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: Blue baby syndrome (A)
Methemoglobinemia, characterized by reduced oxygen-carrying capacity of hemoglobin, is linked to high nitrate concentrations in drinking water, especially in infants.Thus, A matches III.

Step 2: Keshan disease (B)
Keshan disease, a heart condition (cardiomyopathy), results from selenium deficiency.Thus, B matches IV.

Step 3: Gas bubble disease (C)
Gas bubble disease, primarily affecting aquatic organisms, occurs due to environmental supersaturation with gases like nitrogen or oxygen, representing "Excess dissolved oxygen".Thus, C matches I.

Step 4: Itai-itai disease (D)
Itai-itai, a painful bone disease, stems from chronic cadmium (Cd) poisoning in drinking water and food.Thus, D matches II.Conclusion: The matching is A-III, B-IV, C-I, D-II.