[TBQ.XI.(2)]
Reason type question

Assertion (A) : The process of conversion of liquid water to its vapours by heating the liquid is called boiling.
Reason (R) :The process of conversion of water vapours to liquid by cooling the vapours is called condensation.

(a) Both A and R are true and R is the correct explanation of A.

(b) Both A and R are true but R is not the correct explanation of A.

(c) A is true but R is false.

(d) A is false but R is true.

Open in App

Solution

(b) Both A and R are true but R is not the correct explanation Of A.
Boiling and condensation are different to each other.
In boiling water gets converted into its vapour, means it is an endothermic reaction.
While in condensation water vapour gets converted into liquid state. i.e. it is an exothermic reaction.

Suggest Corrections

Similar questions

In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question.

Assertion (A) The temperature at which vapour pressure of a liquid is equal to the external pressure is called boiling temperature.

Reason (R) At high altitude atmospheric pressure is high.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is the correct explanation of A

(d) A is false but R is true.

In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question.

Assertion (A) Liquids tend to have the maximum number of molecules at their surface.

Reason (R) Small liquid drops have spherical shape.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is the correct explanation of A

(d) A is false but R is true

In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question.

Assertion (A) At critical temperature liquid passes into gaseous state imperceptibly and continuously.

Reason (R) The density of liquid and gaseous phase is equal to crictical temperature.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not the correct explanation of A

(d) A is false but R is true

Directions: In the following question, a statement of assertion is followed by a statement of reason.

Mark the correct choice as:

(A) If both assertion and reason are true and the reason is the correct explanation of assertion.

(B) If both assertion and reason are true but the reason is not the correct explanation of assertion.

(D) If the assertion is false but the reason is true.

Assertion: Water is not used as a barometric liquid.

Reason: Water easily boils off at 100⁰C.

Q. [TBQ.XI.(4)]
Reason type question
Assertion (A) : The formation of iron oxide from iron is a chemical change.
Reason (R) : For the rust to form from iron, it must be exposed to air and water.

(a) Both A and R are true and R is the correct explanation of A.

(b) Both A and R are true but R is not the correct explanation of A.

(c) A is true but R is false.
.
(d) A is false but R is true.

Join BYJU'S Learning Program