Question

Assertion: A balloon kept near sun will burst after sometime
Reason: Due to the sun’s heat, the kinetic energy of particles in the balloons increases and it expands. It continues to expand and comes to a stage when the balloon bursts
A. Both assertion and reason are correct and reason is correct explanation of assertion
B. Both assertion and reason are correct and reason is not the correct explanation of assertion
C. Assertion is correct and reason is not correct
D. Both assertion and reason are wrong

Answer 1

Hint: Everything around us is made up of matter. This includes a balloon and what’s inside it. Matter comes in four different forms or states, which go (generally) from lowest to highest energy. They are: solids, liquids, gases and plasmas. Gases, such as the air or helium inside a balloon will take the shape of the containers they are present in. They spread out so that the space is filled up evenly with gas molecules. The gas molecules are not connected

Complete step by step answer:
The average kinetic (motional) energy changes in response to temperature. When gas molecules are heated, their average kinetic energy also increases. This means they will move faster and have more frequent and harder collisions inside of the balloon.
The kinetic energy of gases increases with the increase in temperature. When the balloon is kept in the sun,the air present in it absorbs heat energy of the sun, the kinetic energy of gaseous particles inside the balloons also gets increased and the balloon expands. This will increase the pressure on the walls of the balloon. It will continue to expand and there will come a stage when the balloon will burst.

Hence, option “A” is correct

Note:
If the temperature is increased, the average speed and kinetic energy of the gaseous molecules is also increased. If the volume is kept constant, the increased speed of the gaseous molecules will result in more frequent and more forceful collisions with the walls of the container, therefore increasing the pressure applied by the gas on the walls of the container.