Which among the following substances is insoluble in water?
A
Chalk powder
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B
Lime juice
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C
Turmeric powder
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D
Coffee powder
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Solution
The correct option is A Chalk powder Chalk powder is insoluble in water. When it is added to water, chalk powder settles at the bottom of water. Lime juice, turmeric powder, and coffee powder are substances that dissolve in water.