Q. Steel balls for ball bearings are hardened to

(A) 100 VPN
(B) 400-700 VPN
(C) 700-800 VPN
(D) 150-200 VPN

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✅ Correct Answer: (C) 700-800 VPN

Published by Mr. Dubey ⭐ 109.99K Points at 18-Sep-2023 09:17 pm in

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