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Which of the following grades of leads is the hardest?

Question

Which of the following grades of leads is the hardest?

A.

4B

B.

6H

C.

5H

D.

6B

Solution

Correct option is B

Among the grades listed, 6H is the hardest. The grading of pencil leads ranges from H (hard) to B (soft), with H grades indicating harder leads and B grades indicating softer leads. The higher the number before H, the harder the lead. Therefore, 6H is harder than 4B, 5H, and 6B.

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