Lead pencil contains

A. Graphite

B. Lead sulphide

C. Lead

D. Both (B) & (C)

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  17. Carbon supply in pack carburising process is in the form of
  18. Age hardening is connected with
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  25. Wrought iron is not
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  27. The most abundant metal present in the earth's crust is;
  28. The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed…
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