Which instrument directly measures the duration of a laboratory event?

A digital stopwatch that reads hundredths of a second has least count:

The surface of mercury in a measuring cylinder is generally:

Standard masses should be handled with forceps mainly to:

A liquid volume changes from 30 mL to 52 mL after immersion of a solid. The solid's volume is:

In a physical balance, the object is normally placed on the:

Which method is suitable when a solid cannot fit inside a measuring cylinder?

Which balance can measure mass of the order of 0.1 mg?

In the overflow-can method, the volume of displaced water is equal to the:

Why is the thickness of 100 paper sheets measured together?

Reaction time when starting a stopwatch is mainly a source of: