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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 is not a step used in the extraction of iron?
(a) Calcination
(b) Smelting
(c) Ore concentration
(d) None of these
Option a – Calcination
Why is aluminium used in the thermite welding process?
(a) It is lightweight
(b) It shows strong attraction for oxygen
(c) It acts as a strong oxidiser
(d) It is a reactive element
Option b – It shows strong attraction for oxygen
Magnalium is an alloy made of which Metals?
(a) Aluminium and copper
(b) Aluminium and iron
(c) Aluminium and magnesium
(d) Aluminium and manganese
Option c – Aluminium and magnesium
Electrolytic reduction is applied for extracting:
(a) Metals that are highly electropositive
(b) Elements classified as metalloids
(c) Metals with low reactivity
(d) Transition Metals
Option a – Metals that are highly electropositive
Which metal below is not commonly used as a reducing agent in smelting?
(a) Carbon
(b) Aluminium
(c) Zinc
(d) None of these
Option d – None of these
Graphite is categorized as a:
(a) Alloy
(b) Metal
(c) Metalloid
(d) Non-metal
Option a – Alloy
The primary ore used to extract aluminium is:
(a) Bauxite
(b) Cryolite
(c) Alunite
(d) Feldspar
Option a – Bauxite
Which of the following elements lacks the presence of allotropes?
(a) Oxygen
(b) Sulphur
(c) Nitrogen
(d) Carbon
Option c – Nitrogen
Identify the option that is not an allotrope of carbon:
(a) Coal
(b) Diamond
(c) Graphite
(d) Graphene
Option d – Graphene
What causes temporary hardness in water involving calcium and magnesium?
(a) Hydrogencarbonates
(b) Carbonates
(c) Chlorides
(d) Sulphates
Option a – Hydrogencarbonates
Among the following, which element forms the most chemical compounds?
(a) Oxygen
(b) Hydrogen
(c) Chlorine
(d) Carbon
Option d – Carbon
Pencil leads are primarily composed of:
(a) Zinc
(b) Lead
(c) Graphite (a form of carbon)
(d) Tin
Option c – Graphite (a form of carbon)
The process of eliminating impurities from an ore is known as:
(a) Grinding and crushing
(b) Ore concentration
(c) Calcination
(d) Roasting
Option b – Ore concentration
Froth flotation is a technique mainly used to concentrate:
(a) Oxide-based ores
(b) Sulphide-based ores
(c) Sulphate ores
(d) Halide ores
Option b – Sulphide-based ores
What is an effective method to prevent an iron pan from rusting?
(a) Applying grease
(b) Applying paint
(c) Coating with zinc
(d) All of the above
Option c – Coating with zinc
Aluminium resists oxidation in air mainly because:
(a) It is high on the electrochemical series
(b) It is low on the electrochemical series
(c) It does not react with oxygen
(d) It forms a protective oxide layer that remains intact
Option d – It forms a protective oxide layer that remains intact
When iron filings are heated in dry hydrogen chloride gas, the product formed is FeClₓ. What is the value of ‘x’?
(a) 1
(b) 2
(c) 3
(d) 4
Option b – 2
A naturally occurring compound from which a metal can be extracted profitably is called:
(a) Slag
(b) Gangue
(c) Ore
(d) Mineral
Option c – Ore
Heating an ore below its melting point in the presence of excess air is referred to as:
(a) Roasting
(b) Calcination
(c) Smelting
(d) Liquation
Option a – Roasting
Mercury is a component of which of the following mixtures?
(a) Aluminium
(b) Copper
(c) Iron
(d) Amalgam
Option d – Amalgam
Which process is used to purify metals?
(a) Froth flotation
(b) Electrolytic refining
(c) Magnetic separation
(d) Gravity method
Option b – Electrolytic refining
What is meant by anode mud?
(a) Part of the anode structure
(b) The metal forming the anode
(c) Impurities that settle at the anode during electrolysis
(d) All of the above
Option c – Impurities that settle at the anode during electrolysis
Why are Food containers coated with tin instead of zinc?
(a) Tin is more expensive than zinc
(b) Tin has a lower melting point than zinc
(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 in ornamental objects and coins because:
(a) It contains copper and silver
(b) Silver was first used in Germany
(c) It resembles silver in appearance
(d) It is made from silver
Option c – It resembles silver in appearance
Zinc helps prevent rusting of iron because it is:
(a) More electropositive than iron
(b) Less expensive than iron
(c) A bluish-white metal
(d) A good conductor of Electricity and Heat
Option a – More electropositive than iron
Elements positioned above hydrogen in the reactivity series:
(a) Release hydrogen ions when reacting with Acids
(b) Release hydrogen gas when reacting with Acids
(c) React with water at room temperature
(d) None of the above
Option b – Release hydrogen gas when reacting with Acids
Carnallite is an important source of:
(a) Sodium
(b) Calcium
(c) Magnesium
(d) All of the above
Option c – Magnesium
Which oxide behaves as a neutral compound?
(a) NO₂
(b) Magnesium oxide
(c) Water (H₂O)
(d) None of these
Option c – Water (H₂O)
Identify the transition metal from the list below:
(a) Lead
(b) Arsenic
(c) Aluminium
(d) Nickel
Option d – Nickel
Which of these metals is known for being extremely hard and resistant to corrosion?
(a) Nickel
(b) Iron
(c) Platinum
(d) Tungsten
Option d – Tungsten
Which of the following is the lightest liquid metal?
(a) Mercury
(b) Gallium
(c) Caesium
(d) Francium
Option c – Caesium
Which observation most clearly indicates that element X is a non-metal?
(a) X forms an acidic oxide
(b) X has a high melting point
(c) X can conduct Electricity
(d) X reacts quickly with chlorine
Option a – X forms an acidic oxide
Why is aluminium a preferred material for manufacturing aircraft?
(a) It is a good Heat conductor
(b) It melts at a high temperature
(c) It has a shiny surface
(d) It is lightweight and resists corrosion
Option d – It is lightweight and resists corrosion
Which of these metals cannot be extracted using carbon as a reducing agent?
(a) Magnesium
(b) Iron
(c) Zinc
(d) Lead
Option a – Magnesium
Solder is a combination of:
(a) Copper and zinc
(b) Lead and tin
(c) Lead and antimony
(d) Copper and tin
Option b – Lead and tin
Identify the substance that is different from the rest:
(a) Air
(b) Brass
(c) Green vitriol crystal
(d) Gunpowder
Option a – Air
Brass is composed of:
(a) Copper and iron
(b) Zinc and iron
(c) Copper and zinc
(d) Iron and nickel
Option c – Copper and zinc
Which of the following consists of copper-based 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 a mixture 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
What is the valency of phosphorus?
(a) 2, 3
(b) 3, 4
(c) 4, 5
(d) 3, 5
Option d – 3, 5
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