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TOPIC: Quiz 8: General Science

Quiz 8: General Science 4 years 2 months ago #713

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Q1: Brass gets discolored in air because of the presence of which of the following gases in air?
A. Oxygen
B. Carbon Dioxide
C. Hydrogen Sulphide
D. Nitrogen
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Q2: Chlorophyll is a naturally occurring chelate compound in which central metal is
A. Iron
B. Calcium
C. Copper
D. Magnesium
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Q3: Which of the following is used in pencils?
A. Graphite
B. Charcoal
C. Silicon
D. Phosphorus
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Q4: Which of the following metals forms an amalgam with other metals?
A. Zinc
B. Mercury
C. Tin
D. Lead
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Q5: Which of the following is a non metal that remains liquid at room temperature?
A. Chlorine
B. Bromine
C. Helium
D. Phosphorous
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Q6: The gas usually filled in the electric bulb is
A. Oxygen
B. Hydrogen
C. Nitrogen
D. Carbon Dioxide
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Q7: Washing soda is the common name for
A. Sodium Carbonate
B. Sodium Bicarbonate
C. Calcium Carbonate
D. Calcium Bicarbonate
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Q8: Quartz crystals normally used in quartz clocks etc. is chemically
A. Sodium Silicate
B. Silicon Dioxide
C. Germanium Oxide
D. Mixture of B and C
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Q9: Which of the gas is not known as green house gas?
A. Methane
B. Nitrous Oxide
C. Carbon Dioxide
D. Hydrogen
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Q10: Bromine is a
A. Black solid
B. Red Liquid
C. Colorless Gas
D. Highly inflammable gas
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Last Edit: 4 years 2 months ago by eduAmigo1.
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