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Chemistry

Chemistry
The number of moles of solute present in 1 kg of a solvent is called its

formality
molality
molarity
normality

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Chemistry
Quartz is a crystalline form of

Limestone
Silica
Glass
Alumina

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

Oxygen
Silicon
Magnesium
Iron

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Chemistry
The deterioration of a metal by an electrochemical process is commonly termed as

Abrasion
Corrosion
Erosion
Passivation

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Chemistry
The gas used in the artificial ripening of fruits is

Acetylene
Methane
Ethane
Butane

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Chemistry
If we burn graphite,

It will not burn
No residue will be left
Residue will be left
It will change into diamond

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