Advertisements
Advertisements
प्रश्न
Fill in the blank
_________ is the hardest compound known to us
Advertisements
उत्तर
Silicon carbide is the hardest compound known to us
APPEARS IN
संबंधित प्रश्न
Give two uses of Antimony
Give two uses of Germanium
Write ‘true’ or ‘false’ for the following statement.
Antimony is a metal.
Write ‘true’ or ‘false’ for the following statement.
Sand is an oxide of silicon.
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 _______
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 gold in jewellery
Write down the properties of metalloids.
______ is used as semiconductor.
Give two examples for metalloids.
Write three properties of metalloids.
