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Chemistry

Chemistry
DDT and BHC may act as

Allergens
None of these
Carcinogens
Asthematic agents

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Chemistry
PVC is obtained by the polymerisation of

Vinyl chloride
Styrene
Acetylene
Propane

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Chemistry
'All the four quantum numbers of two electrons in an atom are not the same.' It is the law of –

Uncertainty Principle of Hiesenberg
Hund's rule of maximum multiplicity
Avogadro's Law
Exclusion Principle of Pauli

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Chemistry
Wax used for making candle is chemically a mixture of

Aliphatic and aromatic hydrocarbons
Aliphatic hydrocarbons
Aromatic hydrocarbons
Cyclic hydrocarbons

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Chemistry
Surface water is a better source of drinking water because it is poor in

Algae
Bacteria
Dust
Arsenic

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Chemistry
Oxygen which is vital for life is a product of photosynthesis and comes from

Carbonates from soil
Water
Carbon dioxide
Oxides of mineral elements

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MORE MCQ ON Chemistry

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