Hardest allotrope of carbon is - (1) diamond (2) graphite (3) coke (4) lamp black

Hardest allotrope of carbon is - (1) diamond (2) graphite (3) coke (4) lamp black
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(1) diamond Explanation: Diamond is one well known allotrope of carbon. The hardness and high dispersion of light of diamond make it useful for both industrial applications and jewellery. Diamond is the hardest known natural mineral. This makes it an excellent abrasive and makes it hold polish and luster extremely well.
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Hardest allotrope of carbon is (1) diamond (2) graphite (3) coke (4) lamp black

Description : Hardest allotrope of carbon is (1) diamond (2) graphite (3) coke (4) lamp black

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The hardest form of carbon is (a) Coke (b) Graphite (c) Diamond (d) Charcoal

Description : The hardest form of carbon is (a) Coke (b) Graphite (c) Diamond (d) Charcoal

Last Answer : Ans:(c)

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Description : _____is not an allotrope of carbon. (1) Buckminsterfullerene (2) Carbon Doxide (3) Diamond (4) Graphite

Last Answer : (2) Carbon Doxide Explanation: Carbon is capable of forming many allotropes due to its valency. Well-known forms of carbon include diamond and graphite. Other allotropes in clude: include buckyballs (fullerenes), amorphous carbon, glassy carbon, carbon nanofoam, nanotubes,and others.

Hardest material is - (1) Tungsten (2) Diamond (3) Steel (4) Graphite

Description : Hardest material is - (1) Tungsten (2) Diamond (3) Steel (4) Graphite

Last Answer : (2) Diamond Explanation: Diamondsare commonly known as the hardest substance on earth, used in drill bits for cutting applications.

Graphite is a/an (A) Electrical insulator (B) Allotrope of carbon(C) Moderator used in nuclear reactor(D) Both (B) and (C)

Description : Graphite is a/an (A) Electrical insulator (B) Allotrope of carbon (C) Moderator used in nuclear reactor (D) Both (B) and (C)

Last Answer : (C) Moderator used in nuclear reactor

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

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

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Hardest material so far found is (A) Diamond (B) Graphite (C) Carborundum (D) Pumice stone

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Last Answer : (A) Diamond

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Description : Hardest materials so far found is (A) Diamond (B) Graphite (C) Carborundum (D) Pumice stone

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Carbon occurs in nature in the purest form as - (1) Diamond (2) Graphite (3) Carbon black (4) Coal

Description : Carbon occurs in nature in the purest form as - (1) Diamond (2) Graphite (3) Carbon black (4) Coal

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As which one of the following, does carbon occur in its purest form in nature? (1) Carbon black (2) Graphite (3) Diamond (4) Coal

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Description : Which of the following is used as filler in tyre of rubber? (1) Carbon black (2) Coal (3) Coke (4) Graphite

Last Answer : (1) Carbon black Explanation: The most common use (70%) of carbon black is as a pigment and reinforcing phase in automobile tires. Carbon black also helps conduct heat away from the tread and belt area of the tire, reducing thermal damage and increasing tire life.

Which of the following is used as filler in tyre of rubber ? (1) Carbon black (2) Coal (3) Coke (4) Graphite

Description : Which of the following is used as filler in tyre of rubber ? (1) Carbon black (2) Coal (3) Coke (4) Graphite

Last Answer : Carbon black

Diamond is an allotrope of (a) Tin (b) Silicon (c) Sulphur (d) Carbon

Description : Diamond is an allotrope of (a) Tin (b) Silicon (c) Sulphur (d) Carbon

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Carbon occurs in nature in the purest form as (a) Diamond (b) Graphite (c) Carbon black (d) Coal

Description : Carbon occurs in nature in the purest form as (a) Diamond (b) Graphite (c) Carbon black (d) Coal

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Which of the following is the purest form of Carbon? (1) Charcoal (2) Granite (3) Diamond (4) Graphite

Description : Which of the following is the purest form of Carbon? (1) Charcoal (2) Granite (3) Diamond (4) Graphite

Last Answer : (3) Diamond Explanation: Because the carbon atoms in diamond are more tightly bound than in graphite (as diamond is the hardest material known), it is more difficult for impurities to get into the diamond lattice and as a result diamonds are often more pure than graphite.

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

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

Last Answer : Ans. Enthalpy of formation of carbon in the form of graphite is taken as zero because it is a more commonly found in stable form of carbon.

In which of the following substances all carbon atoms are quaternary in nature ? (1) Graphite (2) Diamond (3) Teflon (4) Napthalene

Description : In which of the following substances all carbon atoms are quaternary in nature ? (1) Graphite (2) Diamond (3) Teflon (4) Napthalene

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What are Carbon, diamond and graphite together called? -General Knowledge

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

Last Answer : The answer is 'Allotropes'

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

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

Last Answer : Feel Free to Answer

Diamond, graphite, and fullerenes all forms of carbon, are examples of_______.

Description : Diamond, graphite, and fullerenes all forms of carbon, are examples of_______.

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What are Carbon, diamond and graphite together called?

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

Last Answer : Allotropes

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.

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

The hardest substance available in earth is – (1) Platinum (2) Silicon (3) Diamond (4) Gold

Description : The hardest substance available in earth is – (1) Platinum (2) Silicon (3) Diamond (4) Gold

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Which of the following is used as lubricant? (1) Graphite (2) Silica (3) Diamond (4) Iron Oxide

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Which of the following is used as lubricant? (1) Graphite (2) Silica (3) Diamond (4) Iron Oxide

Description : Which of the following is used as lubricant? (1) Graphite (2) Silica (3) Diamond (4) Iron Oxide

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Diamond is harder than graphite because of – (1) difference in layers of atoms (2) tetrahedral structure of diamond (3) difference of crystalline structures (4) None of these

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Which of the following is not an allotrope of carbon?

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Consider the following statements: 1. Carbyne is an allotrope of carbon. 2. Gasoline, used as a fuel in motor vehicles is a mixture of petrol and alcohol. 3. Petroleum is also known as 'liquid gold'. 4. The various components of crude oil are separated by fractional distillation. The correct statements are: (a) 1, 2 and 4 only (b) 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only

Description : Consider the following statements: 1. Carbyne is an allotrope of carbon. 2. Gasoline, used as a fuel in motor vehicles is a mixture of petrol and alcohol. 3. Petroleum is also known as 'liquid gold'. 4. The various components of crude ... (b) 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only

Last Answer : Ans:(b)

Fullerene is a newly discovered crystalline carbon allotrope, contains–

Description : Fullerene is a newly discovered crystalline carbon allotrope, contains–

Last Answer : 60 C atoms

Which allotrope of the carbon is used in cutting and drilling?

Description : Which allotrope of the carbon is used in cutting and drilling?

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The latest discovered allotrope of carbon?

Description : The latest discovered allotrope of carbon?

Last Answer : Graphene

Which allotrope of sulphur is insoluble in carbon disulphide? (A) Rhombic sulphur (B) Monoclinic sulphur (C) Plastic sulphur (D) Milk of sulphur

Description : Which allotrope of sulphur is insoluble in carbon disulphide? (A) Rhombic sulphur (B) Monoclinic sulphur (C) Plastic sulphur (D) Milk of sulphur

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Mohs scale hardest is diamond - what's the softest?

Description : Mohs scale hardest is diamond - what's the softest?

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Which of the following is the hardest element? (a) Copper (b) Diamond (c) Iron (d) Silicon

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The hardest material just prior to diamond in Mho's scale is (A) Topaz (B) Carborundum (C) Corundum (D) Calcite

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Description : The hardest material just prior to diamond in Mhos scale is (A) Topaz (B) Carborundum (C) Corundum (D) Calcite

Last Answer : (C) Corundum

Which of the following is the hardest substance? A. Copper B. Diamond (Answer) C. Iron D. Silicon

Description : Which of the following is the hardest substance? A. Copper B. Diamond (Answer) C. Iron D. Silicon

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The hardest rock is (A) Marble (B) Diamond (C) Talc (D) Quartz

Description : The hardest rock is (A) Marble (B) Diamond (C) Talc (D) Quartz

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The hardest substance available on earth is (1) Platinum (2) Diamond (3) Quartz (4) gold

Description : The hardest substance available on earth is (1) Platinum (2) Diamond (3) Quartz (4) gold

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Mohs scale hardest substance is diamond - what's the softest

Description : Mohs scale hardest substance is diamond - what's the softest

Last Answer : Talc

Assertion (A): Enthalpy of graphite is lower than that of diamond. Reason (R ) : Entropy of graphite is lower than that of diamond.

Description : Assertion (A): Enthalpy of graphite is lower than that of diamond. Reason (R ) : Entropy of graphite is lower than that of diamond.

Last Answer : Assertion (A): Enthalpy of graphite is lower than that of diamond. Reason (R ) : Entropy of ... False. D. If both Assertion & Reason are false.

What is common between diamond and graphite?

Description : What is common between diamond and graphite?

Last Answer : What is common between diamond and graphite?

Diamond and Graphite

Description : Diamond and Graphite

Last Answer : Find out the difference between : Diamond and Graphite

How do the physical properties of diamond compare to the physical properties of graphite?

Description : How do the physical properties of diamond compare to the physical properties of graphite?

Last Answer : Need answer

How are graphite and diamond the same and how are they different?

Description : How are graphite and diamond the same and how are they different?

Last Answer : They are both made of the element carbon, but the carbon atomsare in a different crystal pattern.