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Q. Which of the following one of the following is vastly used for sterilizing water
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Q. Which of the following method will be employed to test the hardness of water
Q. Galvanised iron sheets have a coating of
Q. In radio-communication, the signals emitted by transmitting antenna are reflected on
Q. In a filament type light bulb most of the electric power consumed seems as
Q. The carbon filament is invented by
Q. Which of the following one of the following is a greenhouse gas
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Q. Which among the following usually regulates breathing in Humans?
Q. A substance which readily forms colloidal solution in contact with water is called
Q. Which of the following is always found in a free state in nature?
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