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Chemistry

Chemistry
For extinguishing fire, we use

Marsh gas
Hydrogen
Carbon Dioxide
Carbon Monoxide

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Chemistry
The purest form of water in nature is

Lake water
Rain water
Sea water
River water

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Chemistry
Air shows the property of

None of these
Both A and B
N2
O2

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Chemistry
Who developed Hydrogen Bomb?

J. Robert Oppen Heimer
Samuel Cohen
Edward Teller
Wernher Von Braun

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Chemistry
The green colour seen in firework displays is due to the chloride salt of :

Calcium
Strontium
Sodium
Barium

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Chemistry
'Bhopal gas tragedy' 1984 is related to which gas

Aluminium Phosphide
Methyl isocyanate
Carbon dioxide
Methyl bromide

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