- 1(current)
Q. No.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.
hazardous chemicals.
Among the following, the one that is not a greenhouse gas is:
1. Sulphur dioxide
2. Nitrous oxide
3. Methane
4. Ozone
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. |
Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?
1. N2O5
2. NO2
3. N2O
4. NO
The liquefied gas that is used in dry cleaning along with a suitable detergent is-
1. Water gas
2. Petroleum gas
3. NO2
4. CO2
Which one of the following statements regarding photochemical smog is not correct?
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 photochemical reaction involving energy
4. Photochemical smog does not cause irritation in eyes and throat
A gas that is not common component of photochemical smog is-
1. Ozone
2. Acrolein
3. Peroxyacetyl nitrate
4. Chlorofluorocarbons
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. |
Which of the following statement is NOT true about acid rain?
| 1. | It is due to the reaction of SO2, NO2, and CO2 with rainwater |
| 2. | Causes no damage to monuments like the Taj Mahal. |
| 3. | It is harmful to plants. |
| 4. | Its pH is less than 5.6 |
- 1(current)
Q. No.
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