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Q. A mixture of sand and salt can be separated by ?
the water to boil away and collect salt from there. Hence, we can separate sand and salt by Dissolving salt in water and then distillation
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Q. The ratio of different gases in air is
Q. Which method will be employed to test the hardness of water?
Q. Which of the following metals is not a pollutant ?
Q. An electrically charged atom or group of atoms is called
Q. The metal that is used as a catalyst in the hydrogenation of oils is
Q. The atoms of the elements which have same number of neutrons are called
Q. Which of the following is the poorest conductor of electricity?
Q. Which of the following is responsible for blue baby syndrome
Q. Stalactites & Stalagmites form due to the precipitation of:
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