Q. No.The incorrect statement about carbon monoxide is-
1.
It reduces the oxygen-carrying ability of blood.
2.
The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.
3.
It is produced due to incomplete combustion.
4.
It forms carboxyhaemoglobin.
Select the correct statement from the following statements?
(1) CO which is a major pollutant resulting from the combustion of fuels in automobiles plays a major role in photochemical smog
(2) Classical smog has an oxidizing character while the photochemical smog is reducing in character
(3) Photochemical smog occurs in day time whereas the classical smog occurs in the morning hours
(4) During formation of smog the level of ozone in the atmosphere goes down
Incorrect statement among the following is:
1. Oxides of sulphur, nitrogen, and carbon are the most widespread air pollutant.
2. pH of drinking water should be between 6.5 and 8.5.
3. Concentration of dissolved oxygen below 6 ppm is good for the growth of fish.
4. Clean water would have a BOD value of less than 5 ppm.
The aromatic compound that is present as particulate among the following is :
1. Benzene
2. Toulene
3. Nitrobenzene
4. Polycyclic hydrocarbons
When rain is accompanied by a thunderstorm, the pH value of the collected rain water is :
1. Dependent upon the amount of dust in the air.
2. Slightly lower when rainwater is without a thunderstorm.
3. Slightly higher when the thunderstorm is not there.
4. Unaffected by the occurrence of thunderstorms.
Which of the following is not one of the prime health risks associated with greater
UV radiations through the atmosphere due to depletion of stratospheric ozone?
1. Damage to eyes
2. Increased liver cancer
3. Increased skin cancer.
4. Reduced Immune system
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