Question

A constant volume gas thermometer using helium records a pressure of 20.0kPa at the triple point of water and pressure of 14.3 kPa at the temperature of ‘dry ice’. What is the temperature of dry ice?

(a) 19.530K

(b) 1.9530K

(c) 195.30K

(d) 1953.0K

This question was addressed to me during an interview for a job.

The above asked question is from Latent Heat topic in division Kinetic Theory of Gases of Engineering Physics I

Answer 1

Correct option is (c) 195.30K

Best explanation: Temperature of dry ice,

T=P/Ptr ×Ttr=(14.3×273.16)/20

Temperature = 195.30K.