EASY
9th CBSE
IMPORTANT
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21 g potassium nitrate dissolves in 100 g of water at 10 °C. The solubility of potassium nitrate is:

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Important Questions on Is Matter Around Us Pure?

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9th CBSE
IMPORTANT
The solubility of a saturated solution at some known temperature on heating:
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9th CBSE
IMPORTANT
When the temperature of a saturated solution is raised it:
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9th CBSE
IMPORTANT
A saturated solution at 80°C is cooled to 20°C. During the fall in temperature:
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9th CBSE
IMPORTANT
The solubility of potassium nitrate is 62 g/100 g of water at 313 K. The amount of potassium nitrate required to prepare its saturated solution at 313 K in 50 g water is:
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9th CBSE
IMPORTANT
The solubility of potassium chloride at 353 K is 54 g/100 g of water and at 283 K is 35 g/100 g of water. If 154 g of potassium chloride at 353 K is cooled to 283 K, the potassium chloride which crystallizes out is:
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9th CBSE
IMPORTANT
A heterogeneous mixture of insoluble particles of a solute, which spreads out throughout a solvent is called:
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9th CBSE
IMPORTANT
The particle size (diameter) in a suspension is:
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9th CBSE
IMPORTANT
Which is the incorrect statement regarding suspensions?