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Chemistry

Chemistry
The hardest form of carbon is

graphite
charcoal
coke
diamond

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Chemistry
‘Aerosol’ is known as

Pollutant gas, present in air
Microbes, present in air
Suspended solid particles in air
Green house gas present in air

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Chemistry
Liquid Nitrogen boils at

54 kelvin
82 Kelvin
97 Kelvin
77 kelvin

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Chemistry
The buffer action of blood is due to the presence of

CI– and [HCO3]–
CI– and [CO3]2–
[HCO3]– and H2CO3
HCI and NaCI

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Chemistry
Which one of the following statement is correct ?Ozone is found in the earth's atmosphere mostly between

20 and 50 km
10 and 20 km
50 and 100 km
5 and 10 km

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Chemistry
Which of the following metals can displace copper from copper sulphate solution ?

Mercury
Iron
Gold
Platinum

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MORE MCQ ON Chemistry

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