If the work done on the system or by the system is zero, which one of the following statements for a gas kept at a certain temperature is correct ?
Change in internal energy of the system is equal to flow of heat in or out of the system.
Change in internal energy of the system is less than heat transferred.
Change in internal energy of the system is more than the heat flow.
Cannot be determined.
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