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The hardest substance available on earth is?

 

 A.    Platinum

 B.    Diamond

 C.    Quartz

 D.    Gold 

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Question ajoutée par mohamed sabeen , QHSE Manager , Novus catering service
Date de publication: 2017/05/26
Afdaleddin Ali Eid Saou
par Afdaleddin Ali Eid Saou , Interpreter and Translator , US Army

the hardest naturally occurring substance found on Earth is Diamond 

Mohammad Mustahsan  Rizvi
par Mohammad Mustahsan Rizvi , Correspondent , Prasar Bharati, Doordarshan

The hardest substance is b. Diamond

VISHAK J
par VISHAK J , Associate Geophysicist , FUGRO Survey India

B.Diamond (Alloropes of carbon)

Tariq abbas
par Tariq abbas , Human Resources Assistant , Integrated Regional Support Program (IRSP) Pakistan

the diamond is the hardest 

B. Dimond

Muhammad Arif SYAHRIJAL
par Muhammad Arif SYAHRIJAL , Mine Engineering Manager , Sibelco Asia

It is Diamond, Please refer to Moh's scale in General Geology

B Diamond

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Utilisateur supprimé
par Utilisateur supprimé

The hardest substance available on earth is option B. Diamond

Rana Muhammad Adnan Akbar
par Rana Muhammad Adnan Akbar , Assistant Manager Facilities , EFS Facilities Services

C. Quartz is my guess on this question

Saif Abdulrahman
par Saif Abdulrahman , equipment manager , AWI

D. Gold is the incorrect hard substance on earth ...

Diamond is hardest substance on earth.

The hardest substance on earth is diamond (10 on the Mohs scale)

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