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# MCQ : Is Matter Around Us Pure - 3

## 20 Questions MCQ Test Science Class 9 | MCQ : Is Matter Around Us Pure - 3

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This mock test of MCQ : Is Matter Around Us Pure - 3 for Class 9 helps you for every Class 9 entrance exam. This contains 20 Multiple Choice Questions for Class 9 MCQ : Is Matter Around Us Pure - 3 (mcq) to study with solutions a complete question bank. The solved questions answers in this MCQ : Is Matter Around Us Pure - 3 quiz give you a good mix of easy questions and tough questions. Class 9 students definitely take this MCQ : Is Matter Around Us Pure - 3 exercise for a better result in the exam. You can find other MCQ : Is Matter Around Us Pure - 3 extra questions, long questions & short questions for Class 9 on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### Which of the following is a colloid?

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QUESTION: 4

Which of the following is a physical change?

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QUESTION: 5

When iron and sulphur are heated at high temperature

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QUESTION: 6

Which of the following has the highest solubility at 293 K?

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QUESTION: 7

The size of the colloidal particle is in the range of

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QUESTION: 8

Which of the following statements is true?

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QUESTION: 9

Which out of the following is a heterogeneous mixture?

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QUESTION: 10

The size of particles of true solutions is

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QUESTION: 11

The cause of Brownian movement is

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Brownian movement arises because of the impact of the molecules of the dispersion medium with the colloidal particles. Since the impacts of the molecules of the dispersion medium on the colloidal particles are unequal (i.e. unbalanced bombardment), the result is zig-zag motion.

QUESTION: 12

40 g of common salt is dissolved in 320 g of water. The mass percentage of salt is

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QUESTION: 13

Which of the following is not a compound?

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QUESTION: 14

The particles of suspension

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QUESTION: 15

Which of the following statement is true about compounds?

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QUESTION: 16

The particles of colloidal solution can be separated by

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The process by which we can separate the particles of a colloidal solution is called Centrifugation.

QUESTION: 17

Which of the following statement is always true when a substance undergoes physical change

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QUESTION: 18

What is the percentage of fat present in milk of full cream?

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Full-fat milk is standardised to 3.5% of fat and semi skimmed milk contains approximately 1.5% fat. Skimmed milk and buttermilk are very low in fat and, on average, contain 0.1 or 0.2% fat respectively.

QUESTION: 19

Which of the following is heterogeneous?

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QUESTION: 20

Kerosene oil and water can be separated by

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