Read the given statements and select the correct option.
Statement 1 : Traffic jams are likely to cause giddiness, exhaustion, reduced vision, etc.
Statement 2 : Carbon monoxide from vehicles causes these problems by reducing `O_(2)`-carrying capacity of haemoglobin.

Options

A. Both statements 1 and 2 are correct.
B. Statement 1 is correct but statement 2 is incorrect
C. Statement 1 is incorrect but statement 2 is correct.
D. Both statements 1 and 2 are incorrect.

Answer

A

Explanation

50% carbon monoxide emissions are from automobiles. Normally CO has a brief residence in atmosphere and gets oxidised to `CO_(2)`. However, in congested and closed areas it proves quite harmful. Carbon monoxide combines with haemoglobin produces carboxyhaemoglobin of COHb. At 50 ppm, CO converts 7.5 % of haemoglobin into carboxyhaemoglobin with 8 hours. It impairs oxygen transport resulting in giddiness, headache, decreased vision, cardiovascular malfunction and asphxia.