Which among the following statements with respect to carbon is/are correct? 1.Carbon forms the basis for all living organisms and many things we use 2.Carbon shows tetra-valency and the property of catenation 3.Carbon forms covalent bonds with itself and other elements 4.Carbon forms compounds containing triple and tetra bonds between carbon atoms 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