Q. No.What is bad ozone?
1. Ozone formed in the troposphere
2. Ozone found in the lower stratosphere
3. Ozone found in the upper stratosphere
4. Ozone formed in the lab
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Ozone hole develops over Antarctica each year between:
1. Early January and late April
2. Early March and late July
3. Late August and early October
4. Late September and early December
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The thickness of ozone layer is measured in :
1. Centimorgan (cM)
2. Dobson unit
3. Roentgens
4. Lux
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
UV rays are highly injurious to living organisms as:
1. they are part of invisible electromagnetic spectrum
2. they cannot be stopped by atmospheric gases
3. they are preferentially absorbed by DNA and proteins
4. they cause dissociation of atmospheric oxygen
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
CFC have a continuing effect on ozone layer as:
| 1. | the Cl atoms formed by them only act as catalysts in reactions causing degradation of ozone |
| 2. | the Cl atoms formed by them are used up in reactions causing degradation of ozone |
| 3. | they are being produced in increasing amounts all over the world |
| 4. | they are efficiently absorbed by the atmospheric water vapours |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which of the following is implicated in the causation of skin cancers and snow-blindness cataracts in humans?
| 1. | UV – A | 2. | UV - B |
| 3. | UV - C | 4. | None of the above |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The Montreal Protocol was signed in 1987 to:
| 1. | prevent deforestation around the world |
| 2. | control the emission of ozone-depleting substances |
| 3. | control the greenhouse gases |
| 4. | prevent hazards from radioactive nuclear wastes |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
| Assertion (A): | Most of the longer-wavelength UV-C radiation reaches the surface of the earth. |
| Reason (R): | Ozone is transparent to most UV-C. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
| Assertion (A): | Ozone hole over Antarctica develops each year between late August and early October. |
| Reason (R): | Ozone depletion occurs within the polar vortex. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
| Statement I: | The ozone hole is a “hole” where no ozone is present. |
| Statement II: | The ozone hole is a result of catalyzed ozone loss from chlorine and bromine compounds. |
1. Only Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Only Statement I is correct.
© 2024 GoodEd Technologies Pvt. Ltd.