GK: Which part of the body does not sweat? Click here to know

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Question 1: Which part of the body does not sweat? Many people don't know

Answer: Lips

Question 2: Approximately what part of the energy expended in tube light is converted into the light?

Answer: 60-70 percent 

Question 3: Which metal is used to generate electricity?

Answer: Uranium

Question 4: The speed of light decreases as we go through? 

Question: Glass 

Question 5: In which direction does the Earth's magnetic field expand?

Answer: South to North