Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Polluted water may have a value of BOD of the order of 17 ppm. Reason R: BOD is a measure of oxygen required to oxidise both the biodegradable and nonbiodegradable organic material in water. In the light of the above statements, choose the most appropriate answer from the options given below.

Question

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Polluted water may have a value of BOD of the order of 17 ppm. Reason R: BOD is a measure of oxygen required to oxidise both the biodegradable and nonbiodegradable organic material in water. In the light of the above statements, choose the most appropriate answer from the options given below. (A) Both A and R are correct and R is the correct explanation of A. (B) Both A and R are correct but R is NOT the correct explanation of A. (C) A is correct but R is not correct. (D) A is not correct but R is correct.

Tardigrade Admin · Accepted Answer

Clean water have BOD less than 5 ppm while highly polluted water has BOD greater or equal to 17 ppm. So, assertion is correct. BOD is measure of oxygen required to oxidise only bio-degradable organic matter. So, reason is false.

Both A and R are correct and R is the correct explanation of A.

Both A and R are correct but R is NOT the correct explanation of A.

A is correct but R is not correct.

A is not correct but R is correct.

Clean water have BOD less than 5ppm while highly polluted water has BOD greater or equal to 17ppm. So, assertion is correct. BOD is measure of oxygen required to oxidise only bio-degradable organic matter. So, reason is false.

Clean water have $BO D$ less than $5 pp m$ while highly polluted water has $BO D$ greater or equal to $17 pp m$ . So, assertion is correct. $BO D$ is measure of oxygen required to oxidise only bio-degradable organic matter. So, reason is false.