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प्रश्न
Name two crystalline and four amorphous allotropes of carbon.
उत्तर
Allotropes of carbon:
Crystalline :
- diamond
- graphite.
Amorphous :
- coal,
- coke
- lampblack
- wood charcoal.
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संबंधित प्रश्न
______ and ______ are the two major crystalline allotropes of carbon.
Choose the correct alternative.
Diamond is used for
Write true or false
Graphite is the purest form of carbon.
Write true or false
Diamond is insoluble in all solvents.
Answer the following question
What are fullerenes? Name the most common fullerenes.
Name the products formed when:
diamond is burnt in air at 900°C.
Tick the most appropriate answer.
Which of the following is an amorphous form of carbon?
a. graphite
b. fullerenes
b. diamond
d. coal
What is the function of activated charcoal ?
Compare the structure of the crystal of diamond & graphite with special reference to the reason for diamond being the hardest natural substance while graphite one of the softest. Compare the electrical & thermal conductivity of the two crystalline allotropes of carbon.
About 18% of the weight of the human body is carbonaAll the allotropic forms of carbon are solids.
