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Chemistry

Chemistry
Which of the following elements is found in all organic compounds

Oxygen
Nitrogen
Carbon
Calcium

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Chemistry
The coordination number of body centered atom in cubic structure is

8
10
4
6

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Chemistry
The iron ore which contains 72% of iron is :

Magnetite
Limonite
Siderite
Haematite

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Chemistry
The gas produced in marshy places due to decomposition of vegetation is

Sulphur dioxide
Carbon monoxide
Methane
Carbon dioxide

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Chemistry
The chemical name of 'Plaster of Paris' commonly used for setting broken bones is

Calcium carbonate
Calcium sulphate
Calcium nitrate
Calcium chloride

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Chemistry
The degree of dissociation of an electrolyte depends on

Dilution
Method of dissolution
Atmospheric pressure
Impurities

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