हिंदी

Iron ore, coking coal and limestone are required to make steel in the ratio of approximately? -

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प्रश्न

Iron ore, coking coal and limestone are required to make steel in the ratio of approximately?

विकल्प

  • 1 : 2 : 4

  • 2 : 1 : 4

  • 4 : 2 : 1

  • 4 : 1 : 2

MCQ

उत्तर

4 : 2 : 1

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