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Q. Which among the given is not a method of preparing oxygen
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Q. A pure substance can only be
Q. The particle that display dual nature of both waves and particle, are
Q. Which of the following one of the following acids is used in battery -
Q. In upper layer of atmosphere ozone is formed by
Q. The number of g-molecule of oxygen in 6.02 x 10^24 CO molecules is
Q. A particle which is similar to electron is
Q. The electronic configuration of atom / ion can be defined by which of the following?
Q. Which of the following processes is used to remove reducible oxides from the metal?
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