Question

give answer of this question​

Answer 1

Answer:

Last Option

Loha Is The Answer

Answer 2

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${\purple{{\sf{OPTION \: (B) }}}}{\blue{{\sf{ \: IS \: CORRECT}}}}{\red{{\sf{CROMIUM}}}}$

${\green{{\sf{EXPLANATION :}}}}$

• While there are several parameters for classifying metals in term of hardness, chromium (687-6500 MPa) is classified as the hardest known metal in earth.