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Chemistry

Chemistry
The common refrigerant in domestic refrigerator is

Freon
Oxygen
Neon
Nitrogen

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Chemistry
Tetra ethyle lead (TEL) is

An antiknock compound
A reductant
A catalyst in burning fossil fuel
An antioxidant

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Chemistry
Brass gets discoloured in air due to constant exposure in presence of:

Hydrogenated wafers
Aluminium sulphide
Hydrogen sulphide
Aluminium phosphide

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Chemistry
The compound that has the least value for octane number is :

2-methyl heptane
2,2-dimethyl hexane
N-heptane
Iso-octane

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Chemistry
Bridgmanite is

Earth’s most abundant minera
A bridge on the river Thames
Name of a music
Name of a game

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Chemistry
The quality of petrol is expressed in terms of

Gold number
Added unlead compounds
Cetane number
Octane number

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MORE MCQ ON Chemistry

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