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प्रश्न
Name the element whose allotropic form is graphite.
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उत्तर
Carbon is the element whose allotropic form is graphite.
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संबंधित प्रश्न
Name the scientist who disproved the 'vital force theory' for the formation of organic compounds.
Which of the following molecule is called buckministerfullerene?
C90 C60 C70 C120
Name the following:
Substances whose atoms or molecules are not arranged in a geometrical pattern.
Name the products formed when:
bone is heated in the absence of air.
How will you collect the gas ?
Match the colunm
| column A | column B |
| 1. A product of incomplete burning | a. Hopcolite |
| 2. Nature of carben monoxide | b. Combustible gas |
| 3. A compound formed by the combination of haemoglobin and carbon monoxide | c. carboxy-haemoglobin |
| 4. A mixture of metallic oxides | d. Carbon monoxide |
| 5. Carbon monoxide | e. Highly poisonous |
Tick the most appropriate answer.
Each molecule of Buckminster fulierene contains 60 atoms of carbon arranged as balls consisting of 12 pentagons and
a. 20 hexagons
b. 30 hexagons
c. 40 hexagons
d. 50 hexagons
State two characteristic features of carbon which when put together give rise to a large number of carbon compounds.
Name of the following compounds :
______ is the essential element in all the organic compounds.
State how carbon occurs in the free state and in the combined state.
Select the appropeiate option of the following statement:
The type of coal with the highest carbon conent.
Give a balanced equation for the following conversion: [In one or two steps]
A metallic oxide to calcium carbonate.
Match the following.
| 1. | Alkyne | Bucky Ball |
| 2. | Andre Geim | Oxidation |
| 3. | C60 | Graphene |
| 4. | Thermocol | Triple bond |
| 5. | Combution | Polystyrene |
The property of self-linkage among identical atoms to form long chain compounds is known as ______.
Carbon is one of the most important ______ elements.
Carbon monoxide displaces ______ from hemoglobin.
______ is the main constituent of coal.
Answer the following by rearranging the jumbled letters :
Organic compounds having a double bond between carbon atoms are
knelaes
