MEDIUM
9th ICSE
IMPORTANT
Earn 100

Explain why the solute cannot be separated from the solution by filtration.

Important Questions on Water

MEDIUM
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 3 - Water>Questions>Q 16
Explain why some solutes are precipitated out when a hot saturated solution of KNO3 is cooled at room temperature.
HARD
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 3 - Water>Questions>Q 16
Explain why washing soda crystals become coated with a white powder when exposed to air.
MEDIUM
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 3 - Water>Questions>Q 16
Explain why fused CaCl2 or concentrated H2SO4 is used in a desiccator.
MEDIUM
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 3 - Water>Questions>Q 16
Explain why a hot solution of nitre forms crystals as it cools.
MEDIUM
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 3 - Water>Questions>Q 16
Explain why effervescence is seen when a bottle of soda water is opened.
HARD
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 3 - Water>Questions>Q 17
What are solubility curves? Give their uses.
HARD
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 3 - Water>Questions>Q 18
Normally, the solubility of a crystalline solid increases with temperature. Does it increase uniformly in every case? Name a substance whose solubility:
increases rapidly with temperature.
HARD
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 3 - Water>Questions>Q 18
Normally, the solubility of a crystalline solid increases with temperature. Does it increase uniformly in every case? Name a substance whose solubility:
increases gradually with temperature.