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Chemistry

Chemistry
The anode of a dry cell is made up of

Iron
Lead
Zinc
Cadmium

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Chemistry
The length of double bond is _______ than single bond

Of same lenght
Shorter
None of these
Longer

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Chemistry
Ozone layer of atmosphere absorbs:

Cosmic rays.
Ultraviolet rays
All radiations of Light
Infra-red rays

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Chemistry
Which of the following pollutants is main product of automobile exhaust ?

CO2
NO
CO
Hydrocarbons

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Chemistry
Which one of the following is an example of a gel ?

Cheese
Milk
Face cream
Shaving cream

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Chemistry
The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ?

12
Zero
18
6

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