Class 9 - Chemistry Set 3
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1. The particles of a true solution
are visible with naked eye
are visible with powerful microscope
cannot be seen even with microscope
None of these
2. Cold lemonade tastes very nice. However, Ram was a little confused while making the lemonade in choosing the 'type' of water to dissolve sugar in it. Can you help him to make lemonade and reduce his time involved in doing so?
3. A model of atom like christmas pudding was given by
4. Which scientist used the term 'element' for the first time ?
5. The polyatomic radical among the following is
Both (1) and (3)
6. Thomson atomic model can explain only
existence of nucleus
All the these
7. Assertion : Liquids diffuses less easily as
compared to gases. Reason : Intermolecular forces are greater in
8. 0.6 mole of hydrogen peroxide [H2O2] weighs
9. Who discovered neutron?
10. Atomic number of any elementâ€“
Atomic weight divided by two
Number of neutron in nucleus
11. What is the additional apparatus added to the simple distillation apparatus to convert it into a fractional distillation apparatus?
12. A group of atoms chemically bonded together is a (an)
13. The chemical symbol for bromine gas is :
14. The semi- clear water is allowed to pass through beds of sand, charcoal and gravel to remove suspended impurities. This process is known as
15. Cold lemonade tastes very nice. However, Ram was a little confused while making the lemonade in choosing the 'type' of water to dissolve sugar in it. Can you help him to make lemonade and reduce his time involved in doing so?
16. Calculate the mass of 5 moles of CO2.
17. How many grams of O is present in 50 g of CaCO3?
18. The zig-zag movement of dispersed phase particles in a colloidal system is known as
19. Which of the following are fluids?
Liquids and solids
Gases and liquids
Solids and gases
All solids, liquids and gases
20. Out of the following which is the densest state of matter ?
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