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Chemistry

Chemistry
DDT and BHC may act as

Carcinogens
Asthematic agents
None of these
Allergens

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Chemistry
Tar roads get damaged if there is

Stagnation of water on road
Heavy traffic
No maintenance
No sloping

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Chemistry
Nitrogen fixation is a process of

Conversion of organic nitrogen to proteins
Utilisation of nitrogen gas
Conversion of molecular nitrogen to ammonia
Assimilation of nitrate

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Chemistry
The material used in solar cells contains

Thallium
Caesium
Tin
Silicon

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Chemistry
The chemical bahaviour of an atom depends upon

The number of protons in its nucleus
The number of nucleons in the nucleus
The number of neutrons in the nucleus
The number of electrons orbiting around the nucleus

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Chemistry
White lung cancer' is caused by

Silica
Asbestos
Textiles
Paper

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MORE MCQ ON Chemistry

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