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CHEMISTRY

Chemistry
Glycol is added to aviation gasoline because it

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

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Chemistry
Which is the heaviest metal among the following?

Gold
Silver
Iron
Copper

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Chemistry
The wire of flash bulbs is made up of

Ba
Ag
Mg
Cu

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Chemistry
Which among the following is found in chlorophyll ?

Mg2+
Fe2+
Ca2+
A l3+

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Chemistry
Among the following the hardest metal is

Gold
Iron
Platinum
Tungsten

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