2198Chemical EngineeringMedium
What is the emissivity of a black body?
A0.90
B0
C1
D0.5
Correct answer
C. 1
Explanation
The correct answer is 1.
Correct answer
C. 1
Explanation
The correct answer is 1.
The time taken for a radioactive element to reduce to 50% of its original weight is ________ years, if its half life period is 12 years?
The relation, Sc = Pr = 1, is valid, when the mechanism of ________ transfer is same?
Pick out the wrong statement?
Bad odour in sanitary latrines is reduced by periodically sprinkling________?
Gaseous diffusivity at atmospheric pressure is of the order of ________ cm2/second?
Common salt is produced from sea water in India generally by the ________ method?