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प्रश्न
Fill in the blank
...............is used in making black shoe polish.
उत्तर
lampblack is used in making black shoe polish.
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संबंधित प्रश्न
Which of the following molecule is called buckministerfullerene?
C90 C60 C70 C120
Give reason for the following:
Soda acid and foam types of fire extinguisher are not used for extinguishing electrical fires.
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
FILL IN THE BLANK
Carbon atom has ................... electrons in its valence shell.
State how carbon occurs in the free state and in the combined state.
Name the following:
The gaseous product obtained when carbon monoxide is passed over heated iron [III] oxide.
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]
Coke to water gas.
There is more abundance of carbon on the earth.
Give the structure of alcohol with 4 carbon atoms.
