Radiant heating is used for which of the following ?
Correct answer: D. Drying of paints and varnishes
- A. Annealing of metals
- B. Melting of ferrous metals
- C. Heating of liquids in electric kettle
- D. Drying of paints and varnishes
Explanation
Radiant heating transfers heat mainly through infrared radiation, making it especially suitable for surface processes such as drying paints and varnishes. Annealing and melting are generally performed in furnaces using resistance, induction, or arc heating.
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