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प्रश्न
Why does this happen?
What you see in the picture.
उत्तर
The picture shows two things that are present in the tub of water. One is a balloon that floats on the surface of the water while the other is an apple that sinks to the bottom of the tub. The balloon floats on the surface of the water because it has less density as compared to the density of the water whereas the apple sinks to the bottom of the tub because it has more density than water.
संबंधित प्रश्न
Explain why, there is no rise in temperature of a substance when it undergoes a change of state though heat is supplied continuously.
Explain briefly, how gases can be liquefied.
How does applying pressure (or compression) help in the liquefaction of a gas ?
Name the phenomenon which causes the following changes:
Conversion of ice into water
State the property of the following substance.
Lead chloride reacts with barium sulphate to give a white precipitate of lead sulphate.
Riya pours some water from her bottle into another bottle. Does it change the shape of the water?
What will happen if....? And why?
An axe is made of rubber.
Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.
Can the change be reversed or is it irreversible?
Fill in the blank with the appropriate word of the statement given below:
Change of milk of curd is a _______ change.
Complete the blank with reference to interconversion of matter on the basis of kinetic theory-with the word ‘increase’, ‘decreases’, ‘gain’, ‘lose’, or ‘overcome’ in the following case.
During vaporization, the liquid particles ____________ energy.
