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Chemistry

Chemistry
In deep-sea diving, divers use a mixture of gases consisting of oxygen and

Nitrogen
Argon
Hydrogen
Helium

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Chemistry
PVC is obtained by the polymerisation of

Vinyl chloride
Acetylene
Styrene
Propane

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Chemistry
Which one of the following has greatest mass ?

Electron
Hydrogen nucleus
Proton
Neutron

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Chemistry
Submarines move under water. They have engines that run on

Diesel
Petrol and oxygen
Steam
Batteries

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Chemistry
Williamson's synthesis is widely used in the laboratory preparation of

Aldehydes
Alcohols
Esters
Ethers

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Chemistry
Magnalium is an alloy of

Manganese and Magnesium
Aluminium and Zinc
Magnesium and Tin
Aluminium and Magnesium

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