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Which of the following do not exhibit Tyndall effect ?
Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
Concept: undefined >> undefined
Which of the following are chemical changes and which physical ? Give reason.
- a glass bottle breaking
- coal burning in air
- making a cake
- wool being knitted into a sweater
Concept: undefined >> undefined
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Which of the following are chemical changes and which physical ? Give reason.
- a glass bottle breaking
- coal burning in air
- making a cake
- wool being knitted into a sweater
Concept: undefined >> undefined
Define solubility of a substance. How does it vary with temperature ?
Concept: undefined >> undefined
Define solubility of a substance. How does it vary with temperature ?
Concept: undefined >> undefined
What do you understand by the statement " the solubility of copper sulphate in water at 20°C is 20.7 g" ?
Concept: undefined >> undefined
What do you understand by the statement " the solubility of copper sulphate in water at 20°C is 20.7 g" ?
Concept: undefined >> undefined
What is the effect of temperature on the solubility of solids in liquids ?
Concept: undefined >> undefined
What is the effect of temperature on the solubility of solids in liquids ?
Concept: undefined >> undefined
What is meant by a solution?
Concept: undefined >> undefined
What is meant by a solution?
Concept: undefined >> undefined
What is a suspension ? Give two examples of suspensions.
Concept: undefined >> undefined
What is a suspension ? Give two examples of suspensions.
Concept: undefined >> undefined
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Concept: undefined >> undefined
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Concept: undefined >> undefined
Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not ?
Concept: undefined >> undefined
Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not ?
Concept: undefined >> undefined
How would you prepare a saturated solution of sodium chloride in water at 25°C ? What will happen if this solution is cooled to 10°C ?
Concept: undefined >> undefined
How would you prepare a saturated solution of sodium chloride in water at 25°C ? What will happen if this solution is cooled to 10°C ?
Concept: undefined >> undefined
One of the following is a solid foam. This one is :
Concept: undefined >> undefined
