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Chemistry

Chemistry
The number of hydrogen bonds between guanine and cytosine in DNA is

3
2
1
4

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Chemistry
Fertiliser having high nitrogen content is :

Urea
Ammonium nitrate
Calcium citrate
Ammonium sulphate

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Chemistry
The polymer obtained by the condensation of hexamethylene diamine and adipic acid is :

Tollen's
Terylene
Nylon 66
Bakelite

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Chemistry
Which metal is the heaviest in periodic table among the following ?

W
Pt
Os
Pb

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Chemistry
The chemical used for cloud seeding for artificial rains is

Potassium Bromide
Potassium Nitrate
Silver Iodide
Silver Nitrate

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Chemistry
The first organic compound synthesised in the laboratory was

Uric acid
Urea
Lactic acid
Glucose

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