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Chemistry

Chemistry
Sodium Carbonate is commonly known as

Caustic Potash
Baking Soda
Caustic Soda
Washing Soda

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Chemistry
Neoprene is prepared by polymerisation of which of the following

1,3-butadiene
2-methyl 1, 3-butadiene
2-chloro-1, 3-butadiene
Acrylonitrile

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Chemistry
The product, 9-nitroanthracene is obtained from anthracene by the action of

Nitric acid in excess
Nitric acid and acetic anhydride
Nitric acid and ethyl alcohol
Nitric acid and acetic acid

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Chemistry
When Hydrogen starts burning in air, it produces ?

Water
Methane
Ammonia
Carbonic Acid

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Chemistry
A balloon filled with helium rises in air because

Helium is less dense than air
The balloon is weightless
Air exerts an upward force on the balloon
Helium pushes down on the air below the balloon

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Chemistry
Supersonic jet causes pollution by thinning of

O 2 layer
SO2 layer
O3 layer
CO2 layer

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