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Antimony and bismuth are usually used in...

Antimony and bismuth are usually used in a thermocouple, because

A

a constant thermo e.m.f. is produced

B

higher thermo e.m.f. is produced

C

a negative thermo e.m.f. is produced

D

lower thermo e.m.f. is produced

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The correct Answer is:
B
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