NEET 2021 physics paper solution

Pgt physics

An acid turns blue litmus paper or solution ________

Physical adsorption is:

Physical adsorption is :

A coloured solution known to contain two metal ions, was treated with excedss cold sodium hydroxide solution. When filtered a whitish solid, slowly changing to brown, was retained on the filter paper and a colourless solution collected as the filtrate. dropwise addition of hydrochloric acid to the filtrate produced a white ppt. which dissolved in excess acid. treatment of the residue on filter paper with a solution of strong oxidier produced a reddishh-violet solution.. indicate any pairs of ions:

NEET 2013 p block questions

11th class English model paper solution

solution, #Introduction to Physics, chapter 1,objetive 1 ,#H C verma

A solution 'X' give orange colour when a drop of it falls on pH paper, while another solution 'Y' gives bluish colour when a drop of it falls on pH paper. What is the nature of both the solutoins? Determine the pH of solution 'X' and 'Y'?