Rajesh Singh, Indu Gupta and, Sikha Sharma Solutions for Chapter: Acids, Bases and Salts, Exercise 2: Short Answer Type Questions

What happens when nitric acid is added to egg shell?

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

How would you distinguish between baking powder and washing soda by heating?

Salt $\mathrm{A}$ Commonly used in bakery products on heating gets converted into another salt $\mathrm{B}$ which itself is used for removal of hardness of water and a gas $\mathrm{C}$ is evolved. The gas $\mathrm{C}$ when passed through lime water, turns it milky. Identify $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$.

In one of the industrial processes for manufacture of sodium hydroxide a gas $\mathrm{X}$ is formed as by-product. The gas $\mathrm{X}$ reacts with lime water to give a compound $\mathrm{Y}$ which is as a bleaching agent in chemical industry. Identify $\mathrm{X}$ and $\mathrm{Y}$ giving the chemical equation of the reaction involved.

Fill in the missing data in the given table.

What are strong and weak acids? In the following list of acids, separate strong acids from weak acids. Hydrochloric acid, citric acid, acetic acid, nitric acid, formic acid, sulphuric acid.

When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved, which is utilised in the hydrogenation of oil. Name the gas evolved. Write the chemical equation of the reaction involved and also write a test to detect the gas formed.