Question

Statement I: Hold the lab thermometer in a straight vertical direction, while it is dipped inside the material.
Statement II: The reading should be taken from the lab thermometer after removing it from the material.

• A. Statement I is incorrect and statement II is correct.
  
• B. Statement I is correct and statement II is incorrect.
• C. Both statements are correct.
• D. Both statements are incorrect.

Answer 1

The correct option is B Statement I is correct and statement II is incorrect.

To obtain the correct reading from a lab thermometer, it should be kept upright (straight vertical direction).When the thermometer is kept tilted, the mercury will not rise to the appropriate level.
This will result in an incorrect reading.

The lab thermometer should not not be removed from the object whose temperature is to be measured. If we do so, the mercury level falls as there is no kink and we cannot get the actual reading.
Therefore, statement I is correct and statement II is incorrect.