Online Test — Metals and Non-metals
25 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 25
The property of a metal that allows it to be drawn into thin wires is called:
Malleability
Ductility
Sonorousness
Lustre
Explanation: Ductility is the property of being drawn into wires; malleability is being beaten into sheets.
Question 2 of 25
Most non-metals are ______ of heat and electricity.
Good conductors
Poor conductors
Superconductors
Sonorous carriers
Explanation: Most non-metals are poor conductors (insulators) of heat and electricity.
Question 3 of 25
The only metal that is liquid at room temperature is:
Iron
Mercury
Copper
Sodium
Explanation: Mercury is the only metal that is liquid at room temperature.
Question 4 of 25
The ringing sound produced by metals when struck is due to the property called:
Ductility
Lustre
Sonorousness
Malleability
Explanation: Producing a ringing sound on being struck is the property of sonorousness.
Question 5 of 25
Which non-metal is a good conductor of electricity?
Sulphur
Graphite
Oxygen
Phosphorus
Explanation: Graphite, a form of carbon, is an unusual non-metal that conducts electricity.
Question 6 of 25
When a metal reacts with oxygen, it forms a metal oxide that is generally:
Acidic
Basic
Neutral
A gas
Explanation: Metal oxides are generally basic, turning red litmus blue.
Question 7 of 25
Very reactive metals like sodium and potassium are stored under:
Water
Kerosene oil
Dilute acid
Open air
Explanation: Kerosene keeps air and moisture away from these violently reactive metals.
Question 8 of 25
Most metals react with dilute acids to release the gas:
Oxygen
Carbon dioxide
Hydrogen
Nitrogen
Explanation: Metals react with dilute acids to form a salt and release hydrogen gas.
Question 9 of 25
Hydrogen gas is identified by the sound it makes with a burning splint, which is a:
Hiss
Pop
Bang only
Whistle
Explanation: Hydrogen burns with a characteristic "pop" sound near a lit splint.
Question 10 of 25
The arrangement of metals in order of their reactivity is called the:
Periodic table
Reactivity series
Litmus scale
pH scale
Explanation: The reactivity series lists metals from most reactive to least reactive.
Question 11 of 25
Oxides of non-metals are generally:
Basic
Acidic
Metallic
Neutral always
Explanation: Non-metal oxides are generally acidic, turning blue litmus red.
Question 12 of 25
Compared with metals, non-metals usually react with dilute acids:
Violently
Very little or not at all
To release oxygen
To form bases
Explanation: Non-metals generally do not react with dilute acids, unlike metals.
Question 13 of 25
Elements with properties between metals and non-metals are called:
Alloys
Metalloids
Salts
Halogens
Explanation: Metalloids have intermediate properties between metals and non-metals.
Question 14 of 25
Which of these is a metalloid widely used in electronics?
Iron
Silicon
Sulphur
Copper
Explanation: Silicon is a metalloid and semiconductor used in electronic chips.
Question 15 of 25
In reactions, non-metals tend to ______ electrons.
Lose
Gain
Destroy
Ignore
Explanation: Non-metals tend to gain electrons, forming negative ions, unlike metals.
Question 16 of 25
An alloy is a homogeneous mixture of two or more:
Non-metals only
Metals (or a metal with a non-metal)
Gases
Acids
Explanation: An alloy mixes two or more metals, or a metal with a small amount of a non-metal.
Question 17 of 25
Steel is an alloy of iron and:
Zinc
Carbon
Copper
Tin
Explanation: Steel is iron with a small amount of carbon added, making it strong.
Question 18 of 25
Brass is an alloy of copper and:
Tin
Carbon
Zinc
Nickel
Explanation: Brass is made of copper and zinc.
Question 19 of 25
Which alloy is highly resistant to rusting and used for cutlery?
Bronze
Brass
Stainless steel
Pure iron
Explanation: Stainless steel (iron + chromium + nickel) resists rusting and is used for cutlery.
Question 20 of 25
Compared with pure metals, alloys are usually:
Softer and weaker
Harder and stronger
Less durable
More easily rusted
Explanation: Alloys are generally harder, stronger, and more corrosion-resistant than pure metals.
Question 21 of 25
The gradual eating away of a metal by air, moisture, and chemicals is called:
Crystallisation
Corrosion
Galvanisation
Neutralisation
Explanation: Corrosion is the slow eating away of a metal by its surroundings.
Question 22 of 25
The black coating that forms on silver over time is due to:
Rusting
Tarnishing
Galvanising
Plating
Explanation: Silver tarnishes black by reacting with sulphur compounds in the air.
Question 23 of 25
Coating iron with a layer of zinc to prevent corrosion is called:
Electroplating
Galvanisation
Painting
Alloying
Explanation: Galvanisation is coating iron with zinc to prevent corrosion.
Question 24 of 25
Depositing a thin layer of a less reactive metal using electricity is called:
Galvanisation
Electroplating
Tarnishing
Crystallisation
Explanation: Electroplating uses electricity to deposit a protective metal layer.
Question 25 of 25
Which of the following resists corrosion because of added chromium and nickel?
Pure iron
Stainless steel
Pure copper
Pure silver
Explanation: Stainless steel resists corrosion due to the chromium and nickel it contains.