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Chemistry

Chemistry
Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs?

Hydrogen
Methane
Nitrogen
Helium

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Chemistry
What is the chemical symbol of mercury

Hg
None of these
Mg
Mr

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Chemistry
Spirit in contact with body gives cool sensation because it is :

Liquid
Highly volatile
A good conductor
Transparent

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Chemistry
An emulsifier is an agent which

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

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Chemistry
Detergents used for cleaning clothes and utensils contain

Bismuthates
Nitrates
Bicarbonates
Sulphonates

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Chemistry
PVC is obtained by the polymerisation of

Propane
Acetylene
Vinyl chloride
Styrene

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MORE MCQ ON Chemistry

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