Metals and Non Metals Class 10 MCQ Online Test. We covered all the Metals and Non Metals Class 10 MCQ Online Test 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 10 Students
Which of the following methods is not involved in the metallurgy of iron?
(a) calcination
(b) smelting
(c) concentration of ore
(d) none of these
Option a – calcination
Aluminium is used in thermite welding because
(a) aluminium is a light metal
(b) aluminium has more affinity for oxygen
(c) aluminium is a strong oxidising agent
(d) aluminium is a reactive metal
Option b – aluminium has more affinity for oxygen
Which of the following metals constitutes the alloy magnalium?
(a) Al, Cu
(b) Al, Fe
(c) Al, Mg
(d) Al, Mn
Option c – Al, Mg
The electrolytic reduction process is used for the extraction of
(a) highly electropositive metals
(b) metalloids
(c) less active metals
(d) transition metals
Option a – highly electropositive metals
Which metal is used as a reducing agent in smelting?
(a) C
(b) Al
(c) Zn
(d) None of these
Option d – None of these
Graphite is a/an
(a) alloy
(b) metal
(c) metalloid
(d) non-metal
Option a – alloy
The chief ore of aluminium is
(a) bauxite
(b) cryolite
(c) alunite
(d) feldspar
Option a – bauxite
Which one among the following does not have an allotrope?
(a) Oxygen
(b) Sulphur
(c) Nitrogen
(d) Carbon
Option c – Nitrogen
Which one of the following is not an allotrope of carbon?
(a) Coal
(b) Diamond
(c) Graphite
(d) Graphene
Option d – Graphene
Temporary hardness in water is due to which one of the following of Calcium and Magnesium?
(a) Hydrogencarbonates
(b) Carbonates
(c) Chlorides
(d) Sulphates
Option a – Hydrogencarbonates
Which one of the following elements forms the highest number of compounds?
(a) Oxygen
(b) Hydrogen
(c) Chlorine
(d) Carbon
Option d – Carbon
Which one of the following elements are used in pencil-lead?
(a) Zinc
(b) Lead
(c) Carbon (Graphite)
(d) Tin
Option c – Carbon (Graphite)
Removal of impurities from ore is known as
(a) crushing and grinding
(b) concentration of ore
(c) calcination
(d) roasting
Option b – concentration of ore
The froth floatation method is used for the concentration of
(a) oxide ores
(b) sulphide ores
(c) sulphate ores
(d) halide ores
Option b – sulphide ores
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
Aluminium does not oxidise readily in the air because
(a) is high in the electrochemical series
(b) it is low in the electrochemical series
(c) the metal does not combine with oxygen
(d) the metal is covered with a layer of oxide which does not rub off
Option d – the metal is covered with a layer of oxide which does not rub off
When iron filings are heated in a steam of dry hydrogen chloride, the compound formed is FeClx where ‘x’ is
(a) 1
(b) 2
(c) 3
(d) 4
Option b – 2
The compound from which metal is extracted economically is
(a) slag
(b) gangue
(c) ore
(d) mineral
Option c – ore
The process to heat the ore in the presence of an excess supply of air below its melting point is called
(a) roasting
(b) calcination
(c) smelting
(d) liquation
Option a – roasting
One of the constituents of amalgam is
(a) aluminium
(b) copper
(c) iron
(d) Mercury
Option d – Mercury
Which method is employed for obtaining a pure metal?
(a) Froth floatation
(b) Electrolytic refining
(c) Magnetic separation
(d) Gravity separation
Option b – Electrolytic refining
What is anode mud?
(a) Fan of the anode
(b) Metal of anode
(c) Impurities collected at the anode in electrolysis during the purification of metals
(d) All of these
Option c – Impurities collected at the anode in electrolysis during the purification of metals
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
German silver is used to make decorative articles, coinage metal, and ornaments, The name was given because :
(a) it is an alloy of copper and contains silver as one of its components
(b) Germans were the first to use silver
(c) Its appearance is like silver
(d) It is an alloy of silver
Option c – Its appearance is like silver
Zinc is used to protect iron from corrosion because zinc is
(a) more electropositive than iron
(b) cheaper than iron
(c) a bluish-white metal
(d) a good conductor of heat and electricity
Option a – more electropositive than iron
Metals above hydrogen in activity series
(a) React with acids to liberate hydrogen ions
(b) React with acids to liberate hydrogen gas
(c) React with water at ordinary temperature
(d) None of these
Option b – React with acids to liberate hydrogen gas
Carnallite is the mineral of
(a) Na
(b) Ca
(c) Mg
(d) All of these
Option c – Mg
Which oxide is neutral?
(a) NO2
(b) MgO
(c) H₂O
(d) None of these
Option c – H₂O
Which of the following is a transition element?
(a) Pb
(b) As
(c) Al
(d) Ni
Option d – Ni
The metal which is harder and corrosion resistant is :
(a) nickel
(b) iron
(c) platinum
(d) tungsten
Option d – tungsten
The lightest liquid metal is :
(a) Hg
(b) Ga
(c) Cs
(d) Fr
Option c – Cs
Which observation most strongly suggests that a solid element X is a non-metal?
(a) X forms an acidic oxide.
(b) X has a high melting point.
(c) X is a conductor of electricity.
(d) X reacts vigorously with chlorine.
Option a – X forms an acidic oxide
Why is aluminium a suitable material for building air crafts?
(a) It is a good conductor of heat.
(b) It has a high melting point.
(c) It is shiny
(d) It is light and does not rust easily.
Option d – It is light and does not rust easily
Which of the following metals cannot be reduced by carbon?
(a) Magnesium
(b) Iron
(c) Zinc
(d) Lead
Option a – Magnesium
Solder is an alloy of
(a) Cu + Zn
(b) Pb + Sn
(c) Pb + Sb
(d) Cu + Sn
Option b – Pb + Sn
Pick up the odd one out.
(a) Air
(b) Brass
(c) A crystal of green vitriol
(d) Gunpowder
Option a – Air
Brass is an alloy of
(a) copper and iron
(b) zinc and iron
(c) copper and zinc
(d) iron and nickel
Option c – copper and zinc
Which pair of the following is of Copper alloys?
(a) Brass and invar
(b) Bronze and Nichrome
(c) Brass and Bronze
(d) None of the above
Option c – Brass and Bronze
German silver is an alloy of
(a) gold and silver
(b) copper and silver
(c) copper, zinc and silver
(d) copper, zinc and nickel
Option d – copper, zinc and nickel
The valency of phosphorus is
(a) 2,3
(b) 3,4
(c) 4,5
(d) 3,5
Option d – 3,5
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