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

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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(3) Diamond Explanation: The purest form of carbon is neither diamond nor graphene or graphite . It is 'Fullerene' , the purest form of carbon.
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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

Last Answer : (1) Diamond Explanation: There are three forms of pure carbon: Graphite, Coal and Diamond. All three are made up of elemental carbon, caol is the least pure when found in nature. Diamond is the purest form of Carbon.

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

Last Answer : Ans:(a)

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.

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

Last Answer : Diamond

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

Last Answer : (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 ... mineral. This makes it an excellent abrasive and makes it hold polish and luster extremely well.

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

Last Answer : diamond

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 : (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

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

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

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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.

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)

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_______.

Last Answer : Allotropes

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 purest form of water in nature is – (1) Rain water (2) Lake water (3) River water (4) Sea water

Description : The purest form of water in nature is – (1) Rain water (2) Lake water (3) River water (4) Sea water

Last Answer : (1) Rain water Explanation: Rainwater is often considered the purest form of water available on the Earth. The evaporation of water by the sun allows the salts and other impurities to be left behind out ... when it reaches the surface of the Earth due to the high pollution of air with toxic gases.

The purest form of water in nature is (1) Rain water (2) Lake water (3) River water (4) Sea water

Description : The purest form of water in nature is (1) Rain water (2) Lake water (3) River water (4) Sea water 

Last Answer : Rain water

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

Last Answer : (1) Graphite Explanation: Graphite is used as a lubricant due to its slippery nature. Due to its loosely intact carbon atoms or free electrons, they can move around easily from one place to another, making graphite a good conductor of electricity.

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

Last Answer : (1) Graphite Explanation: Graphite is used as a lubricant due to its slippery nature. Due to its loosely intact carbon atoms or free electrons, they can move around easily from one place to another, making graphite a good conductor of electricity.

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.

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

Description : 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

Last Answer : (1) difference in layers of atoms Explanation: Diamond is harder than graphite because diamond has a more complex structure. Diamond's structure is like many pentagons connected together, each pentagon ... together in some way. Graphite's structure is very loose, with its bonds forming layers.

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?

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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. 

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

Description : 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

Last Answer :  difference in layers of atoms

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.

Why is graphite softer than diamond?

Description : Why is graphite softer than diamond?

Last Answer : The crystalline structure of graphite and diamond are very different.

Why is graphite softer than diamond?

Description : Why is graphite softer than diamond?

Last Answer : The crystalline structure of graphite and diamond are very different.

Diamond and graphite are

Description : Diamond and graphite are

Last Answer : allotropes of carbon

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

Last Answer : (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

Which one of the following is a good electrical conductor? (1) Graphite (2) Diamond (3) Peat (4) Charcoal

Description : Which one of the following is a good electrical conductor? (1) Graphite (2) Diamond (3) Peat (4) Charcoal

Last Answer : (1) Graphite Explanation: Graphite is a good conductor of electricity because its electrons are delocalized or free to move around. Each carbon atom in graphite is directly linked to only three carbon atoms ... and the fourth is relatively free and can move from one car-bon atom to the other.

The substance which conducts current in the solid state is – (1) diamond (2) graphite (3) iodine (4) sodium chloride

Description : The substance which conducts current in the solid state is – (1) diamond (2) graphite (3) iodine (4) sodium chloride

Last Answer : (2) graphite Explanation: The structure of graphite is unlike most other network substances. It is formed in 'sheets' of carbon atoms, each of which is bonded to only three others. The ... electric charges. Unlike diamond (another carbon allotrope), graphite is an electrical conductor, a. semimetal.

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

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

Last Answer : (A) Diamond

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

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

Last Answer : (A) Diamond

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.

Which one of the following is a good electrical conductor? (1) Graphite (2) Diamond (3) Peat (4) Charcoal

Description : Which one of the following is a good electrical conductor? (1) Graphite (2) Diamond (3) Peat (4) Charcoal 

Last Answer : Graphite

The substance which conducts current in the solid state is (1) diamond (2) graphite (3) iodine (4) sodium chloride

Description : The substance which conducts current in the solid state is (1) diamond (2) graphite (3) iodine (4) sodium chloride

Last Answer : graphite

Diamond does not conduct electricity, because - (1) It's structure is very compact (2) It is of crystalline nature (3) There are only carbon atoms present in it (4) No free electrons are present in it

Description : Diamond does not conduct electricity, because - (1) It's structure is very compact (2) It is of crystalline nature (3) There are only carbon atoms present in it (4) No free electrons are present in it

Last Answer : (4) No free electrons are present in it Explanation: Diamond has a giant molecular structure. Each carbon atom is covalently bonded to four other car-bon atoms. There are no ... conduct electricity. Except for most blue diamonds, which are semiconductors, diamonds are good electrical insulators.

Diamond does not conduct electricity, because (1) It’s structure is very compact (2) It is of crystalline nature (3) There are only carbon atoms present in it (4) No free electrons are present in it

Description : Diamond does not conduct electricity, because (1) It’s structure is very compact (2) It is of crystalline nature (3) There are only carbon atoms present in it (4) No free electrons are present in it

Last Answer : No free electrons are present in it

'Black Gold' refers to (a) Coal (b) Petroleum (c) Gold (d) Diamond

Description : 'Black Gold' refers to (a) Coal (b) Petroleum (c) Gold (d) Diamond

Last Answer : Ans: (b)

Which is the purest form of carbon? -General Knowledge

Description : Which is the purest form of carbon? -General Knowledge

Last Answer : answer:

Which of the following statements is not true about diamonds? (a) It is the purest form of carbon (b) It is the hardest naturally occurring substance (c) It is a good conductor of electricity (d) Artificial diamonds can be prepared by subjecting a solution of pure carbon in iron to very high pressures and temperatures

Description : Which of the following statements is not true about diamonds? (a) It is the purest form of carbon (b) It is the hardest naturally occurring substance (c) It is a good conductor of ... diamonds can be prepared by subjecting a solution of pure carbon in iron to very high pressures and temperatures

Last Answer : Ans:(c)

Which of the following is the purest form of iron? (A) Cast iron (B) Wrought iron (C) Mild steel (D) High carbon steel

Description : Which of the following is the purest form of iron? (A) Cast iron (B) Wrought iron (C) Mild steel (D) High carbon steel

Last Answer : Answer: Option B