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Q. How many moles are there in 140g of Si (atomic mass of silicon is 28)
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Q. The gas used in the manufacture of vanaspati from vegetable oil is
Q. The drugs known as vasodilators are used to treat
Q. Which of the following is NOT correct about Group 14 elements?
Q. Calcium salts used as fertilizer is:
Q. The percentage of Nitrogen in Air is
Q. The gas that can be used as fuel is
Q. The main purification/separation procedure used in petroleum industry is
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