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Chemistry

Chemistry
What is the element that is in the highest percentage in the composition of the earth ?

Silicon
Magnesium
Iron
Oxygen

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Chemistry
Which one is a sublime substance?

Iodine
Sugar
Table salt
Potassium Iodide

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

Oxidation
Ozonolysis
Hydrogenation
Hydrolysis

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Chemistry
The 'solid waste' is also known as

Sedge
Scrubber
Sludge
Toxic waste

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Chemistry
Which one is not a primary greenhouse gases in the Earth's atmosphere

Ozone
Nitrogen
Carbon dioxide
Methane

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Chemistry
The absolute temperature of a gas is doubled and the pressure is reduced to half, the volume of the gas

Will be doubled
Will be reduced to half
Remains unchanged
Will increase four-fold

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MORE MCQ ON Chemistry

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