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Chemistry

Chemistry
Which one is the lightest element in the periodic table

Carbon
Helium
Hydrogen
Oxygen

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Chemistry
A thick paste of cement, sand and water is called

Kiln
R.C.C.
Mortar
Concrete

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

Hydrogenation
Ozonolysis
Hydrolysis
Oxidation

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Chemistry
What is the mass percentage of oxygen in carbon dioxide (CO2)

0.658
0.509
0.305
0.727

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Chemistry
Milk is a natural

Suspension
Mixture
Solution
Emulsion

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Chemistry
Hydrogen is not found in atmosphere because

It is the lightest gas
It immediately combines with oxygen to form water
It is absorbed by plants
It is highly inflammable

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MORE MCQ ON Chemistry

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