Bob and Bill studied at the same university. While Bob got into studying nutrition, Bill ended up studying about cancer and how to prevent it. Which student learned more about exposure of the skin to UV radiation?
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Answer: Bill

Tom and Andy are two old friends. Tom was infected with HIV 20 years ago, and Andy has been helping him ever since. Andy is as healthy as an ox. Which friend can have the development of AIDS delayed with proper medicine?
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Answer: Tom

John wanted to charge his electronic gadgets remotely. To that end, he first conducted two experiments, case A and case B. In case A he used conduction, and in case B he used induction. In both cases he used same two objects. Finally, John tried to charge his phone remotely. He called this test as case C. In case A, if one object had positive charge, what charge the newly charged object would have, positive or negative?
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Answer:
positive