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Chemistry

Chemistry
The purest form of Iron is :

Steel
Pig iron
Wrought iron
Cast iron

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

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

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Chemistry
Glycol is added to aviation gasoline because it

Prevents freezing of petrol
Reduces consumption of petrol
Increases efficiency of petrol
Reduces evaporation of petrol

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Chemistry
The most volatile of the given liquids is

Ether
Liquid He
Liquid
Liquid NH3

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Chemistry
The unit to measure the flow of water is

Micro Mho
Cusecs
Milli curie
Ohm meter

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Chemistry
Sea water is saltier than rain water because

Sea animals are salt producing
The air around the sea is saltish
Sea beds have salt producing mines
Rivers wash away salts from earth and pour them into the sea

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