National Science Olympiad Forum By SOF Olympiad Trainer - Page 143

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
D

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 2

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 9

Which of the following statements is incorrect?
(i) The flow of electric current in the circuit is from negative to the positive terminal of the battery.
(ii) Pure water is a good conductor of electricity.
(iii) In the electroplating of copper, copper gets transferred form the anode to the cathode.
(iv) In a dry cell, the electrolyte is a paste of ammonium chloride.

A(i) and (iv) only
B(ii) and (iv) only
C(ii) and (iii) only
D(i) and (ii) only


The first one is correct as it has been proved that current flows from negative to positive making the answer (ii) only, which is not one of the options!!

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7

Ans 2:

Class : Class 5

Ans 3:

Class : Class 5

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