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Chemistry

Chemistry
Which gas is used for converting vegetable oils into saturated fats ?

H2
O2
Cl2
SO2

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Chemistry
Which of the following metals can displace copper from copper sulphate solution ?

Iron
Platinum
Gold
Mercury

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Chemistry
Taj Mahal is greatly affected due to :

Deforestation
Acid rain
Sound pollution
Tourists

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Chemistry
Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives

Copper at cathode and oxygen at anode
Hydrogen at cathode and oxygen at anode
Copper at cathode and anodes dissolve to give copper
Copper at anode and oxygen at cathode.

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Chemistry
Stains of rust on clothes can be removed by :

H2O2
Alcohol
Oxalic acid
Petrol

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Chemistry
Silicon is used in

Solar energy devices
Transistors
Semiconductors
All of these

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MORE MCQ ON Chemistry

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