Metals and Non Metals Class 8 MCQ

Questions

    Metals and Non Metals Class 8 MCQ. We covered all the Metals and Non Metals Class 8 MCQ in this post for free so that you can practice well for the exam.

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    MCQ on Metals and Non Metals for Class 8 Students

    Quick Quiz

    The Valency of Cr in CrPO4 is

    (a) 4

    (b) 3

    (c) 2

    (d) 1

    Option b – 3

    Which one of the following metal oxides shows both acidic and basic characteristics?

    (a) Na₂O

    (b) K₂O

    (c) CuO

    (d) Al2O3

    Option d – Al2O3

    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)

    Option d – (i) and (iv)

    The metalloids include the elements

    (a) Boron, Silicon

    (b) Arsenic, Antimony

    (c) Germanium, Tellurium

    (d) All of the above

    Option a – Boron, Silicon

    Select the one that could displace copper from a solution of copper sulphate.

    (a) Silver

    (b) Mercury

    (c) Tin

    (d) Gold

    Option c – Tin

    Select the property that is associated with non-metals.

    (a) Low density

    (b) Low melting point

    (c) Poor conductor of electricity

    (d) All of the above

    Option d – All of the above

    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

    Option c – Applying a coating of zinc

    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

    Option c – zinc is more reactive than tin

    Which of the following non-metals sublimes on heating?

    (a) Fluorine

    (b) Chlorine

    (c) Bromine

    (d) Iodine

    Option d – Iodine

    Which of the following statement regarding metals is true?

    (a) All metals are solid in nature.

    (b) Metals can be used to make handles for cooking utensils

    (c) Generally most metals have high melting and boiling points.

    (d) Gold is used generally to make electrical wires.

    Option c – Generally most metals have high melting and boiling points

    Metals are

    (a) malleable

    (b) ductile

    (c) Both (a) and (b)

    (d) Neither (a) nor (b)

    Option c – Both (a) and (b)

    Which of the following have low melting and boiling points?

    (a) Phosphorus

    (b) Sodium

    (c) Iron

    (d) (a) and (b)

    Option d – (a) and (b)

    Which of the following metal(s) catch fire in reaction with water?

    (a) Sodium

    (b) Potassium

    (c) Magnesium

    (d) (a) and (b)

    Option d – (a) and (b)

    A metal, which forms a protective layer of its oxide in reaction with atmospheric oxygen, on its surface is

    (a) sodium

    (b) aluminium

    (c) potassium

    (d) magnesium

    Option b – aluminium

    Which of the following non-metals has shining lustrous surfaces?

    (a) Graphite and phosphorus

    (b) Graphite and iodine

    (c) Iodine and phosphorus

    (d) Phosphorus and chlorine

    Option b – Graphite and iodine

    Metals like Gold, Platinum which do not easily react are called

    (a) active metals

    (b) dull metals

    (c) noble metals

    (d) bright metals

    Option c – noble metals

    Brass is a mixture of

    (a) copper and zinc

    (b) copper and tin

    (c) copper, nickel and zinc

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

    Option a – copper and zinc

    The white phosphorus is stored

    (a) in the air

    (b) underwater

    (c) under kerosene

    (d) under CS₂

    Option b – underwater

    Aluminium is obtained from purified bauxite by

    (a) electrolysis process

    (b) strongly heating with coke

    (c) strongly heating in a current of CO

    (d) strongly heating in a current of H₂

    Option a – electrolysis process

    Sodium is obtained by the electrolysis of

    (a) an aqueous solution of sodium chloride

    (b) an aqueous solution of sodium hydroxide

    (c) fused sodium chloride

    (d) fused sodium sulphate

    Option c – fused sodium chloride

    The chief ore of aluminium is

    (a) bauxite

    (b) cryolite

    (c) alunite

    (d) feldspar

    Option a – bauxite

    One of the constituents of amalgam is

    (a) aluminium

    (b) copper

    (c) iron

    (d) Mercury

    Option d – Mercury

    Which of the following metals reacts with water/steam to produce oxide instead of hydroxide?

    (a) Sodium

    (b) Potassium

    (c) Calcium

    (d) Magnesium

    Option d – Magnesium

    Which of the following elements produces basic oxide on reacting with oxygen?

    (a) Chlorine

    (b) Sulphur

    (c) Phosphorus

    (d) Magnesium

    Option d – Magnesium

    Copper sulphate solution can be safely kept in a container made of

    (a) aluminium

    (b) lead

    (c) Silver

    (d) zinc

    Option c – Silver

    The metal reacts with oxygen to form

    (a) neutral oxides

    (b) basic oxides

    (c) acidic oxides

    (d) None of these

    Option b – basic oxides

    The metal used to build bridges is

    (a) gold

    (b) Silver

    (c) platinum

    (d) iron

    Option d – iron

    Non-metallic oxides are

    (a) acidic

    (b) basic

    (c) neutral

    (d) (a) and (c)

    Option d – (a) and (c)

    Which of the following metals can displace hydrogen from acids?

    (a) Silver

    (b) Mercury

    (c) Magnesium

    (d) Copper

    Option c – Magnesium

    Which of the following are good conductors of heat and electricity?

    (a) Graphite

    (b) Oxygen

    (c) Chlorine

    (d) Nitrogen

    Option a – Graphite

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