Q. The process of improving the quality of rubber by heating it with sulphur is called
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Q. Fixation of nitrogen implies
Q. “Atoms can neither be created nor destroyed.” This principle was given by __?
Q. A chemical reaction that place with the evolution of heat is called a/an
Q. The gas used in fire extinguishers is
Q. The process of seperation of compounds from mixtures into their individual form, is known as
Q. The best way of sterilising a hypodermic syringe for injecting medicine is by
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