Physics · Industrial Ventilation Standards
औद्योगिक वेंटिलेशन (industrial ventilation) के लिए कौन सा भारतीय मानक (IS) कोड अनुशंसित है?
- 1IS 2526 : 1963
- 2IS 2440 : 1975
- 3IS 1950 : 1962
- 4IS 3103 : 1975✓
सही उत्तर देखें
IS 3103 : 1975
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