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Q. Permanent hardness of water can be removed by adding
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Q. The formula C6H5-CO-CH3 represents
Q. The pH of human blood is between:
Q. The ratio of different gases in air is
Q. Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?
Q. The substance that is not polymeric in nature is
Q. Diamond is the form of carbon that is
Q. The freezing point of water at 760mm pressure is
Q. .......... element has two orbits that are completely filled.
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