What is the number of water of crystallisation molecules present in Plaster of Paris?

Methyl orange shows a ................... color in acidic solutions and a ................... color in basic solutions.

What is the primary acid component of vinegar?

Which natural substance is used to produce litmus dye?

Match List-I with List-II and select the correct answer using the codes given below: List - I A. Acetic Acid B. Citric Acid C. Lactic Acid D. Formic Acid List - II1. Ant sting2. Sour milk3. Vinegar4. Orange

Aqua regia is a freshly prepared mixture of concentrated hydrochloric acid (HCl) and concentrated nitric acid (HNO3) in what volume ratio?

Which of the following statements relating to the pH scale are correct? (J) pH = 7 is neutral. (K) pH 7 is alkaline. (M) The pH scale ranges from 1 to 7. Choose the correct option:

Given below are two statements: Statement I: All metals evolve hydrogen gas upon reaction with hydrochloric acid. Statement II: Hydrogen carbonates of all metals except sodium, react with acids to give a corresponding salt, carbon dioxide and water. In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements: Statement I: For mixing concentrated nitric acid and water, water must always be added slowly to the concentrated acid. Statement II: For diluting an acid, acid should always be added slowly to water with constant stirring. In the light of the above statements, choose the correct answer: