The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen by (appro.)

Related Mcqs:

1. The haemoglobin has maximum affinity for the gas:

   A. CO
   B. SO2
   C. O2
   D. NO

2. Carbon monoxide is a major pollutant of:

   A. Water
   B. Air
   C. Noise
   D. Soil

3. Carbon monoxide is a pollutant because:

   A. It reacts with O2
   B. It inhibits glycolysis
   C. Reacts with haemoglobin
   D. Makes nervous system inactive

4. Carbon monoxide is a poisonous gas, 1% of which in the air can kill a person in:

   A. No time
   B. In ten minutes
   C. In five minutes
   D. In fifteen minutes

5. Which of the following, when inhaled dissolves in the blood haemoglobin rapidly then O2?

   A. SO2
   B. CO
   C. N2O
   D. O3

6. If carbon dioxide is withdrawn from the biosphere, which organism would first experience negative effect?

   A. Primary consumers
   B. Producers
   C. Secondary consumers
   D. Tertiary consumers

7. Greenhouse effect is due to:

   A. CO
   B. CO2
   C. NO2
   D. PO4

8. Green-house effect is due to the presence of:

   A. Ozone layer in the atmosphere
   B. Infra-red radiations
   C. Moisture in the atmosphere
   D. CO2 in the atmosphere

9. The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:

   A. Phosphene
   B. SiF4
   C. Dust
   D. Halogens

10. BOD is the amount of oxygen:

    A. Present in water
    B. Utilized by organisms in water
    C. Utilized by micro-organisms for decomposition
    D. Demanded by the producers for the production of food