Which one among the following statements is correct?
Convex mirrors are used by doctors to examine oral cavity
Concave mirrors are used as reflectors
Convex mirrors are used as reflectors
Convex mirrors should be used for shaving
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