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CHEMISTRY

Chemistry
Glycol is added to aviation gasoline because it

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

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Chemistry
Which is the heaviest metal among the following?

Iron
Copper
Silver
Gold

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Chemistry
The wire of flash bulbs is made up of

Cu
Ba
Mg
Ag

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Chemistry
Which among the following is found in chlorophyll ?

Ca2+
Mg2+
Fe2+
A l3+

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Chemistry
Among the following the hardest metal is

Tungsten
Iron
Gold
Platinum

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