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Chemistry

Chemistry
Which of the following is secondary air pollutant ?

Dust particles
SO2
Photochemical smog
NO2

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Chemistry
In its reaction with silver nitrate, C2H2 shows

Basic property
Reducing property
Acidic property
Oxidising property

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Chemistry
Charcoal is used in water treatment as a/an

Adsorbent
Coagulant
Solvent
Absorbent

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Chemistry
Among the following, carbonate ore of Zinc is

Calamine
Sphalerite
Zincite
Zincblende

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Chemistry
Cement is formed by strongly heating a mixture of

Limestone and graphite
Clay and graphite
Limestone and clay
Chalk and graphite

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Chemistry
For generation of biogas, the materials commonly used are

Animal wastes
Forest residues
Aquatic plants
Crop residues

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