Which one of the following statements regarding oxidation and reduction reactions is NOT correct?
If a substance loses hydrogen during reaction, it is reduced
Correct Answer: (a) If a substance loses hydrogen during reaction, it is reduced
Explanation: Reduction refers to a substance gaining electrons (often by gaining hydrogen or losing oxygen), not losing hydrogen.
Which one of the following is dimensionless quantity?
The unit of measurement of noise is
Unit is ______.
Intensity of radioactivity is measured in -
Which of the following is not a fundamental quantity?
If the error in the measurement of the radius of the sphere is 1%, then the error in the measurement in its volume is