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MCQs for Metals and Non-Metals
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MCQs for Metals and Non-Metals
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21 Questions

1. Example of an amphoteric oxide is:
2. Amalgam is an alloy of
3. Copper objects lose their shine and form green coating of
4. Which of the following is the correct arrange-ment of the given metals in ascending order of their reactivity. Zinc, Iron, Magnesium, Sodium
5. The poorest conductor of heat among metals is
6. An element X is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following
7. Which of the following non-metal is lustrous?
8. The most abundant metal in the earth's crust is
9. Aluminium is used for making cooking uten¬sils. Which of the following properties of alu¬minium are responsible for the same? (i) Good thermal conductivity (ii) Good electrical conductivity (iii) Ductility (iv) High melting point
10. In thermite welding a mixture of .... and .... is ignited with a burning magnesium ribbon which produces molten iron metal as large amount of heat is evolved.
11. Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
12. Copper objects lose their shine and form green coating of
13. Aluminium is used for making cooking uten¬sils. Which of the following properties of alu¬minium are responsible for the same? (i) Good thermal conductivity (ii) Good electrical conductivity (iii) Ductility (iv) High melting point
14. Which of the following non-metal is lustrous?
15. The electronic configuration of three elements X, Y and Z are as follows. X = 2, 4, Y = 2, 7, Z = 2,1 Which two elements will combine to form an ionic compound and write the correct formula,
16. Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper etc. are reduced by using
17. The highly reactive metals like Sodium, Potas-sium, Magnesium, etc. are extracted by the
18. Al2O3 + 2NaOH → .... + H2O
19. Galvanisation is a method of protecting iron from rudftng by coating with a thin layer of
20. In thermite welding a mixture of .... and .... is ignited with a burning magnesium ribbon which produces molten iron metal as large amount of heat is evolved.
21. Non-metals form covalent chlorides because