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Chemistry

Chemistry
DDT and BHC may act as

Carcinogens
Asthematic agents
Allergens
None of these

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Chemistry
The gas dissolved in water that makes it basic is :

Hydrogen
Sulphur dioxide
Ammonia
Carbon dioxide

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Chemistry
The National Chemical Laboratory is situated in

Bangalore
Patna
New Delhi
Pune

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

Semiconductor laser
Dye laser
Excimer laser
Gas laser

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Chemistry
Iron is extracted from

Cinnabar
Bauxite
Dolomite
Haematite

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Chemistry
Brass is a

Heterogeneous mixture
Compound
Element
Homogeneous mixture

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MORE MCQ ON Chemistry

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