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Q. Which of the following is the heaviest metal among the following -
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Q. In upper layer of atmosphere ozone is formed by
Q. The gas dissolved in water that makes it basic is:
Q. The substance coated on plastic tape recorder tapes is
Q. The poisonous substance that is the main constituent of tobacco is
Q. Which among the given gases is most toxic -
Q. The gas evolves during the fermentation of a sugar solution is
Q. The inert gases are ____ in water.
Q. The maximum number of electrons that can be accommodated in a shell depends on the formula
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