Which one of the following is the most important factor for the formulation of smog?
Long winter nights
Formation of an 'inversion lid'
Presence of many air pollutant resources
Rapid fall in temperature with increasing height above the sea level
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