Consider the following : Crude oil is a direct source of: 1. asphalt 2. paraffin wax 3. fatty acids 4. gas oil Which of the above are correct ?

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Q: 80 (NDA-II/2008)
Consider the following : Crude oil is a direct source of:
1. asphalt
2. paraffin wax
3. fatty acids
4. gas oil
Which of the above are correct ?

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,43,27,9,9,9,43

keywords: 

{'crude oil': [1, 0, 1, 1], 'gas oil': [0, 0, 1, 0], 'direct source': [0, 0, 1, 0], 'fatty acids': [0, 0, 1, 0], 'paraffin wax': [0, 0, 1, 0], 'asphalt': [0, 0, 1, 1]}

Option 1 states that asphalt is a direct source of crude oil, which is incorrect. Asphalt is actually a product derived from the refining process of crude oil, and it is not a direct source of crude oil.

Option 2 states that paraffin wax is a direct source of crude oil, which is also incorrect. Paraffin wax is derived from petroleum, which is a product of the refining process of crude oil.

Option 3 states that fatty acids are a direct source of crude oil, which is incorrect. Fatty acids are usually obtained from animal or vegetable fats and oils, and are not a direct source of crude oil.

Option 4 states that gas oil is a direct source of crude oil, which is correct. Gas oil, also known as diesel fuel, is one of the products that can be obtained directly from crude oil through the refining process.

Therefore, the correct answer is option 4: 1, 2, and 4 only.