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Chemistry

Chemistry
Photo-oxidation process is initiated by

Heat
Catalyst
Oxygen
Light

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Chemistry
Which of the following is not a gaseous air pollutant?

Oxides of nitrogen
Smoke
Hydrocarbon
Oxides of sulphur

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Chemistry
Ozone saves the biosphere by absorbing high energy radiations called ________ .

Ultraviolet rays (UV)
Infra-red (IR)
Gamma rays
X–rays

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Chemistry
PH scale ranges from

8 – 14
0 – 14
0 – 7
None

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Chemistry
In addition to hydrogen, the other abundant element present on Sun’s surface is

Helium
Argon
Oxygen
Neon

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Chemistry
Aqueous solution of which of the following is a good conductor of electricity

Ammonium acetate
Glucose
Ammonia
Acetic acid

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