10th Standard CBSE - Science - Metals and Non-Metals

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Question - 1

Which of the following pairs will give displacement reactions?

  • A NaCl solution and copper metal
  • B MgCl2 solution and aluminium metal
  • C FeSO4 solution and silver metal
  • D AgNO3 solution and copper metal

Question - 2

Which of the following methods is suitable for preventing an iron frying pan from rusting?

  • A Applying grease
  • B Applying paint
  • C Applying a coating of zinc
  • D All of the above

Question - 3

An element reacts with oxygen to give a compound with a high melting point. This compound is also suitable in water. The element is likely to be

  • A Calcium
  • B Carbon
  • C Silicon
  • D Iron

Question - 4

Food cans are coated with tin and not with zinc because

  • A Zinc is costlier than tin
  • B Zinc has a higher melting point than tin
  • C Zinc is more reactive than tin
  • D Zinc is less reactive than tin

Question - 5

Which of the following properly is generally not shown by metals?

  • A Electrical conduction
  • B Sonorous in nature
  • C Dullness
  • D Ductility

Question - 6

The ability of metals to be drawn into thin wire is known as

  • A Ductility
  • B mallleability
  • C Sonorousity
  • D conductivity

Question - 7

Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

(i) Good thermal conductivity

(ii) Good electrical conductivity

(iii) Ductility

(iv) High melting point

  • A (i) and (ii)
  • B (i) and (iii)
  • C (ii) and (iii)
  • D (i) and (iv)

Question - 8

Which one of the following metals do not react with cold as well as hot water?

  • A Na
  • B Ca
  • C Mg
  • D Fe

Question - 9

Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?

  • A FeO
  • B Fe2O3
  • C Fe3O4
  • D Fe2O3 and Fe3O4

Question - 10

What happens when calcium is treated with water?

(i) It does not react with water.

(ii) It reacts violently with water.

(iii) It reacts less violently with water.

(iv) Bubbles of hydrogen gas formed stick to the surface of calcium.

  • A (i) and (iv)
  • B (ii) and (iii)
  • C (i) and (ii)
  • D (iii) and (iv)
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