Metals and Non Metals

Which of the following is the most malleable metal?
a) Iron
b) Aluminium
c) Gold
d) Zinc
Answer: c) Gold
Which metal is a liquid at room temperature?
a) Mercury
b) Sodium
c) Potassium
d) Lead
Answer: a) Mercury
What property allows metals to be drawn into wires?
a) Malleability
b) Ductility
c) Conductivity
d) Hardness
Answer: b) Ductility
The oxide of which element is amphoteric?
a) Sodium
b) Zinc
c) Calcium
d) Silver
Answer: b) Zinc
Why is sodium stored in kerosene?
a) It is very dense.
b) It reacts vigorously with air and water.
c) It is non-reactive.
d) It is malleable.
Answer: b) It reacts vigorously with air and water.
Which gas is produced when a metal reacts with dilute hydrochloric acid?
a) Oxygen
b) Hydrogen
c) Nitrogen
d) Carbon dioxide
Answer: b) Hydrogen
Which of the following metals will not displace hydrogen from acids?
a) Copper
b) Iron
c) Zinc
d) Aluminium
Answer: a) Copper
What is the chemical formula of rust?
a) FeO
b) Fe₂O₃
c) Fe₂O₃·xH₂O
d) FeO·H₂O
Answer: c) Fe₂O₃·xH₂O
Which metal reacts vigorously with water to form a hydroxide and hydrogen gas?
a) Aluminium
b) Sodium
c) Iron
d) Lead
Answer: b) Sodium
Why are electric wires coated with PVC?
a) To enhance conductivity
b) To insulate them
c) To reduce cost
d) To prevent melting
Answer: b) To insulate them
Which of the following non-metals is a good conductor of electricity?
a) Carbon (Graphite)
b) Sulphur
c) Phosphorus
d) Oxygen
Answer: a) Carbon (Graphite)
The reaction of a metal with steam produces:
a) Metal hydroxide and hydrogen
b) Metal oxide and hydrogen
c) Metal carbonate and water
d) Hydrogen and oxygen
Answer: b) Metal oxide and hydrogen
What is aqua regia?
a) A mixture of HCl and HNO₃ in 3:1 ratio
b) A mixture of H₂SO₄ and HNO₃
c) A concentrated solution of NaOH
d) None of the above
Answer: a) A mixture of HCl and HNO₃ in 3:1 ratio
Which is the least reactive metal in the reactivity series?
a) Zinc
b) Copper
c) Silver
d) Gold
Answer: d) Gold
The reaction of aluminium with iron(III) oxide produces molten iron. This reaction is known as:
a) Rusting
b) Thermit reaction
c) Electrolysis
d) Calcination
Answer: b) Thermit reaction
Which metal is used for galvanisation of iron?
a) Zinc
b) Copper
c) Aluminium
d) Lead
Answer: a) Zinc
What kind of oxides do non-metals form?
a) Basic oxides
b) Acidic oxides
c) Neutral oxides
d) Both b and c
Answer: d) Both b and c
Which is the best conductor of heat among metals?
a) Copper
b) Aluminium
c) Silver
d) Gold
Answer: c) Silver
What are alloys?
a) Pure forms of metals
b) Mixtures of metals with non-metals
c) Compounds of metals
d) None of the above
Answer: b) Mixtures of metals with non-metals
Which metal does not corrode easily?
a) Aluminium
b) Gold
c) Zinc
d) Iron
Answer: b) Gold
Which of the following metals is most reactive?
a) Iron
b) Aluminium
c) Potassium
d) Zinc
Answer: c) Potassium
The ability of metals to produce a ringing sound is called:
a) Malleability
b) Ductility
c) Sonority
d) Lustre
Answer: c) Sonority
Which non-metal is used in the purification of water?
a) Chlorine
b) Carbon
c) Iodine
d) Sulphur
Answer: a) Chlorine
Which non-metal exists as a liquid at room temperature?
a) Bromine
b) Fluorine
c) Iodine
d) Chlorine
Answer: a) Bromine
Which of the following metals reacts vigorously with cold water?
a) Magnesium
b) Zinc
c) Potassium
d) Iron
Answer: c) Potassium
What type of oxides are formed by metals?
a) Acidic
b) Neutral
c) Basic
d) Both acidic and basic
Answer: c) Basic
Which of the following metals is used for making electrical wires?
a) Aluminium
b) Copper
c) Zinc
d) Lead
Answer: b) Copper
Which process is used to coat iron with a layer of zinc?
a) Alloying
b) Galvanisation
c) Anodising
d) Painting
Answer: b) Galvanisation
Non-metals form negatively charged ions because:
a) They lose electrons
b) They gain electrons
c) They share electrons
d) They donate protons
Answer: b) They gain electrons
Which element is commonly used in making jewellery due to its lustre?
a) Copper
b) Aluminium
c) Gold
d) Zinc
Answer: c) Gold
The least reactive element among the following is:
a) Iron
b) Silver
c) Aluminium
d) Sodium
Answer: b) Silver
Which of these metals can displace hydrogen from acids?
a) Copper
b) Gold
c) Zinc
d) Silver
Answer: c) Zinc
The process of forming a thick protective oxide layer on aluminium is called:
a) Galvanisation
b) Electrolysis
c) Anodising
d) Roasting
Answer: c) Anodising
Which metal is extracted by the thermit process?
a) Zinc
b) Copper
c) Iron
d) Gold
Answer: c) Iron
Which compound is used as an electrolyte in the electrolytic refining of copper?
a) Copper hydroxide
b) Copper sulphate
c) Copper chloride
d) Zinc nitrate
Answer: b) Copper sulphate
Which of the following is a property of ionic compounds?
a) High boiling points
b) Poor conductor of electricity in the molten state
c) Low melting points
d) Soluble in petrol
Answer: a) High boiling points
Metals are generally:
a) Poor conductors of heat
b) Non-sonorous
c) Hard and dense
d) Non-malleable
Answer: c) Hard and dense
Which metal does not react with water at all?
a) Zinc
b) Sodium
c) Aluminium
d) Gold
Answer: d) Gold
Which of the following is a displacement reaction?
a) Zn + CuSO₄ → ZnSO₄ + Cu
b) HCl + NaOH → NaCl + H₂O
c) Fe + O₂ → Fe₂O₃
d) Mg + HCl → MgCl₂ + H₂
Answer: a) Zn + CuSO₄ → ZnSO₄ + Cu
Metals placed high in the reactivity series are extracted by:
a) Heating with carbon
b) Electrolytic reduction
c) Roasting
d) Anodising
Answer: b) Electrolytic reduction
Which of these metals is refined using electrolytic refining?
a) Zinc
b) Copper
c) Lead
d) Sodium
Answer: b) Copper
What is the role of carbon in the extraction of metals like zinc?
a) Oxidising agent
b) Reducing agent
c) Catalyst
d) Electrolyte
Answer: b) Reducing agent
Which metal is commonly used to make utensils for cooking?
a) Lead
b) Aluminium
c) Copper
d) Both b and c
Answer: d) Both b and c
Which of the following metals is not found in a free state in nature?
a) Gold
b) Copper
c) Sodium
d) Silver
Answer: c) Sodium
In the reactivity series, hydrogen is placed:
a) Above potassium
b) Below silver
c) Between zinc and copper
d) Between calcium and sodium
Answer: c) Between zinc and copper
What is the major impurity in the refining of copper called?
a) Gangue
b) Anode mud
c) Slag
d) Ore
Answer: b) Anode mud
Which reaction is used to join broken railway tracks?
a) Roasting
b) Thermit reaction
c) Calcination
d) Galvanisation
Answer: b) Thermit reaction
Which element forms the hardest natural substance?
a) Aluminium
b) Iron
c) Carbon
d) Silicon
Answer: c) Carbon
Which of these is an example of an ionic compound?
a) Water (H₂O)
b) Sodium chloride (NaCl)
c) Methane (CH₄)
d) Carbon dioxide (CO₂)
Answer: b) Sodium chloride (NaCl)
Which non-metal is used in the manufacture of matches?
a) Sulphur
b) Iodine
c) Carbon
d) Chlorine
Answer: a) Sulphur
Anodising is commonly done on which metal?
a) Copper
b) Zinc
c) Aluminium
d) Lead
Answer: c) Aluminium
What is the melting point of ionic compounds typically like?
a) High
b) Low
c) Moderate
d) Cannot be determined
Answer: a) High
Why do alkali metals like sodium and potassium react violently with water?
a) They have high melting points.
b) They release hydrogen gas.
c) They are ductile.
d) They are brittle.
Answer: b) They release hydrogen gas.
Which of the following metals is the least reactive?
a) Calcium
b) Sodium
c) Silver
d) Magnesium
Answer: c) Silver
What is rust chemically?
a) Fe₃O₄
b) Fe₂O₃·xH₂O
c) FeO
d) Fe₂O
Answer: b) Fe₂O₃·xH₂O
What is the primary component of an alloy called brass?
a) Copper and zinc
b) Copper and tin
c) Iron and carbon
d) Aluminium and magnesium
Answer: a) Copper and zinc
Which property of metals is responsible for the production of sound when struck?
a) Conductivity
b) Sonority
c) Malleability
d) Ductility
Answer: b) Sonority
Which is the most ductile metal?
a) Aluminium
b) Copper
c) Gold
d) Zinc
Answer: c) Gold
Which non-metal is used to disinfect water?
a) Sulphur
b) Chlorine
c) Carbon
d) Iodine
Answer: b) Chlorine
What is the primary impurity removed during the electrolytic refining of copper?
a) Zinc
b) Lead
c) Anode mud
d) Carbon
Answer: c) Anode mud
Which metal is used for making filaments in light bulbs?
a) Aluminium
b) Tungsten
c) Copper
d) Iron
Answer: b) Tungsten
Metals that react with acids produce:
a) Hydrogen gas
b) Oxygen gas
c) Carbon dioxide
d) Chlorine gas
Answer: a) Hydrogen gas
Which of these alloys contains mercury?
a) Bronze
b) Solder
c) Amalgam
d) Brass
Answer: c) Amalgam
Which method is used to prevent rusting of iron?
a) Painting
b) Greasing
c) Galvanisation
d) All of the above
Answer: d) All of the above
Which gas is evolved when zinc reacts with hydrochloric acid?
a) Hydrogen
b) Oxygen
c) Nitrogen
d) Carbon dioxide
Answer: a) Hydrogen
What is the process of heating ore in the presence of oxygen called?
a) Roasting
b) Calcination
c) Anodising
d) Refining
Answer: a) Roasting
Which non-metal is a good conductor of electricity?
a) Sulphur
b) Phosphorus
c) Graphite
d) Hydrogen
Answer: c) Graphite
What is the green coating on copper vessels called?
a) Copper nitrate
b) Basic copper carbonate
c) Copper chloride
d) Copper hydroxide
Answer: b) Basic copper carbonate
What is aqua regia capable of dissolving?
a) Aluminium and iron
b) Gold and platinum
c) Zinc and silver
d) Copper and mercury
Answer: b) Gold and platinum
Which property of ionic compounds allows them to conduct electricity in water?
a) Covalent bonding
b) Presence of free ions
c) High melting points
d) Brittle nature
Answer: b) Presence of free ions
Which is the major metal used in stainless steel?
a) Copper
b) Aluminium
c) Iron
d) Lead
Answer: c) Iron
Which of these oxides is amphoteric?
a) Zinc oxide
b) Magnesium oxide
c) Iron oxide
d) Calcium oxide
Answer: a) Zinc oxide
Which gas is responsible for the tarnishing of silver?
a) Oxygen
b) Carbon dioxide
c) Sulphur dioxide
d) Hydrogen sulphide
Answer: d) Hydrogen sulphide
Which non-metal is used in the production of fertilizers?
a) Phosphorus
b) Chlorine
c) Sulphur
d) Fluorine
Answer: a) Phosphorus
Why is gold preferred for making jewellery?
a) High malleability and ductility
b) High density
c) Low cost
d) High reactivity
Answer: a) High malleability and ductility
Which of the following metals does not react with acids?
a) Zinc
b) Copper
c) Iron
d) Aluminium
Answer: b) Copper
Which of the following is the primary metal in bronze?
a) Aluminium
b) Tin
c) Copper
d) Zinc
Answer: c) Copper
The rusting of iron requires:
a) Only water
b) Only oxygen
c) Both water and oxygen
d) Neither water nor oxygen
Answer: c) Both water and oxygen
Which of the following alloys is used for soldering?
a) Bronze
b) Brass
c) Solder (tin and lead)
d) Amalgam
Answer: c) Solder (tin and lead)
Why is magnesium used in fireworks?
a) High reactivity
b) High melting point
c) Bright white flame
d) Low cost
Answer: c) Bright white flame
Which metal is commonly used in batteries?
a) Lead
b) Copper
c) Zinc
d) Aluminium
Answer: a) Lead
Which process involves heating carbonate ores in the absence of air?
a) Roasting
b) Calcination
c) Refining
d) Galvanisation
Answer: b) Calcination
Why are metals used for making cooking utensils?
a) High melting points
b) Good conductors of heat
c) Non-reactive with food
d) All of the above
Answer: d) All of the above
Which gas is evolved when calcium reacts with water?
a) Oxygen
b) Hydrogen
c) Nitrogen
d) Carbon dioxide
Answer: b) Hydrogen
Which type of bonding exists in ionic compounds?
a) Covalent bonding
b) Electrovalent bonding
c) Metallic bonding
d) Van der Waals bonding
Answer: b) Electrovalent bonding
What is the chemical formula of aluminium oxide?
a) AlO
b) Al₂O₃
c) Al₂O
d) Al₃O₂
Answer: b) Al₂O₃
Which of these metals does not corrode easily?
a) Aluminium
b) Silver
c) Zinc
d) Iron
Answer: b) Silver
Why is sodium not used to make coins?
a) It is too soft
b) It is too expensive
c) It is unreactive
d) It is too heavy
Answer: a) It is too soft
Which non-metal is used in the vulcanisation of rubber?
a) Carbon
b) Sulphur
c) Phosphorus
d) Fluorine
Answer: b) Sulphur
Which element forms a bright red oxide when exposed to air?
a) Copper
b) Iron
c) Zinc
d) Aluminium
Answer: a) Copper
Why is galvanisation preferred over painting?
a) Zinc offers sacrificial protection.
b) It is cheaper.
c) It is easier to apply.
d) It is environmentally friendly.
Answer: a) Zinc offers sacrificial protection.
Which metal reacts violently with dilute acids?
a) Calcium
b) Magnesium
c) Potassium
d) Zinc
Answer: c) Potassium
Why is graphite used in pencils?
a) High hardness
b) High melting point
c) Slippery nature
d) Conductivity
Answer: c) Slippery nature
What is the chemical formula of magnesium hydroxide?
a) MgOH
b) Mg₂OH
c) Mg(OH)₂
d) Mg₂O₂
Answer: c) Mg(OH)₂
Which method is used to prevent the rusting of iron?
a) Painting
b) Greasing
c) Galvanisation
d) All of the above
Answer: d) All of the above
Which of the following metals is least dense?
a) Aluminium
b) Lithium
c) Gold
d) Copper
Answer: b) Lithium
What is the role of cryolite in the extraction of aluminium?
a) Reduces melting point of alumina
b) Acts as a reducing agent
c) Protects aluminium from oxidation
d) Acts as a catalyst
Answer: a) Reduces melting point of alumina
Which non-metal is used in the production of explosives?
a) Sulphur
b) Phosphorus
c) Nitrogen
d) Chlorine
Answer: c) Nitrogen
Which metal does not react with water at all?
a) Copper
b) Sodium
c) Calcium
d) Magnesium
Answer: a) Copper
Which gas is liberated in the thermit reaction?
a) Oxygen
b) Nitrogen
c) Hydrogen
d) No gas
Answer: d) No gas