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Chemistry

Chemistry
The metal chiefly used for galvanising iron is :

Tin
Zinc
Cadmium
Mercury

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Chemistry
Which of the following processes is used for the production of Biodiesel ?

Translation
Transesterification
Transcription
Transamination

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Chemistry
The molecular mass of a gas is

Half its vapour pressure
Equal to its vapour pressure
Not related to its vapour pressure
Twice its vapour pressure

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Chemistry
Helium gas is filled in ballons because

Its atomic number is 2
It is one of the constitutents of water
It is a noble gas
It is lighter than air

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Chemistry
The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are

Sodium Chloride
All listed here
Silver Iodide
Dry ice or frozen carbon dioxide

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Chemistry
An emulsifier is an agent which

Accelerates the dispersion
Aids the flocculation of an emulsion
Homogenises an emulsion
Stabilises an emulsion

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