Graphite is a much better conductor of heat and electricity than diamond. This is due to the fact that each carbon atom in graphite:
undergoes sp² hybridization and forms three sigma bonds with three neighbouring carbon atoms
undergoes sp³ hybridization
is tetrahedrally bonded
is free from van der Waals force
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
Miscellaneous · Easy
Which among the following events happened earliest ?
Miscellaneous · Easy
An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
Miscellaneous · Easy