Which of the following statements about diamond are correct? 1.It is used as a gem in jewellery because of its ability to reflect light 2.It is a good conductor of electricity 3.It is used for cutting glass, marble stones and other hard materials 4.It is used for drilling of rocks Select the correct answer using the code given below:

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