Select Chapter Topics:
- 1(current)
Q. No.Which one of the following is not a common component of Photochemical Smog?
1. Ozone
2. Acrolein
3. Peroxyacetyl nitrate
4. Chlorofluorocarbons
Subtopic: Â Air Pollution - Greenhouse Effect |
 67%
Level 2: 60%+
AIPMT - 2014
Hints
Which one of the following statements is not true?
| 1. | Clean water would have a BOD value of 5 ppm. |
| 2. | Fluoride deficiency in drinking water is harmful. Soluble fluoride is often used to bring its concentration upto 1 ppm. |
| 3. | When the pH of rainwater is higher than 6.5, it is called acid rain. |
| 4. | Dissolved Oxygen (DO) in cold water can reach a concentration upto 10 ppm. |
Subtopic: Â Air Pollution - Acid Rain |Â Water Pollution - Water Pollution & Portable Water |
 71%
Level 2: 60%+
NEET - 2013
Hints
The incorrect statement among the following regarding photochemical smog is:
| 1. | Carbon monoxide does not play any role in photochemical smog formation. |
| 2. | Photochemical smog is an oxidising agent in character. |
| 3. | Photochemical smog is formed through a photochemical reaction involving solar energy. |
| 4. | Photochemical smog does not cause irritation in the eyes and throat. |
Subtopic: Â Air Pollution - Smog |
 81%
Level 1: 80%+
AIPMT - 2012
Hints
Which one of the following statements is not true?
| 1. | Concentration of dissolved oxygen below 5 ppm is good for the growth of fish. |
| 2. | Clean water would have a BOD value of less than 5 ppm. |
| 3. | Oxides of sulphur, nitrogen, and carbon are the most widespread air pollutant. |
| 4. | pH of drinking water should be between 6.5-8.5. |
Subtopic: Â Water Pollution - Biological Oxygen Demand |
 67%
Level 2: 60%+
AIPMT - 2011
Hints
Green chemistry means such reactions that:
| 1. | Produce colour during reactions. |
| 2. | Reduce the use and production of hazardous chemicals. |
| 3. | Are related to the depletion of the ozone layer. |
| 4. | Study the reaction in plants. |
Subtopic: Â Air Pollution - Greenhouse Effect |
 89%
Level 1: 80%+
AIPMT - 2008
Hints
Select Chapter Topics:
- 1(current)
Q. No.
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