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
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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