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Question

The boiling point of a gas is -80°C. This temperature is equivalent to


A

-193K

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B

193K

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C

353K

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D

-353K

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Solution

The correct option is B

193K


Explanation for the correct option:

b) 193K:

Boiling point: - The temperature at which a liquid changes into a gas or vapour at the atmospheric pressure is called its boiling point.

The relation between celsius and kelvin is: K=°C+273

K=°C+273K=-80°C+273K=193

Explanation for the incorrect options:

Since -80°C is equivalent to 193K, a) -193K, c) 353K, d) -353K are incorrect.

Hence, option (b) is correct. The temperate equivalent to -80°C is 193K.


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