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Q. The mass number of a nucleus is
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Q. Aluminium is extracted from bauxite
Q. Which gas emitted by power stations causes acid rain?
Q. 1 Curie of activity is equivalent to
Q. The most commonly used metal in the pure form or as an alloy in domestic appliances is
Q. Which of the following gas is used for converting vegetable oils into saturated fats -
Q. Diamond is made of the same single element as
Q. In known elements, the maximum number is of
Q. Which gas is used as fire extinguisher ?
Q. The metal that does not give H2 on treatment with dilute HCl is
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