What is the cause of convection heat transfer in evaporators?

A. Convection is heat transfer by neutrons

B. Convection is heat transfer by mass motion of a heat source

C. Convection is mass transfer by mass motion of a fluid

D. Convection is heat transfer by mass motion of a fluid

Explanation: Convection is heat transfer by mass motion of a fluid like water, air. Due to this movement the heated fluid moves away from the source of heat and thus carrying energy with it.

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If the letters of the word PARAM are arranged at random, what is the probability that all vowels will come together?

A bag contains 3 black and 9 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?

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From a bag containing 12 white and 15 yellow ribbons, find the probability of picking 2 ribbons of each type at random.

5 coins are tossed together. What is the probability of getting exactly 3 tails?

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