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Chemistry

Chemistry
Brass is a

Homogeneous mixture
Compound
Element
Heterogeneous mixture

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

SO2
O2
H2
Cl2

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Chemistry
Colloids can be purified by

Condensation
Condensation
Condensation
Dialysis

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Chemistry
Combustion of a candle is a/an

Endothermic reaction
Photochemical reaction
Exothermic reaction
Physical change

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Chemistry
An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a :

Uninterrupted power supply (UPS)
Power transmittor
Battery
Generator

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Chemistry
What is the chemical symbol of mercury

Mr
Hg
None of these
Mg

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MORE MCQ ON Chemistry

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