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Q. What J. B. Dunlop invented?
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Q. The substance which does not expand on going from liquid state to solid state is
Q. Eutrophication of a water body enhances
Q. Optical fibers are mainly used for which of the following?
Q. The waves used in sonography are
Q. The manufacture of iron from iron ore involves the process of
Q. If A is a matrix of order 3*5 and B is a matrix of order 5*3,then the order of AB and BA will be
Q. Which among the given in automobile exhaust can cause cancer
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