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Chemistry

Chemistry
Major gaseous pollutant of the thermal power station is

NO2
NH3
H2 S
SO2

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Chemistry
Which of the following is not present in RNA

Uracil
Thymine
Phosphate
Ribose

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

Carbon dioxide
Carbon monoxide
Sulphur dioxide
Methane

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Chemistry
Persons working in cement plants and lime stone quarries are prone to disease like

Silicosis
Cancer
Asthma
Pneumoconiosis

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Chemistry
Which of the following is a secondary pollutant ?

NO
SO2
CO
PAN

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Chemistry
The most abundant metal in the Earth’s crust is

Iron
Zinc
Aluminium
Copper

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