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Q. Fathom is the unit of
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Q. An Element Atomic number 17 and Mass number 36, then number of neutrons present in it
Q. Why is water not suitable for putting out a petrol fire
Q. By-product obtained by soap industry is
Q. Gold and silver are extracted from their respective ores by _______
Q. The iron ore which contains 72% of iron is:
Q. The gas used to dilute oxygen for breathing by deep sea divers is:
Q. How many Ergs are there in 1 joule?
Q. The yellow colour of urine is due to presence of
Q. Atoms having equal number of protons but different number of Neutrons are called
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