Computer · Highway Engineering and Construction Materials
बिटुमन निम्नलिखित में से किस प्रक्रिया से प्राप्त किया जाता है?
- 1पेट्रोलियम का प्रभाजी आसवन✓
- 2पेट्रोलियम का भंजक आसवन
- 3कोलतार का भंजक आसवन
- 4प्राकृतिक रूप से पाए जाने वाले अयस्क
सही उत्तर देखें
पेट्रोलियम का प्रभाजी आसवन
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