Question

Match LIST-I with LIST-II
LIST-I (Disease)
(A) Blue baby syndrome
(B) Keshan disease
(C) Gas bubble disease
(D) Itai itai
LIST-II (Cause)
(I) Excess dissolved oxygen in drinking water
(II) Excess Cd in drinking water
(III) Excess nitrate ions in drinking water
(IV) Selenium deficiency

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

Hint:

Associate keywords with these environmental diseases: - Blue Baby \(\rightarrow\) Nitrate - Keshan \(\rightarrow\) Selenium - Itai-Itai \(\rightarrow\) Cadmium - Minamata \(\rightarrow\) Mercury

Answer 1

The Correct Option is C

Step 1: Analyze Blue baby syndrome (A)
This condition (methemoglobinemia) is caused by decreased oxygen-carrying capacity of hemoglobin. In infants, it is classically linked to high concentrations of nitrate in drinking water. Thus, A matches with (III).

Step 2: Analyze Keshan disease (B)
Keshan disease is a congestive cardiomyopathy (a heart condition) caused by a dietary deficiency of the mineral selenium. Thus, B matches with (IV).

Step 3: Analyze Gas bubble disease (C)
This is a condition primarily affecting aquatic organisms like fish, caused by environmental supersaturation with gases, typically nitrogen or oxygen. This can be considered as "Excess dissolved oxygen". Thus, C matches with (I).

Step 4: Analyze Itai-itai disease (D)
"Itai-itai" (Japanese for "it hurts, it hurts") is a painful bone disease caused by chronic poisoning from excess cadmium (Cd) in drinking water and food, first identified in Japan. Thus, D matches with (II). Conclusion: The correct matching is A-III, B-IV, C-I, D-II.