in this video we cover multiple choice questions MCQ's of mine gases like fire damp, black damp, white damp, nitrous fumes, stink damp, sulfur dioxide, gob stink and after damp. we try to cover all important and necessary questions to mine gases.
best mininf MCQ video in hindi.
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Негізгі бет Mine Gases Part 2, All IMP MCQs covered in Hindi, By Mining papa
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