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प्रश्न
Asmita went to buy an earthen pot. There she saw many things kept for sale.
From what substance has the potter made all the things?
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उत्तर
Potter makes all the things from soil or mud.
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संबंधित प्रश्न
Intermolecular space is maximum in .......... less in ............ and the least in .........
Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............
Name the processes involved in two cases.
Which of the following will show Tyndall effect ? Why ?
- Salt solution
- Starch solution
- Milk
- Copper sulphate solution
What is a suspension ? Give two examples of suspensions.
100 mL of water at room temperature of 25°C is taken in a beaker and a little of solid S is dissolved in it by stirring to obtain a solution X. More and more of solid S is added to the solution with constant stirring, while keeping the temperature of solution constant at 30°C. After some time it is observed that no more solid dissolves in water and at the same time some solid is also left undissolved at the bottom of the beaker.
- The contents of beaker are filtered through a filter paper to obtain solution Y in the form of a filtrate.
- What name is given to solutions like X ?
- What name is given to solutions like Y ?
- What will you observe if the solution Y at 30°C is cooled down to 10°C by keeping the beaker in crushed ice ? Why ?
- What term is used to denote the amount of solid dissolved in 100 grams of water in a solution lie Y ?
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
Explain the meaning of the term ‘matter’.
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
