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Chemistry

Chemistry
Which one of the following is not present in cement ?

Gypsum
Clay
Alumina
Alum

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Chemistry
Which one of the following group of gases contributes to the 'Green House Effect'?

Carbon monoxide and Sulphur dioxide
Ammonia and Ozone
Carbon dioxide and Methane
Carbon tetraflouride and Nitrous oxide

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Chemistry
Which of the following laser types is used in a laser printer?

Dye laser
Excimer laser
Semiconductor laser
Gas laser

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Chemistry
The chemical name of baking soda is

Sodium nitrate
Sodium chloride
Sodium carbonate
Sodium bicarbonate

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Chemistry
The material used in the manufacture of lead pencil is

Carbon
Graphite
Lead
Mica

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Chemistry
The most abundant element in the human body is

Oxygen
Carbon
Iron
Nitrogen

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MORE MCQ ON Chemistry

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