Question

Assertion: We feel cold on touching the ice.
Reason: Ice is a solid form of water.
(A).If both assertion and reason are true and the reason is a correct explanation of the assertion.
(B).If both assertion and reason are true and the reason is not a correct explanation of the assertion.
(C).Is the assertion is true but reason is false
(D).If both assertion and reason are false.

Answer 1

This type of questions have to be analyzed separately and then a common connection between the assertion and the reason to be drawn. In these types of questions always try to find whether the given statements are correct or not. Ice has very low energy as the molecule cannot move freely from one place to another so the kinetic energy of molecules present in ice is very low.

Complete answer:
The statement given in the assertion is: we feel cold on touching the ice. This statement is definitely correct as it is a common day to day phenomenon which all of us has observed. The temperature of ice is very less that’s why it feels cold when we touch ice.
The state given in reason is: ice is a solid form of water. This statement is definitely correct, water freezes into ice at 0 degree centigrade.
Assertion can also be explained on the basis of heat transfer as the temperature of our body is much more than that of the ice so the heat transfer from our body to the ice. This process is known as thermal conduction.

Hence the correct answer is option (B) i.e. both assertion and reason are true and the reason is not a correct explanation of the assertion.

Note:
Always remember that the amount of heat loss from one body will always be equal to the amount of heat gained by another body. Heat is also a form of energy so it can neither be created nor be destroyed it can only be changed from one form to another.