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Q. The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?
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Q. The main purification/separation procedure used in petroleum industry is
Q. Which of the following metals is commonly used to increase the strength of steel alloys?
Q. During the burning of fuels, carbon and hydrogen present in the fuels are
Q. Which of the most reactive metal?
Q. The molecules of which gas have highest speed?
Q. The number of unpaired electrons in carbon atom is
Q. Which of the following is caused by the higher concentration of Nitrogen and Phosphorous?
Q. Anaemic patients are deficient in
Q. Which metal does not present in the alloy “German Silver”?
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