Science Paper solution

Probability | JEE Mains 2018 Online Paper Solution | All Shift

When the strip of pH paper was put in a given solution the pH paper changes to orange red. The given solution is most likely to be of:

Which type of solutions is not filtrable through filter paper and parchment membrane both ?

A blue litmus paper was first dipped in dil. HCl and then in dil. NaOH solution. It was observed that the color of litmus paper

A blue litmus paper was first dipped in dil .HCl and then in dil .NaOH solution .It was observed that the colour of the litmus paper