Question

The following question consists of two statements- Assertion (A) and Reason (R). Answer the question selecting the suitable option given below. a. Both A and R are true and R is the correct explanation of A b. Both A and R are true and R is not the correct explanation of A c. A is true but R is false. d. A is false but R is true. 1) Assertion (A): In pressure cooker temperature of water becomes more than 100. C Reason (R) : Boiling point is directly proportional to pressure acting on liquid. 2) Assertion (A): ice mixed with common salt is freezing mixture having temperature below 0. C 3) Reason (R) : The salt raises the freezing point of ice. 4) Assertion (A): Dry ice is solid CO2 Reason (R) : Dry ice is same as ice.

Answer 1

Answer:

both assertion and reason is correct

Answer 2

1. Assertion and reasoning are both correct and the reason is the correct explanation of the assertion. Option a

2.Assertion and reasoning are both correct and the reason is the correct explanation of the assertion Option a

3.The assertion is correct and the reason is false option c

Explanation:

• on adding particular salt boiling point and melting point of a substance changes. For example if we add more amount of pressure then the melting point of the substance decreases.

• And if we add certain substances like salt then the melting point it becomes below zero degree celsius. These have many applications in daily today life and stock these are known as depression of freezing point

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