Which one of the following statements about a compound is NOT correct?
A compound is a substance composed of two or more elements, chemically combined in a fixed proportion
Properties of a compound are different from its constituent elements
A compound is an impure substance
The constituents of a compound can be separated only by chemical or electrochemical reactions
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