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Chemistry

Chemistry
The purest form of water is

Rain water
Distilled water
Ground water
Tap water

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Chemistry
Saccharin is made up of

Propane
Toluene
Phenol
Butane

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Chemistry
In a reaction of the type A+B ? C+D one could ensure it to be a first order reaction by :

Increasing the concentration of a product
Increasing the temperature
Increasing the concentration of a reactant
Adding a catalyst

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Chemistry
For generation of biogas, the materials commonly used are

Aquatic plants
Animal wastes
Forest residues
Crop residues

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Chemistry
Ozone layer of atmosphere absorbs:

Ultraviolet rays
All radiations of Light
Infra-red rays
Cosmic rays.

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Chemistry
Copper is refined by

Roasting
Oxidation
Electrolysis
Zone refining

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MORE MCQ ON Chemistry

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