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Chemistry

Chemistry
What is the principal ore of aluminium ?

Lignite
Copper
Bauxite
Dolomite

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Chemistry
Which one of the following organic compounds has fruity smell?

Alcohol
Aldehyde
Ether
Ester

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Chemistry
The percentage of carbon in cost iron is :

6 to 8
0.5 to 1.5
0.01 to 0.25
3 to 5

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Chemistry
The length of double bond is _______ than single bond

Shorter
Longer
None of these
Of same lenght

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Chemistry
Iron rusts quickly in

Rain water
Sea water
Distilled water
River water

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

Oxidation
Hydrogenation
Hydrolysis
Ozonolysis

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MORE MCQ ON Chemistry

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