Class 9 - Chemistry Set 3
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1. The particles of a true solution *
1 point
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? *
1 point
3. A model of atom like christmas pudding was given by *
1 point
4. Which scientist used the term 'element' for the first time ? *
1 point
5. The polyatomic radical among the following is *
1 point
6. Thomson atomic model can explain only *
1 point
7. Assertion : Liquids diffuses less easily as
 compared to gases. Reason : Intermolecular forces are greater in
 gases. *
1 point
8. 0.6 mole of hydrogen peroxide [H2O2] weighs *
1 point
9. Who discovered neutron? *
1 point
10. Atomic number of any element– *
1 point
11. What is the additional apparatus added to the simple distillation apparatus to convert it into a fractional distillation apparatus? *
1 point
12. A group of atoms chemically bonded together is a (an) *
1 point
13. The chemical symbol for bromine gas is : *
1 point
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 *
1 point
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? *
1 point
16. Calculate the mass of 5 moles of CO2. *
1 point
17. How many grams of O is present in 50 g of CaCO3? *
1 point
18. The zig-zag movement of dispersed phase particles in a colloidal system is known as *
1 point
19. Which of the following are fluids? *
1 point
20. Out of the following which is the densest state of matter ? *
1 point
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