When alcohol is kept in a china dish it evaporates, temperature falls and cooling is produced. Which one is the correct method to record the temperature?
  • a)
    By using a thermometer
  • b)
    By taking help of the teacher.
  • c)
    By smell of alcohol vapour
  • d)
    By touching the surface of china dish
Correct answer is 'A'. Can you explain this answer?

Class 9 Question

Sharad Chavan
Dec 10, 2020
Thermometer is the correct method to measure temperature...

Nancy
May 27, 2018
Because of the temperature around as and because the alcohol have very less boiling temperature so thats why

Ranchander Sahu
Jul 11, 2018
'A' is the correct answer because it is the device made to measure temperature. 'D' is not correct as China dish is a bad conductor of heat so we can't actually feel the temp of alcohol.

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