Choose the most appropriate answer
Which of the gas is highly soluble in water ?
- Carbon monoxide
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Winnowing is the method used to separate
- chaff from grain.
- stones from rice
- oil from water
- salt from sand
Fill in the blank
................. is used when the constituents of a mixture of solids have difference in their weights
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Loading is a process in which
- impurities become heavy and sink to the bottom.
- impurities float on the top.
- impurities vaporize.
- none of these