Gujcet 2021 Paper Solution

NEET 2021 physics paper solution

An acid turns blue litmus paper or solution ________

A student prepared solutions of (i) an acid and (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since both the solutions are colourless how will she distinguish between the two ?

11th class English model paper solution

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'?

(a) How is pH paper used to find the pH of a solutions? (b) The pH value of water is 7. What will be the pH value of (i) aqueous solution of sodium hydroxide and (ii) dil HCl.

(a) How is pH paper used to find the pH of a solution? (b) The pH value of water is 7. What will be the pH value of (i) aqueous solution of sodium hydroxide and (ii) dil. HCl.

State your observation for the following cases : Paper soaked in potassium permanganate solution is introduced into a as jar of sulphur dioxide.

State your observation - i] A piece of moist blue litmus paper ii] paper soaked in potassium permanganate solution - is introduced in each case into a jar of sulphur dioxide.

A solution of a sodium salt gives yellow precipitate with both Pb^(2+) and Ag^(+) ions. Moreover, the acidified solution of sodium salt with KNO_(2) liberates a coloured gas which turns starch paper blue. The anion is :