What do you know about the most scientific system of units?

What is the S.I. unit of mass? How is it defined?

Match the following prefixes with their multiples:

A train covers a distance of 144 kilometers in two hours. What is the speed of the train in m/s.

What do you mean by Dimensional Analysis (Derived units)?

Fill in the blanks in the following conversions:
(i) 1 km = ............. mm = .............. pm
(ii) 1 mg = ............... kg = ............. ng
(iii) 1 mL = ........ L = .......... dm³

If the speed of light is 3·0 × 10⁸ ms^–1, calculate the distance covered by light in 2.00 ns.

Convert the following into basic units:
28.7 pm

Convert the following into basic units:
15.15 pm

Convert the following into basic units:
25365 mg