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Chemistry

Chemistry
What is the element required for solar energy conversion ?

Ultra pure carbon
Tantalum
Silicon
Beryllium

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Chemistry
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

1 : 16 : 2
1 : 1 : 1
2 : 16 : 1
2 : 16 : 2

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Chemistry
Stalactites and Stalagmites form due to the precipitation of :

MgCl2
CaCO3
CaCl2
MgCO3

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Chemistry
The metal ion present in Vitamin B12 is

Zinc
Nickel
Cobalt
Iron

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Chemistry
Which halide is used in making sensitive emulsion on photograhic film?

Silver iodide
Silver chloride
Sodium chloride
Silver bromide

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Chemistry
Which is not a green house gas ?

N2O
CH4
Chlorofluorocarbons
CO2

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MORE MCQ ON Chemistry

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