Computer · Building Materials
भवन निर्माण में सबसे अधिक उपयोग की जाने वाली सीलन-रोधी (damp-proofing) सामग्री कौन सी है?
- 1सीमेंट का घोल
- 2पैराफिन मोम
- 3सीमेंट कंक्रीट
- 4बिटुमेन (Bitumen)✓
सही उत्तर देखें
बिटुमेन (Bitumen)
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