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Class 10 Metals and Non Metals Important questions-3


In this page we have Important Questions for Class 10 Metals and Non Metals -3 . Hope you like them and do not forget to like , social shar and comment at the end of the page.

True and false

  1. The composition of aqua-regia is Conc. HCl: Conc. HNO3 − 3: 1
  2. Metals are electronegative?
  3. Sodium chloride conducts electricity in solid state
  4. Chlorine is a half metal
  5. Cassiterite is not an ore of iron
  6. Electrical wires have a coating of an PVC insulting material
  7. Duralumin is a mixture of Copper and tin?
  8. Sodium Metal that can be easily cut with a knife
  9. The impurities (sand, silt, soil, gravel, etc.) present in the ore are called gangue

Match the column



Column A

Column B

Brass

An alloy of Copper and tin

Bronze

An alloy of copper and zinc

Solder

An alloy of iron and carbon

Steel

An alloy of lead and tin



Column A

Column B (electron dot structure)

Magnesium

2,8,7

Chlorine

2,8,2

Sodium

2,6

Oxygen

2,8,1

Fill in the blanks

  1. The minerals from which metals can be conveniently and profitably extracted are called ______
  2. _______ is the process in which a carbonate ore is heated below melting point in absence of air
  3. ______ is the process in which metal oxides are reduced to molten metal by using carbon
  4. The process of purifying impure metal to obtain pure metal is called ________

  1. _____________ is the eating up of metal by action of air, moisture on their surface
  2. ________ is the homogenous mixture of two or more metals
  3. The elements that exhibit properties of both metals and non – metals are called ____________

MCQ



1) Which of the following non-metals is a liquid?

a) Carbon

b) Bromine

c) Phosphorus

d) Sulphur

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.



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