Multiple choice

Consider the following statements:

  1. Highly polished surfaces are bad absorbers of heat.
  2. Heat helps in increasing the shelf life of food items.

Which of the given statements is/are correct?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statement 1 is correct. Highly polished surfaces are bad absorbers of heat. The back grill of a refrigerator is painted black for the purpose. Statement 2 is also correct. Heat can kill the harmful bacteria and germs. This property of heat helps in keeping the food items, preserved for a longer time.

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