Q. No.Of the ultraviolet radiation that reaches the Earth's surface, more than 95% is:
1. UV A
2. UV B
3. UV C
4. UV radiation reaching Earth has an equal percentage of UV A, UV B, and UV C
1. UV A
2. UV B
3. UV C
4. UV radiation reaching Earth has an equal percentage of UV A, UV B, and UV C
Human interference in the phosphorus cycle by overuse or careless use of phosphorus fertilizers can most commonly lead to:
1. increased soil salinity
2. accelerated eutrophication of water bodies
3. desertification
4. soil erosion and nutrient depletion
The most effective solution to the growing e-waste problem is:
1. dumping in sanitary landfills
2. incineration
3. recycling
4. reduction in the production of electronic appliances
Which of the following will be responsible for a pollutant to bioaccumulate in a primary consumer?
1. It is not taken up by plants
2. It is fatal in very low concentrations
3. It easily gets broken down in the body
4. It degrades slowly in the environment
Identify the incorrectly matched pair:
| 1. | Water logging: Increased salinity of the soil |
| 2. | Jhum cultivation: Deforestation |
| 3. | Three-mile Island and Chernobyl: Sites where tsunami led to a large loss of human lives |
| 4. | Excess nitrates in drinking water: Blue baby syndrome |
Consider the following two statements:
I. Three-way catalytic converters have rendered two-way catalytic converters obsolete.
II. Leaded petrol does not inactivate the three-way catalytic converter
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct but II is incorrect.
4. Both I and II are incorrect.
Match the legislation in Column I with the corresponding year in Column II and select the correct answer from the codes given:
|
|
Legislation |
|
Year |
|
A |
Air [Prevention and Control of Pollution] Act |
P |
1974 |
|
B |
Environment [Protection] Act |
Q |
1981 |
|
C |
Water [Prevention and Control of Pollution] Act |
R |
1986 |
|
D |
National Forest Policy |
S |
1988 |
Codes
| Options: | (a) | (b) | (c) | (d) |
| 1. | R | Q | S | P |
| 2. | Q | R | P | S |
| 3. | Q | R | S | P |
| 4. | R | Q | P | - S |
A genetically modified organism has been tried for mitigating the effects of:
1. Oil spills
2. Degrading CFCs
3. Reduce methane emission
4. Removing DDT from water bodies
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | Slash-and-char is an alternative to slash-and-burn that has a lesser effect on the environment. |
| Reason (R): | It is the practice of charring the biomass resulting from the slashing, instead of burning it. |
In the light of the above statements, choose the most appropriate answer from the options given below :
| 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
© 2024 GoodEd Technologies Pvt. Ltd.