Updated by Tiwari Academy
on June 10, 2023, 8:29 AM
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.
Q1
Two chemical species X and Y combine together to form a product P which contains both X and Y, X + Y → P, X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following concerning the species X, Y and P are correct?
[A]. P is a compound, X and Y are compounds, X and Y are elements.
[B]. P is a compound, X and Y are compounds, P has a fixed composition.
[C]. X and Y are compounds, X and Y are elements, P has a fixed composition.
[D]. P is a compound, X and Y are elements, P has a fixed composition.
Q2
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:
[A]. An element cannot be split up into two or more simpler substances because it is made of only one kind of atoms.
[B]. There are 118 elements known at present, out of which 94 elements, occur in nature while the remaining 24 elements have been prepared artificially.
[C]. 11 elements are gases whereas only two elements mercury and bromine a liquid at room temperature.
[D]. All of the above
Q3
Tincture of iodine has antiseptic properties. This solution is made by dissolving :
[A]. Iodine in potassium iodide
[B]. Iodine in acetone
[C]. Iodine in water
[D]. Iodine in alcohol
Q4
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
Q5
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:
[A]. Water cannot be separated into its constituent’s hydrogen and oxygen by the physical methods.
[B]. It contains hydrogen and oxygen combined together in a fixed proportion of 1 : 9 by mass.
[C]. Heat and light are given out when water is prepared by burning hydrogen in oxygen.
[D]. None of the above.
Q6
In a science quiz competition, Sneha are asked a question where she had to choose the statement which was/were incorrect?
[A]. A suspension is a heterogeneous mixture in which the small particles of a solid are spread throughout a liquid without dissolving in it.
[B]. If a beam of light passed through a chalk and water suspension, it is scatter the beam of light and renders its path visible inside it.
[C]. A colloid is a kind of solution in which the size of solute particles is intermediate between those in true solution and those in suspensions.
[D]. In a true solution (like sugar solution), the solid particles are small and they can easily scatter light rays falling on them.
Q7
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.
Q8
Which of the following statement is or are incorrect?
[A]. Centrifugation is a method for separating the suspended particles of a substance from a liquid in which the mixture is rotated at a high speed in a centrifuge.
[B]. The process of centrifugation is used in dairies to separate cream from milk.
[C]. The separation of a dissolved solids from a liquid can be done by only one methods as evaporation.
[D]. None of 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
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.
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Last Edited: June 10, 2023
