Correct answer
C. Both A. and B.
Explanation
The correct answer is Both A. and B..
Hollow refractory bricks are made by________?
Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto ________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury?
Inertial forces are obtained, when the elastic forces are multiplied by ________ number?
Shell side pressure drop in a shell and tube heat exchanger does not depend upon the________?
Bromine content in sea water may be around ________ ppm?
Dew point of a gas-vapour mixture________?