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Chemistry

Chemistry
DDT and BHC may act as

Asthematic agents
None of these
Carcinogens
Allergens

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Chemistry
Diamond is harder than graphite because of :

Difference of crystalline structures
Tetrahedral structure of diamond
None of these
Difference in layers of atoms

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Chemistry
When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to

SO2
N2O
NO2
SO3

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Chemistry
Which one is not a primary greenhouse gases in the Earth's atmosphere

Nitrogen
Methane
Ozone
Carbon dioxide

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Chemistry
The fundamental particles present in the nucleus of an atom are

Proton, neutron
Electron, proton
Neutron, positron
Neutron, electron

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Chemistry
Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ?

Eutrophication
Alkalinity
Hardness
Acidity

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MORE MCQ ON Chemistry

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