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Chemistry

Chemistry
The smog is essentially caused by the presence of

O2 and O3
O2 and N2
O3 and N2
Oxides of N and S

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Chemistry
The material which can be deformed permanently by heat and pressure is called a

polymer
thermoplastic
thermoset
chemical compound

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Chemistry
The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are

Sodium Chloride
Dry ice or frozen carbon dioxide
Silver Iodide
All listed here

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Chemistry
Who is known as the 'father of modern chemistry'

Democritus
Robert Boyle
John Dalton
Antoine Lavoisier

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Chemistry
Which of the following molecules has a bond order of 2.5

F2
HCL
NO
CO

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Chemistry
Removal of carbon particles from air involves the principle of

Electrophoresis
Precipitation
Sedimentation
Filteration

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