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Q.

(A): A 0.2% solution of phenol is antiseptic while one percent solution is a disinfectant.

(R): Same substance can act as an antiseptic as well as disinfectant by varying the concentration.

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a

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

b

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

c

Both (A) and (R) are false

d

(A) is true but (R) is false

answer is B.

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Detailed Solution

  • Disinfectants are applied to inanimate objects such as floors, drainage system, instruments, etc.
  • Same substances can act as an antiseptic as well as disinfectant by varying the concentration.
  • For example, 0.2 per cent solution of phenol is an antiseptic while its one percent solution is disinfectant.
  • Both (A) and (R) are true but (R) is not the correct explanation of (A).
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