engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Fitter Joining Welding

गैस वेल्डन में, प्रयोग की गई ऑक्सी-एसिटिलीन गैस की ज्वाला का तापमान कितना होगा?

1
1200°C
2
1800°C
3
2400°C
4
3200°C
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