Which apparatus is used to keep copper sulphate for mixing water during crystallisation?
A
Test tube
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B
China dish
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C
Beaker
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D
Spatula
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Solution
The correct option is C China dish China dish is used to keep copper sulphate for mixing water during crystallization. Note: Impure copper sulphate sample is placed in china dish. It is dissolved in minimum water. The impurities are removed by filtration. The water is evaporated from copper sulphate solution so that saturated solution is obtained. The solution is covered with filter paper and left undisturbed at room temperature. Copper sulphate crystals are obtained in china dish after a day.