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Chemistry

Chemistry
The main active constituent of tea and coffee is

caffeine
nicotine
chlorophyll
aspirin

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Chemistry
Which one of the following is used as an anti-freeze for the automobile engines ?

Ethanol
Ethylene glycol
Methanol
Propyl alcohol

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Chemistry
What is Zeolite?

Hydrated Aluminosilicate
Dehydrated Aluminosilicate
Dehydrated Calcium Sulphate
Hydrated Calcium Sulphate

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Chemistry
The nuclear particles which are assumed to hold the nucleons together are

electrons
neutrons
positrons
mesons

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Chemistry
Litmus is obtained from

An alga
A fungus
A bacterium
Lichen

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Chemistry
The oxidation number of nickel in K4[Ni(CN)4] is

–4
8
Zero
4

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