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CDS II 2014
Question #620
Chemistry
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Which of the following is a good lubricant?
A
Diamond powder
B
Graphite powder
C
Molten carbon
D
Alloy of carbon and iron
Pick an option above to test your answer
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Subject:
Science & Technology
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Which of the following is a good lubricant? | CDS II 2014 Solved PYQ | UPSCGPT