Class 10
Chapter 2 Class 10 - Acids, Bases and Salts

Assertion (A): Plaster of Paris is used by doctors for  setting fractured bones.  

Reason (R): When Plaster of Paris is mixed with  water and applied around the fractured limbs, it  sets into a hard mass.  

 

Directions: In the following questions, a statement  of assertion (A) is followed by a statement of  reason (R). Mark the correct choice as:  

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

(b) Both assertion (A) and reason (R) are true but  reason (R) is not the correct explanation of  assertion (A).  (c) Assertion (A) is true but reason (R) is false.  

(d) Assertion (A) is false but reason (R) is true.  

 

Answer 

Plaster of Paris-Teachoo.jpg

Plaster of Paris when mixed with  water and applied around the fractured limbs, it  sets into a hard mass and keeps the bone joints in a fixed position. 

So, it is commonly used for setting  fractured bones. 

 

Thus,

  • Assertion is true
  • Reasoning is true
  • And Reasoning is the correct explanation of Assertion

So, the correct answer is (a)

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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo