The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason?
Ice is a bad conductor of heat
Since the surface of the lake is at the same temperature as the air, no heat is lost
The density of water is maximum at 4°C
None of the statements (a), (b) and (c) given above is correct
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