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प्रश्न
Write ‘true’ or ‘false’ for the following statement.
Sand is an oxide of silicon.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
What are metalloids?
Give two uses of Silicon
Give two uses of Antimony
Give two uses of Tungsten
Fill in the blank
_________ is the hardest compound known to us
A metalloid used to make glass :
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 what are metalloids.
Name the elements recognised as metalloids.
State the uses of three different metalloids.
State a specific reason for using steel in automobiles.
The element which possesses the character of both metals and non metals are called ______.
______ is used as semiconductor.
Give two examples for metalloids.
Metalloids are ______ at room temperature.
