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प्रश्न
Write true or false
Coloured diamonds are costlier than colourless and transparent diamonds
विकल्प
True
False
उत्तर
False
Coloured diamonds are cheaper than colourless and transparent diamonds
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संबंधित प्रश्न
State the term:
Substances whose atoms or molecules are arranged in a definite pattern.
Name the following:
The third crystalline form of carbon.
Fill in the blank:
......... is the most inferior form of coal.
Choose the correct alternative
Destructive distillation of coal yields
Write ‘True’ Or ‘False’ Against the Following Statement:
Charcoal is a good adsorbent.
How is wood charcoal made locally? What other substances are formed in the process.
Descirbe the formation of coal
Tick the most appropriate answer.
Diamond and graphite are
a. metals.
b. organic compounds,
c. alkenes.
d. allotropes.
What is water gas used for ?
Explain the following.
Uses of various allotropes of carbon.
