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Chemistry

Chemistry
Which of the following gases is most toxic ?

Sulphur dioxide
Chlorine
Carbon monoxide
Carbon dioxide

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Chemistry
The next higher homologue of C6H14 is

C6H12
C7H14
C7H12
C7H16

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Chemistry
The metal used to recover copper from a solution of copper sulphate is

Hg
Fe
Na
Ag

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Chemistry
When iron rusts, its weight

Remains the same
Decreases
First increases and then decreases
Increases

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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)
Battery
Generator
Power transmittor

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Chemistry
KMnO4 can be used as a/an

Disinfectant
Fertiliser
Insecticide
Pesticide

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MORE MCQ ON Chemistry

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