Q1 of 44 Page 19

Assertion (A): The SI system of units is the improved system of units for measurement.

Reason (R): The SI unit of mass is kilogram


Here, R is not giving proper reason that how SI system of units is the improved system of units of measurement. SI unit system is improved system as it has fixed reference and accepted in all over the world.

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Assertion (A): The skill of estimation is important for all of us in our daily life.

Reason (R): The skill of estimation reduces our consumption of time


 3

Assertion(A): The scientifically correct expression is “ The mass of the bag is 10 kg”

Reason (R): In everyday life, we use the term weight instead of mass