Advertisements
Advertisements
Question
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
Advertisements
Solution
The process of drying the shirt can be made faster in the following ways:
- Spread the shirt to increase the surface area which will increase the rate of evaporation.
- Put it in the sun to increase the temperature to increase the rate of evaporation.
- Keep it under the fan to increase the wind speed which increases the rate of evaporation.
APPEARS IN
RELATED QUESTIONS
Liquids have definite volume but do not have definite shape.
Name the processes involved in two cases.
Fill in the blank
Liquids have a definite ______
Name a non-metal which is a good conductor of electricity.
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
Which of the following will show Tyndall effect ? Why ?
- Salt solution
- Starch solution
- Milk
- Copper sulphate solution
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
One of the following liquids will leave behind a residue on heating. This one is :
Name the source from which nitrogen and oxygen are obtained on a large scale.
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?
How is the impurity of iron present in several substances removed in industries ?
What is chromatography ? State its two applications.
What's the solution?
We need to make a sherbet quickly for some guests. But we only have sugar candy in the house.
Write a few lines on the blackboard with a chalk. Now observe the chalk. What changes do you see in the chalk?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
How did she identify what she needed?
Atoms or groups of atoms having a charge are called ______.
In Aerosol the dispersed phase is liquid and the dispersion medium is gas.
Evaporation is always accompanied by ______ in temperature.
Define the term matter.
