Subject Experts Solutions for Chapter: Acids, Bases and Salts, Exercise 2: PRACTICE QUESTIONS (COMPETITION WING)

Weak acid among the following is: 

A salt 'X' has a positive radical in which the metal has electronic configuration $2, 8, 8, 2$. The negative radical is formed from an acid used in soft drinks. One molecule of the salt 'X' reacts with one molecule of a base. Predict the formula of the salt 'X.' 

Which among the following is true regarding the aqueous solution of sulphur trioxide and sodium oxide? 

Blue-coloured solid anhydrous cobalt chloride is exposed to the atmosphere and forms a pink-coloured solid. From this, we can infer that cobalt chloride is : 

Name and formula of the salt formed by complete neutralisation of aluminium hydroxide with 'ic' acid of sulphur having four oxygen atoms is: 

Generally, pickles are not stored in tin vessels because: 

Pure nitric acid on longstanding turns yellow due to the formation of : 

Identify the acid used in the purification of metals like gold and silver.