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Class 9 Science Chapter 2 Is Matter Around Us Pure Quiz 1 (25 MCQs)

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1. A mixture of two or more metals or a metal and non-metal is known as
2. The amount of solute present in the saturated solution at which no more solute can be added it is called .....
3. Heterogeneous mixture in which the solute particles do not dissolve and remain suspended throughout the solvent and the solute particles can be seen with the naked eye is known as:
4. Dispersed phase of gel is
5. Jelly is an example of which type of colloid?
6. What is the percentage by volume of nitrogen in atmosphere?
7. What is the mass of one mole of cane sugar? (Formula of cane sugar is C$_{12}$H$_{22}$O$_{11}$)
8. All matter is made up of
9. This is made up of one or more of the SAME kind of atom
10. Due to which property does a bell ring?
11. Name the waxy, transparent solid which changes from solid to gas.
12. Naphthalene and iron filings can be separated by the method of
13. Hard question. What is h2o
14. How many moles of NaCl are present in 6000. ml a 1.5 M NaCl solution?
15. Air is regarded as a mixture because:
16. For frictional distillation, the difference in their boiling points should be .....
17. .One common method used to separate dyes is:
18. Combination of two or more pure substances that are not chemically combined
19. Which of the following is true about solution
20. Which of the following is an example of a homogeneous substance?
21. Immiscible liquids separate out into layers depending on their
22. How many elements remain in the gaseous state at room temperature?
23. State True or False:Fine beam of light entering through a small hole in a dark room, illuminates the particles in its paths. This is because of Tyndall effect.
24. Find concentration of solution in which 10 g of sugar is dissolved in a solution of mass 100 g
25. How will you separate a mixture of petrol and water
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