Welcome to your 2ND TERM CHEMISTRY EXAMINATION JSS2
2.
1. The burning of materials in the presence of air is called
3.
2. All physical changes are
4.
3. The method of separation used in refining crude oil is known as
5.
4. The coating of zinc on iron
6.
5. Which of the following is a disadvantage of evaporation
7.
6. Oil and water may be separated by using
8.
7. This is a simple method of separating an insoluble solid from a liquid
9.
8. Which of the following would you use to separate sand from iron fillings
10.
9. Water and alcohol are easily separated by distillation because of their
11.
10. Liquids that do not mix are said to be
12.
11. Which of the following substances is a mixture
13.
12. Two or more substance mingled together but not chemically combined are known as a
14.
13. Which of the following methods is used to separate the colors in food days
16.
15. Salt is obtained from sea water by drying it in the sun. The process is known as
17.
16. Peanuts are separated from a mixture of peanuts and corn by
18.
17. The technique that separates a liquid from an insoluble solid by carefully pouring off the liquid is called
19.
18. Air is regarded as a mixture because
20.
19. In which of the following are the constituents present in any ratio
21.
20. Purity of a solid substance can be checked by its