Exercise: General Science

Questions for: General Science

Which of the following is used in pencils?
A:
Graphite
B:
Silicon
C:
Charcoal
D:
Phosphorous
Answer: A
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Chlorophyll is a naturally occurring chelate compound in which central metal is
A:
copper
B:
magnesium
C:
iron
D:
calcium
Answer: B
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Which of the following is a non metal that remains liquid at room temperature?
A:
Phosphorous
B:
Bromine
C:
Chlorine
D:
Helium
Answer: B
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Brass gets discoloured in air because of the presence of which of the following gases in air?
A:
Oxygen
B:
Hydrogen sulphide
C:
Carbon dioxide
D:
Nitrogen
Answer: B
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