Q: What is the necessary range of composition of iron oxide in a lime which is produced from carboniferous limestone and magnesium limestone? कार्बोनिफेरस चूना पत्थर और मैग्नीशियम चूना पत्थर से निर्मित चूने मेें आयरन ऑक्साइड संघटन की आवश्यक परास कितनी होती है?
A.
13% to15%/13% से15%
B.
2% to 5%/2% से 5%
C.
20% to 30%/20% से 30%
D.
16% to 19%/16% से 19%
Correct Answer:
Option D -
Explanations:
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