Question

Which of the following is used for measuring the mass of costly substances such as gold, silver or diamonds?

• A. Physical Balance
• B. Barometer
• C. Electronic or Digital balance
• D. Compression balance

Answer 1

Answer: (A), (C)

The correct options are
A Physical Balance
C Electronic or Digital balance

For measuring the mass of costly substances such as gold, silver, diamonds we use a physical balance or an electronic balance. These are very accurate balances and can show even a very small difference in mass.
Barometer is a device used to measure atmospheric pressure and cannot measure the mass of a body directly.