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Chemistry

Chemistry
Mercury is emitted into air by

Burning coal
Coal fire
Burning garbage
Steam engine

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Chemistry
Which of the following metals can displace copper from copper sulphate solution ?

Gold
Mercury
Platinum
Iron

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Chemistry
Preparation of ‘Dalda or Vanaspati’ ghee from vegetable oil utilizes the following process :

Oxidation
Ozonolysis
Hydrolysis
Hydrogenation

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Chemistry
The octane number of zero is assigned to

2-methyl octane
n-heptane
3-methyl octane
iso-octane

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Chemistry
'Vinegar' is a commercial name of

Acetic acid
Citric acid
Hydrochloric acid
Oxalic acid

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

3
2
4
1

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MORE MCQ ON Chemistry

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