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प्रश्न
Explain the difference.
Crystalline and non-crystalline forms of carbon.
उत्तर
| Crystalline carbon | Non-crystalline carbon |
| A crystalline form has a regular and definite arrangement of atoms. | A Non-crystalline form does not have the regular arrangement of atoms. |
| Their melting point and boiling point are high and specific. | It melts at very high temperatures. |
| Crystalline carbon is a very hard substance. | Non-crystalline carbon is brittle. |
| A crystalline form has a definite geometrical shape, sharp edges and plane surfaces. | They are amorphous, hence, they do not have definite geometrical shape. |
| Diamond, graphite and fullerene are different crystalline forms of carbon. | Coal, charcoal and coke are different non-crystalline/amorphous forms of carbon. |
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संबंधित प्रश्न
Write true or false
Coloured diamonds are costlier than colourless and transparent diamonds
Write true or false
Diamond is insoluble in all solvents.
Name the following:
The third crystalline form of carbon.
Answer the following question
Why is graphite a good conductor of electricity but not diamond?
Answer the following question
Explain the softness of graphite with reference to its structure.
Write ‘true’ or ‘false’ against the following statement:
Activated charcoal is a good conductor of electricity.
Write ‘true’ or ‘false’ against the following statement:
Wood charcoal is an important constituent of gun powder.
Name the products formed when:
graphite is subjected to high pressure and 3000°C temperature.
Give balanced equations for the following chemical reactions:
(a) wood charcoal and cone, nitric acid
(b) coke and steam
(c) wood charcoal and lead monoxide.
What happens when a soda water bottle is opened ?
Tick the most appropriate answer.
Fuel gases like water gas and producer gas are manufactured from
a. bone charcoal
b. wood charcoal
c. coke
d. none of these
TRUE \ FALSE
Graphite is a poor conductor of electricity.
Name the crystalline forms of carbon.
State one use of each of the following:
Diamond, Graphite, Coke, Bone charcoal
Explain the following.
Diamond, graphite and fullerenes are crystalline forms of carbon.
Name the following:
The hardest naturally occurring substance.
Name the following:
An allotrope of carbon used for the manufacture of coke.
Name the following:
An amorphous allotrope of carbon which floats on water.
Complete the statement by filling the blank with the correct word from the option.
A graphite-clay mixture baked at high temperature is used in making ______.
