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Chemistry

Chemistry
The metal ion present in Vitamin B12 is

Zinc
Cobalt
Iron
Nickel

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Chemistry
Acid rain is caused by the pollution of environment by

Carbon monoxide and Carbon dioxide
Nitrous oxide and Sulphur dioxide
Ozone and Carbon dioxide
Carbon dioxide and Nitrogen

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Chemistry
The gas used in the manufacture of vanaspati from vegetable oil is

carbon dioxide
nitrogen
hydrogen
oxygen

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Chemistry
The compounds formed when hydrogen combines with p-block elements are called

Ionic hydrides
Polynuclear hydrides
Molecular hydrides
Metallic hydrides

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Chemistry
The residue left after extracting juice from sugarbeet and sugarcane is called

Biomass
Molasses
Bagasse
Whey

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Chemistry
Global warming is mainly due to accumulation of

Carbon monoxide
Oxides of sulphur
Oxides of nitrogen
Carbon dioxide

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MORE MCQ ON Chemistry

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