Which of the following is not used as a medium for high temperature heating ?
Correct answer: B. Mercury
- A. Dowtherm
- B. Mercury
- C. Liquid metal (e.g. molten sodium)
- D. Fused salts (e.g., an eutectic mixture of 53% KNO3, 40% NaNO2and 7% NaNO3)
Explanation
Dowtherm, molten metals such as sodium, and fused salts are used as high-temperature heating media. Mercury is unsuitable in this group because its boiling point is relatively low and it is highly toxic.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Heat Transfer Operations
645 free Heat Transfer Operations MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Heat Transfer Operations questions
Leidenfrost point is a term concerned with the____________________?
For concentrating an aqueous solution of a material like anhydrous Na2SO4, whose solubility decreases with rise in temperature, the most suitable evaporator is a _______________ evaporator?
For an ideal black body______________________?
The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by ______________ times, when the number of tube passes is increased to 8?
In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred_________________?
A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?