Which one of the following statements is incorrect ?

Question

Which one of the following statements is incorrect ? (A) Direct and indirect methods are used for the measurement of physical quantities (B) Scientific notation and the prefixes are used to simplify numerical computation (C) A dimensionally correct equation need not be a correct equation (D) The SI units is based on six base units

Tardigrade Admin · Accepted Answer

SI units is based on seven base units. These are metre, kilogram, second, ampere, kelvin, mole and candela.

Q. Which one of the following statements is incorrect ?

Direct and indirect methods are used for the measurement of physical quantities

Scientific notation and the prefixes are used to simplify numerical computation

A dimensionally correct equation need not be a correct equation

The $S I$ units is based on six base units

$S I$ units is based on seven base units. These are metre, kilogram, second, ampere, kelvin, mole and candela.