Question

Hey , i really confused in learning colour of ph paper.
Plzzz help me . So i could get good marks.

Answer 1

less then 7are acidic 7is neutral and more than 7is basic

Answer 2

The first thing that you should know is that there are 14 divisions on your ph paper.

=7 .... Neutral

<7 .... Acidic

>7 ..... Basic

So, number 1 to 7 - Acidic

number 7 - Neutral

number 7 to 14 - Basic

Secondly, the colour goes in the order of VIBGYOR (Violet, Indigo, Blue, Green, Yellow, Orange, Red) from 14 to 1.

I've given board exams last year, so I know that learning all colours isn't important. You should just remember what I've already told you. Imortant to remember is -

Ph of Milk of magnesia (Frequently asked) - it is 10. (Basic)

Ph of Lime - 2.2 (Acidic)

Ph of Pure distilled water - 7 (Neutral)

Learn NCERT by heart.

Best of luck for boards.