

Here, all these statements are correct. Hence your answer will be option [D].

A mixture of sulphur and carbon disulphide is:

Sulphur dissolves completely in carbon disulphide. So, it forms a homogeneous solution. As the particles of solute are too small to scatter light, they will not cause tyndall effect.

Tincture of iodine has antiseptic properties. This solution is made by dissolving :

Iodine dissolved in alcohol is called tincture of iodine.

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

Metals are good conductors of heat and electricity. This refers that metals allow heat and electricity to pass through them easily. Metals are generally good conductor of heat. Silver metal is the best conductor of heat. Gold and silver have the highest thermal conductivity. Copper and Aluminium metals are also very good conductors of heat.

Which of the following statements are true for pure substances?

A pure substance is made up of only one kind of particles like elements. The composition of pure compounds is also same throughout.

Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?

The substance which is dissolved in a liquid to make a solution is called solute and the liquid in which solute is dissolved is known as solvent. For example, salt solution is made by dissolving salt in water, so in salt solution “salt” is the solute and water is the “solvent”.

Pooja is writing some statements but she confused to know why water is considered as a compound and not a mixture. If you know the answer to this question, help her to choose the incorrect statements:

The composition of water is fixed. It contains hydrogen and oxygen combined together in a fixed proportion of 1 : 8 by mass. It has a definite formula H2O.

Class 9 Science Chapter 2 MCQ Is Matter Around us pure?

Updated by Tiwari Academy
on June 10, 2023, 8:29 AM

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 2024-25. 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: 9	Science
Chapter: 2	Is Matter Around us pure?
Contents:	MCQ Online Test with Answers

Class 9 Science Chapter 2 MCQ with Answers

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.

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

View Answer

Two substances, A and B were made to react to form a third substance, A2B according to the following reaction 2 A + B → A2B. Which of the following statements concerning this reaction are incorrect?

[A]. The product A2B shows the properties of substances A and B. The product will always have a fixed composition, the product so formed cannot be classified as a compound.

[B]. The product will always have a fixed composition. The product so formed cannot be classified as a compound, the product so formed is an element.

[C]. The product A2B shows the properties of substances A and B. The product so formed cannot be classified as a compound. The product so formed is an element.

[D]. The product will always have a fixed composition. The product so formed cannot be classified as a compound, the product so formed is an element.

View Answer

Which of the following statement is or are correct?

[A]. Metals can be beaten into thin sheets with the hammer without breaking.

[B]. Metals can be drawn or stretched into thin wires.

[C]. Metals allow heat and electricity to pass through them easily.

[D]. All of the above

View Answer

On the basis of composition of matter, milk is considered to be :

[A]. A pure substance

[B]. An impure substance

[C]. An element

[D]. A compound

View Answer

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.

View Answer

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

View Answer

Which of the following statement is or are incorrect?

[A]. A solution in which more quantity of solute can be dissolved without raising its temperature, is called an unsaturated solution.

[B]. A solution in which no more solute can be dissolved at that temperature is called a saturated solution.

[C]. If a saturated solution at a particular temperature is heated to a higher temperature, then it becomes unsaturated.

[D]. None of the above.

View Answer

Read the following sentences carefully, and choose the correct one:

[A]. Distillation is a process of heating a liquid to form vapour, and then cooling the vapour to get back liquid.

[B]. Chromatography is a technique of separating two or more dissolved solids which are present in a solution in very small quantities.

[C]. Black ink is a mixture of several colored substance or dyes which can be separated by paper chromatography.

[D]. All the above

View Answer

Read the following sentences carefully, and choose the correct one:

[A]. Argon is filled in electric bulbs.

[B]. The various gases of air are separated from one another by the fractional distillation of liquid air.

[C]. Fractional distillation separate the various liquids according to their boiling points, as the more volatile liquid distils over first and the less volatile liquid distils over later.

[D]. All the above.

View Answer

Q10

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

[A]. The elements which shows some properties of metals and some other properties of nonmetals are called metalloids.

[B]. The mixture is a substance which consists of two or more elements or compounds not chemically combined together.

[C]. All the suspension and colloids are considered as heterogeneous mixtures.

[D]. All the above.

View Answer

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Last Edited: June 10, 2023