Q: 1 (IAS/2011)
question_subject:
Ecology
question_exam:
IAS
stats:
0,317,240,39,317,52,149
keywords:
{'traditional asphalt': [0, 0, 0, 1], 'asphalt': [0, 0, 1, 1], 'bioasphalt': [0, 0, 0, 1], 'fossil fuels': [0, 0, 0, 5], 'organic waste materials': [0, 0, 0, 1], 'full exemption': [0, 0, 0, 1], 'basic customs duty': [0, 0, 0, 1], 'nonrenewable resources': [0, 0, 0, 1], 'roads': [0, 1, 0, 2], 'importance': [2, 0, 0, 9]}
The correct answer is "1, 3, and 4 only".
Bioasphalt is a type of asphalt that is made from non-petroleum-based renewable resources, such as organic waste materials, including cooking oil, sugar, and rice hulls.
Statement 1 is correct. Unlike traditional asphalt, bioasphalt is not based on fossil fuels.
Statement 2 is incorrect. Bioasphalt is made from renewable resources and not from nonrenewable resources.
Statement 3 is correct. Bioasphalt can be made from organic waste materials.
Statement 4 is also correct. The use of bioasphalt for surfacing roads is more environmentally friendly than traditional asphalt because it reduces greenhouse gas emissions and is less harmful to the environment.
Therefore, the correct answer is "1, 3, and 4 only".