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Q. In drinking water supply, which of the following treatments is not involved
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Q. Which of the following carbon compounds is used as a fire- extinguisher?
Q. The number of moles of solute present in 1 kg of a solvent is called its
Q. A ‘breath test’ used by traffic police to check drunken driving uses ____?
Q. The coating of a thin layer of zinc on steel or iron objects is known as
Q. Which among the following coal contains 90 per cent of carbon?
Q. Which of the following pigments causes the red colour in onions?
Q. Which one of the following can be used as insecticide?
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