Online Unit test -Metals

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Attempt all the questions. 25 ×2 =50 marks

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1. Which of the following properties is not generally shown by metals?

2 points

(a) brittle

(b) malleable

(d) conductor of heat

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2. Which of the following metals can replace copper from a solution of copper sulphate?

2 points

(a) silver

(b) gold

(d) platinum

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3. Alloys of which of the following metals are light and are used for making Aero planes?

2 points

(a) copper

(b) tin

(d) zinc

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4. Which of the following statements is incorrect?

2 points

(a) metals have luster

(b) all metal oxides are basic in nature .

(d) metals are malleable.

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5. Which of the following is the second most abundant metal in the Earth's crust?

2 points

(a) copper

(b) aluminium

(d) zinc

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6. Which of the following is not an ore of aluminium?

2 points

(a) cryolite

(b) feldspar

(d) azurite

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7. Which of the following elements is not present in stainless steel?

2 points

(a) iron

(b) tungsten

(d) nickel

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8. Which of the following is liquid at ordinary temperature?

2 points

(a) germanium

(b) gallium

(d) galena

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9. The best malleable metal is ...

2 points

(a) aluminium

(b) silver

(d) lead

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10. The best conductor of heat and electricity is....

2 points

(a) aluminium

(b) silver

(d) lead

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11. The poorest conductor of heat is ...

2 points

(a) aluminium.

(b) silver

(d) lead

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12. Which is not found in free state......

2 points

(a) sodium

(b) silver

d)Platinum

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13. The most abundant metal in the earth's ....

2 points

(a) iron

(b) copper

d)Mercury

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14. Naturally occurring metal containing...

2 points

(a) slag

(b) gangue

d)Mineral

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15. The chief ore of copper is

2 points

(a) bauxite

(b) copper pyrites

d)Calamine

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16. The chief ore of iron is....

2 points

(a) bauxite

(b) copper pyrites

d)Hematite

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17. The ore of copper is....

2 points

(a) cinnabar

(b) galena

(d) cryolite

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18. The ore of aluminium is......

2 points

(a) cinnabar

(b) galena

(d) cryolite

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19. Brass is a mixture of .......

2 points

(a) copper and zinc

(b) copper and tin

(d) aluminium, copper and traces of Mg and Mn.

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20. Bronze is a mixture of ......

2 points

(a) copper and zinc

(b) copper and tin

(d) aluminium, copper and traces of Mg and Mn

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21. The important ore of silver is ......

2 points

(a) bauxite

(b) chalcopyrite

(d) haematite

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22. The molecular formula of chalcocite is ........

2 points

(a) CuFeS2, (b) Ag2 S

(d) Fe2O3

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23. The specific gravity of aluminium is.....

2 points

(a) 7.86

(b) 2.7

(d) 10.52

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24. The electronic configuration of silver is 1s2, 2s2 ,2p6, 3s2 ,3p6 3d10, 4s2, 4p6 4d10, 5s1 then give it's position in periodic table ..

2 points

(a) d block I grouped 5th period

(b) s block VII group and 4th period

(d) none of these

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25. The salt used in photographic film is.....

2 points

(a) FeBr

(b) AIBI

(d) CuBr

Option 5

Other:

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