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प्रश्न
What is the effect of temperature on the solubility of solids in liquids ?
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उत्तर
Solubility of solids in liquids generally increases on increasing the temperature and decreases on decreasing the temperature of the solvent.
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संबंधित प्रश्न
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
Name the property which enables metals to be drawn into wires.
What elements do the following compounds contain ?
Sugar, Common salt
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
Which of the following will show Tyndall effect ? Why ?
- Salt solution
- Starch solution
- Milk
- Copper sulphate solution
Define Foam Give one example.
Name the process which can be used to recover salt from an aqueous salt solution.
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?
How will you separate water from mustard oil ?
How is cream separated from milk ?
Which one of the following scrap metal cannot be separated by magnetic separation ?
The given mixture contains three constituents A, B and C. The constituent A is a yellow coloured, solid element which dissolves in a liquid D. The constituent B is a blue coloured salt which is insoluble in liquid D but dissolves easily in another liquid E. The constitudent C is a liquid which is used in cooking food and forms a solid fat on hydrogenation.
(a) What do you think could (i) constituent A, and (ii) liquid D be ?
(b) What could (i) constituent B, and (ii) liquid E be ?
(c) What could liquid C be ?
(d) How will you separate the mixture containing A, B and C ?
Name one pair of liquids which can be separated by using a separating funnel.
Explain the meaning of the term ‘matter’.
Select the correct answer from A, B, C, D & E for the statement given below:
An atom or group of atoms _________ having a resultant charge.
Why wires cannot be drawn from materials such as stone or wood?
Boiling refers to the process by which a substance changes from the liquid to the gaseous state at its ______ point.
The fluidity of solids: ______.
Define the term matter.
