Chemically,borax is ...

The area (in sq units) bounded by the curves $y^2=4x$ and $x^2=4y$ is

An ideal gas follows a process $PT = \text{constant}$. The correct graph between pressure $(P)$ and volume $(V)$ is:

Chemical $A$ is used for water softening to remove temporary hardness. $A$ reacts with sodium carbonate to generate caustic soda. When $CO_2$ is bubbled through $A$,it turns cloudy,what is $A$?

How many $g$ of a dibasic acid $(Mol. wt. = 200)$ should be present in $100 \ ml$ of its aqueous solution to give a decinormal strength?

In almost all Indian metropolitan cities like Delhi,the major atmospheric pollutant$(s)$ is/are: