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Chemistry

Chemistry
The gas used in the artificial ripening of fruits is

Acetylene
Ethane
Butane
Methane

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Chemistry
The addition of gypsum to portland cement helps in :

Rapid setting of cement
Preventing rapid setting of cement
Increasing the strength of cement
Reduction in the cost of cement

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Chemistry
The gas used to dilute oxygen for breathing by deep sea divers is:

Neon
Nitrogen
Helium
Argon

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Chemistry
Percentage of lead in lead pencils is

80
40
31-66

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Chemistry
Bee sting contains

An alkaline liquid
A salt solution
An acidic liquid
A corrosive liquid

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Chemistry
The quality of petrol is expressed in terms of

Gold number
Added unlead compounds
Octane number
Cetane number

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MORE MCQ ON Chemistry

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