Which property is common to all metals?
a) Poor conductivity of heat
b) Malleability and ductility
c) Brittle nature
d) Low melting points
Which of the following is a non-metal?
a) Iron
b) Copper
c) Sulfur
d) Aluminum
Which metal is the best conductor of electricity?
a) Iron
b) Silver
c) Aluminum
d) Zinc
Which non-metal is a good conductor of electricity?
a) Oxygen
b) Carbon (Graphite)
c) Sulfur
d) Phosphorus
Which metal is the lightest?
a) Iron
b) Mercury
c) Lithium
d) Copper
Which property is most characteristic of non-metals?
a) High density
b) High tensile strength
c) Low boiling points
d) Good electrical conductivity
Which non-metal exists as a liquid at room temperature?
a) Chlorine
b) Bromine
c) Iodine
d) Nitrogen
Which metal is used in making aircraft due to its low density?
a) Iron
b) Aluminum
c) Gold
d) Lead
Which of the following is the hardest naturally occurring substance?
a) Graphite
b) Diamond
c) Quartz
d) Iron
Which non-metal is essential for respiration?
a) Nitrogen
b) Oxygen
c) Carbon
d) Hydrogen
Which metal is found in liquid form at room temperature?
a) Silver
b) Mercury
c) Lead
d) Zinc
Which of the following non-metals is used in making fertilizers?
a) Phosphorus
b) Carbon
c) Silicon
d) Neon
Which metal is highly reactive with water?
a) Copper
b) Gold
c) Sodium
d) Silver
Which non-metal is used to disinfect drinking water?
a) Oxygen
b) Nitrogen
c) Chlorine
d) Hydrogen
Which of the following metals is the most malleable?
a) Iron
b) Gold
c) Zinc
d) Aluminum
Which of these elements is a metalloid?
a) Silicon
b) Magnesium
c) Lead
d) Neon
Which metal is the most ductile?
a) Copper
b) Gold
c) Iron
d) Lead
Which gas is commonly used in balloons due to its low density?
a) Oxygen
b) Hydrogen
c) Helium
d) Nitrogen
Which metal is highly resistant to corrosion?
a) Iron
b) Aluminum
c) Gold
d) Copper
Which of these non-metals is used in the making of semiconductors?
a) Sulfur
b) Phosphorus
c) Silicon
d) Carbon
Which metal is used in thermometers?
a) Silver
b) Mercury
c) Iron
d) Zinc
Which non-metal is used in making matchsticks?
a) Carbon
b) Phosphorus
c) Sulfur
d) Hydrogen
Which of the following metals is most commonly used in electrical wiring?
a) Aluminum
b) Copper
c) Iron
d) Zinc
Which of the following metals is an alkali metal?
a) Magnesium
b) Calcium
c) Sodium
d) Zinc
Which non-metal is used in making soft lead pencils?
a) Phosphorus
b) Carbon
c) Sulfur
d) Silicon
Which of the following metals reacts most violently with cold water?
a) Copper
b) Sodium
c) Iron
d) Gold
Which non-metal is used to make bulletproof glass?
a) Boron
b) Sulfur
c) Chlorine
d) Neon
Which of the following non-metals is used in the purification of water?
a) Fluorine
b) Chlorine
c) Carbon
d) Oxygen
Which of the following metals is a transition metal?
a) Sodium
b) Iron
c) Aluminum
d) Magnesium
Which non-metal is used to make rubber tires more durable?
a) Phosphorus
b) Sulfur
c) Carbon
d) Oxygen
