Write true or false for each statement :

(a) S.I. unit of temperature is fahrenheit.

(b) Every measurement involves two things - a number and a unit.

(c) Mass is the measure of quantity of matter.

(d) The S.I. unit of time is hour.

(e) Area can be expressed as the product of lengths of two sides.

(a) False because S.I. unit of temperature is kelvin (K).

(b) True as a measurement needs two things :

1. The unit u, and
2. The number n which tells us how many times that unit is contained in that quantity.

Thus, a measurement is expressed as :

Measurement = n х u = nu

(c) True since mass of a body is the quantity of matter contained in it.

(d) False as the S.I. unit of time is second (s).

(e) True because area can be expressed in terms of the product of two measurements in length.