The zero of the scale is calibrated using which of the following as the sample? Options: A . &nbspAir B . &nbspWater C . &nbspInert gas D . &nbspPure nitrogen

The zero of the scale is calibrated using which of the following as the sample?

Question

The zero of the scale is calibrated using which of the following as the sample?

Options:

A . Air

B . Water

C . Inert gas

D . Pure nitrogen

Answer: Option D
Answer: (d).Pure nitrogen

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