Question

Match the following

	ListI		List II
A	Methemaglobinemia	I	$1ppm$ of dissolved oxygen in water
B	Kidney damage	II	$1000ppb$ of lead in drinking water
C	Bones and teeth damade	III	BOD of drinking water is $2ppm$
D	Growth of fish is stopped	IV	$2000ppm$ of nitrates in drinking water
		V	$50ppm$ of fluoride in drinking water

The correct answer is

• A. A -IV , B -II , C -V , D - I
• B. A -IV , B -III , C -V , D -I
• C. A -IV , B -II , C -I , D - V
• D. A -III , B - II , C -I , D -V

Answer 1

Answer: (A)

$A\to IV,B\to II,C\to V,D\to I$

Methenaglobinemia is a condition caused by elevated levels of methenoglobin in the blood is due to the presence of $2000ppm$ or above nitrate in drinking water.

Kidney damage is due to the presence of $1000ppm$ of lead in drinking water. Lead get deposit in the kidney and damages it.

Bones and teeth damages due to presence of $50ppm$ or above fluoride in drinking water. Less than $1ppm$ of dissolved oxygen in watcr can stop the growth of fish due to less supply of oxygen.