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Chemistry

Chemistry
Most poisonous pollutant in water is

Zinc
Phosphate
Detergent
Arsenic

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Chemistry
Zone refining is used for the purification of

Cu
Ag
Ge
Au

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Chemistry
The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

ozone
helium
oxygen
methane

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Chemistry
Two electrons in an orbital are differentiated by which of the following ?

Azimuthal quantum number
Magnetic quantum number
Spin quantum number
Principal quantum number

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Chemistry
If there is one million Mg2+ ions in MgCl2, how many chloride ions are there?

Half a million
One million
Two million
Ten million

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Chemistry
The gas involved in Bhopal incident was

Hydrogen sulphide
Methyl chloride
Nitrogen dioxide
Methyl isocyanide

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MORE MCQ ON Chemistry

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