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Q. The first metal used by a man was
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Q. Regarding the atom of a chemical element, magnetic quantum number refers to
Q. The gas dissolved in water that makes it basic is:
Q. Ferrous sulphate is used in water treatment as a/an
Q. Bohr model can explain about
Q. In a nuclear reactor the material use for absorbing neutrons is
Q. Allugel tablets used to reduce acidity contain
Q. Many marine animals use _______________ dissolved in sea-water to make their shells.
Q. Which among the given is not a greenhouse gas -
Q. Which component is used to harden the rubber in the vulcanization process?
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