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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
What is the valency of chromium in CrPO₄?
a) 4
b) 3
c) 2
d) 1
Option b – 3
Which metal oxide displays both acidic and basic behavior?
a) Na₂O
b) K₂O
c) CuO
d) Al₂O₃
Option d – Al₂O₃
Aluminium is used for making kitchen utensils. Which of its properties make it suitable? (i) Excellent Heat conductivity (ii) High electrical conductivity (iii) Ductile in nature (iv) Elevated melting point
a) (i) and (ii)
b) (i) and (iii)
c) (ii) and (iii)
d) (i) and (iv)
Option d – (i) and (iv)
Which of the following elements are classified as metalloids?
a) Boron, Silicon
b) Arsenic, Antimony
c) Germanium, Tellurium
d) All of the above
Option a – Boron, Silicon
Which metal is capable of displacing copper from copper sulfate solution?
a) Silver
b) Mercury
c) Tin
d) Gold
Option c – Tin
What is a common property found in non-Metals?
a) Lower density
b) Low melting temperature
c) Poor conductivity for Electricity
d) All of the above
Option d – All of the above
What is an effective method to stop rust from forming on an iron frying pan?
a) Coating with grease
b) Painting the surface
c) Applying a zinc layer
d) All of the above
Option c – Applying a zinc layer
Why is tin preferred over zinc for coating Food cans?
a) Tin is more expensive than zinc
b) Tin melts at a higher temperature than zinc
c) Zinc is more reactive than tin
d) Zinc is less reactive than tin
Option c – Zinc is more reactive than tin
Which non-metal changes directly from Solid to gas when heated?
a) Fluorine
b) Chlorine
c) Bromine
d) Iodine
Option d – Iodine
Which of the following statements about Metals is correct?
a) All Metals are found in Solid state
b) Metal handles are commonly used in cooking tools
c) Metals usually possess high boiling and melting points
d) Gold is generally used in manufacturing electrical wires
Option c – Metals usually possess high boiling and melting points
How are metals generally described?
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 relatively lower melting and boiling points?
a) Phosphorus
b) Sodium
c) Iron
d) (a) and (b)
Option d – (a) and (b)
Which of these metals ignite when reacting with water?
a) Sodium
b) Potassium
c) Magnesium
d) (a) and (b)
Option d – (a) and (b)
Identify the metal that develops a protective oxide layer when exposed to air.
a) Sodium
b) Aluminium
c) Potassium
d) Magnesium
Option b – Aluminium
Which non-metals exhibit a shiny surface?
a) Graphite and Phosphorus
b) Graphite and Iodine
c) Iodine and Phosphorus
d) Phosphorus and Chlorine
Option b – Graphite and Iodine
Metals such as gold and platinum that resist reacting easily are known as
a) active metals
b) dull metals
c) noble metals
d) bright metals
Option c – noble metals
Brass is composed 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
White phosphorus is stored
a) in the air
b) underwater
c) under kerosene
d) under CS₂
Option b – underwater
Aluminium is extracted from refined bauxite using
a) electrolysis process
b) high-temperature heating with coke
c) intense heating in a carbon monoxide stream
d) intense heating in a hydrogen stream
Option a – electrolysis process
Sodium is produced through electrolysis of
a) aqueous sodium chloride solution
b) aqueous sodium hydroxide solution
c) molten sodium chloride
d) molten sodium sulphate
Option c – molten sodium chloride
The main ore used to obtain aluminium is
a) bauxite
b) cryolite
c) alunite
d) feldspar
Option a – bauxite
One of the components found in amalgam is
a) aluminium
b) copper
c) iron
d) mercury
Option d – mercury
Which metal forms an oxide, not hydroxide, when reacting with water or steam?
a) sodium
b) potassium
c) calcium
d) magnesium
Option d – magnesium
Which element forms a basic oxide upon reaction with oxygen?
a) chlorine
b) sulphur
c) phosphorus
d) magnesium
Option d – magnesium
Copper sulphate solution can be stored safely in a container made of
a) aluminium
b) lead
c) silver
d) zinc
Option c – silver
When metals combine with oxygen, they generally produce
a) neutral oxides
b) basic oxides
c) acidic oxides
d) none of these
Option b – basic oxides
The metal commonly used in constructing bridges is
a) gold
b) silver
c) platinum
d) iron
Option d – iron
Oxides formed by non-metals are usually
a) acidic
b) basic
c) neutral
d) a and c
Option d – a and c
Which of these metals can release hydrogen from Acid solutions?
a) silver
b) mercury
c) magnesium
d) copper
Option c – magnesium
Which of the following materials conducts both Heat and Electricity effectively?
a) graphite
b) oxygen
c) chlorine
d) nitrogen
Option a – graphite
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