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प्रश्न
What happens when a soda water bottle is opened ?
उत्तर
When the pressure is released the bottled gas escapes with a bristling effervescence that ads fizz to the drink.
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संबंधित प्रश्न
Write ‘true’ or ‘false’ against the following statement:
Wood charcoal is an important constituent of gun powder.
Name the following:
The purest form of amorphous carbon.
How is wood charcoal made locally? What other substances are formed in the process.
Name the products formed when:
graphite is subjected to high pressure and 3000°C temperature.
Tick the most appropriate answer.
Which of the following is an amorphous form of carbon?
a. graphite
b. fullerenes
b. diamond
d. coal
TRUE \ FALSE
Buckyball is a yellow amorphous solid.
Explain the following.
Uses of various allotropes of carbon.
State the reasons for use of graphite
(i) as a lubricant for heated machine parts,
(ii) as a lining for crucibles used in manufacture of high grade steel,
(iii) as an electrode in electroplating.
Name the following:
An amorphous allotrope of carbon which floats on water.
The amorphous allotropic carbon is used for making electrodes in dry cell ______.
