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Chemistry

Chemistry
Forth floatation process to concentrate the minerals is applicable to

Bauxite
Calamine
Haematite
Chalcopyrites

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Chemistry
The smog is essentially caused by the presence of

O2 and O3
Oxides of N and S
O2 and N2
O3 and N2

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Chemistry
Nylon is made up of :

Polyester
Polyamide
Polypropylene
Polyethylene

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Chemistry
Stalactites and Stalagmites form due to the precipitation of :

CaCO3
MgCl2
MgCO3
CaCl2

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Chemistry
What is the atomic number of mercury

63
80
41
32

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Chemistry
The gas which emits from rice field is

Ethane
All of these
Methane
Nitrogen

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MORE MCQ ON Chemistry

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