Question

Mercury thermometers are increasingly being replaced by digital thermometers. Which of the following is a correct reason for this?

• A. Mercury is toxic
• B. Mercury is difficult to dispose of in case it leaks
• C. Digital thermometers are always more accurate than mercury thermometers
• D. Digital thermometers are easier to read than mercury thermometers

Answer 1

Answer: (A), (B), (D)

The correct options are
A

Mercury is toxic

B

Mercury is difficult to dispose of in case it leaks

D

Digital thermometers are easier to read than mercury thermometers

Mercury thermometers are now increasingly being replaced because mercury is toxic in nature. It harms living organisms and the environment. Disposal of mercury is also very difficult. On the other hand, digital thermometers are easy to use. There is no parallax error while observing the reading of a digital thermometer. Both types of thermometers have similar degree of accuracy.