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Question

Match the colour changes occurs in the mucus membrane with that of possible poisoning.

LIST-I
(Colour changes in the mucus membrane)
LIST-II
(Poison)
A. GreenI. CO
B. YellowII. $CuSO_4$
C. BlueIII. $HNO_3$
D. Cherry redIV. $FeSO_4$


Choose the correct answer from the options given below:

The correct answer is
A-IV, B-III, C-II, D-I

The question requires matching specific color changes observed in mucus membranes with the corresponding poison.

Matching Poisoning Symptoms to Causes

Correct Matching:

  • A. Green mucus membrane is associated with poisoning by IV. $FeSO_4$ (Ferrous Sulfate).
  • B. Yellow mucus membrane is associated with poisoning by III. $HNO_3$ (Nitric Acid).
  • C. Blue mucus membrane is associated with poisoning by II. $CuSO_4$ (Copper Sulfate).
  • D. Cherry red mucus membrane is associated with poisoning by I. CO (Carbon Monoxide).

Explanation of Matches:

  • $FeSO_4$ (Ferrous Sulfate): Iron poisoning can lead to greenish discoloration of the skin and mucous membranes due to the oxidation of iron.
  • $HNO_3$ (Nitric Acid): Ingestion of nitric acid, a strong acid, can cause corrosive damage and may result in a yellowish or greenish-yellow appearance of the mucous membranes.
  • $CuSO_4$ (Copper Sulfate): Copper sulfate poisoning can manifest as bluish discoloration of the skin and mucous membranes.
  • CO (Carbon Monoxide): Carbon monoxide binds strongly to hemoglobin, forming carboxyhemoglobin, which gives the blood and tissues, including mucus membranes, a characteristic cherry-red color.

Based on these matches, the correct option is A-IV, B-III, C-II, D-I.

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