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प्रश्न
Choose the correct alternative.
A crystalline form of carbon is
विकल्प
lampblack
gas carbon
sugar
fullerene
उत्तर
sugar
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संबंधित प्रश्न
Fill in the blank.
............. is the hardest substance that occurs naturally.
Choose the correct alternative.
Diamond is used for
Write true or false
Coloured diamonds are costlier than colourless and transparent diamonds
Define the Following Term:
Crystal
State the term:
Substances whose atoms or molecules are arranged in a definite pattern.
Fill in the blank:
......... is the most inferior form of coal.
Name the following:
An amorphous form of carbon that contains about 98% carbon.
State the reasons for use of diamond as an item of jewellery.
Name the following:
A crystalline allotrope of carbon built up from a hexagonal unit.
Complete the statement by filling the blank with the correct word from the option.
The crystal of ________ is opaque to light and is a good conductor of heat.
