Practice question
कार्बन डाइऑक्साइड अग्निशामक सिलेंडर में कौन-सी गैस भरी होती है?
- 1कार्बन डाइऑक्साइड✓
- 2हीलियम
- 3वायु
- 4हाइड्रोजन
सही उत्तर देखें
कार्बन डाइऑक्साइड
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