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प्रश्न
Fill in the blank
_________ is the hardest compound known to us
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उत्तर
Silicon carbide is the hardest compound known to us
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संबंधित प्रश्न
Give two uses of Silicon
Give two uses of Antimony
Write ‘true’ or ‘false’ for the following statement.
Sand is an oxide of silicon.
A metalloid used to make glass :
A metalloid used in the manufacture of microchips used in computer is :
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
Saline glucose is a solution of glucose and _______
The most ductile metal is _______.
Give the basic demarkation of the Modern Periodic Table into metals, metalloids and non-metals with special reference to halogens and noble gases.
Give a reason why the non-metals – halogens and noble gases are placed in separate groups of the periodic table with special reference to their difference in properties.
State a specific reason for using steel in automobiles.
State a specific reason for using gold in jewellery
Give two examples for metalloids.
Metalloids are ______ at room temperature.
