The hardest natural substance is - (1) Diamond (2) Iron (3) Graphite (4) Copper

The hardest natural substance is - (1) Diamond (2) Iron (3) Graphite (4) Copper
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(1) Diamond Explanation: Diamond is the hardest naturally occurring substance found on Earth. It is due to the giant molecular structure of diamond in which each carbon atom is covalently bonded to four other carbon atoms
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Description : What is common between diamond and graphite?

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Description : Why do diamond and graphite have different physical properties even though they are both made of carbon?

Last Answer : Feel Free to Answer

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What are Carbon, diamond and graphite together called?

Description : What are Carbon, diamond and graphite together called?

Last Answer : Allotropes

Explain the difference in properties of diamond and graphite on the basis of their Structure?

Description : Explain the difference in properties of diamond and graphite on the basis of their Structure?

Last Answer : Ans.1. Diamond has three dimensional network whereas graphite has two successive layers. 2. Diamond has high density while graphite has low. 3. Diamond has sp3 and graphite has sp2 hybridised carbon atom.

Out of carbon(diamond)and carbon (graphite) whose enthalpy of formation is taken as zero?

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Graphite is used as anode and not diamond. Assign reason.

Description : Graphite is used as anode and not diamond. Assign reason. 

Last Answer : Ans. In graphite there are free electrons which helps in electricalconductivity. 

Why is diamond hard whereas graphite soft even through both are crystalline forms of carbon?

Description : Why is diamond hard whereas graphite soft even through both are crystalline forms of carbon?

Last Answer : The reason for difference is because of arrangement of carbon atoms.

Why is diamond hard whereas graphite soft even through both are crystalline forms of carbon?

Description : Why is diamond hard whereas graphite soft even through both are crystalline forms of carbon?

Last Answer : The reason for difference is because of arrangement of carbon atoms.

Generally Non-metals are not conductors of electricity. Which of the given is a good conductor of electricity? a) Diamond b) Graphite c) Sulphur d) Fullerene

Description : Generally Non-metals are not conductors of electricity. Which of the given is a good conductor of electricity? a) Diamond b) Graphite c) Sulphur d) Fullerene

Last Answer : b) Graphite

Diamond and Graphite are allotropes of which element?

Description : Diamond and Graphite are allotropes of which element?

Last Answer : Carbon.

Diamond and graphite are polymorphs of which of th following elements? w) magnesium x) carbon y) sulfur z) nitrogen

Description : Diamond and graphite are polymorphs of which of th following elements? w) magnesium x) carbon y) sulfur z) nitrogen

Last Answer : ANSWER: X -- CARBON