Embibe Experts Solutions for Chapter: Acids, Bases and Salts, Exercise 1: assam board-2019

What is the common name of the compound ${\mathrm{CaOCl}}_2$?

What is the chemical name of baking soda? How is it produced? Give chemical equation. 

Pratyush took sulphur powder on a spatula and heated it. He collected the evolved by inverting a test tube over it. What will be the action of gas on the following?

Dry litmus paper.

Pratyush took sulphur powder on a spatula and heated it. He collected the evolved by inverting a test tube over it. What will be the action of gas on the following?

Moist litmus paper.

$10 \mathrm{mL}$ of a solution of $\mathrm{NaOH}$ is found to be completely neutralised by $8 \mathrm{mL}$ of a given solution of $\mathrm{HCl}$. If we take $20 \mathrm{mL}$ of the same solution of $\mathrm{NaOH}$, the amount of $\mathrm{HCl}$ solution (the same solution as before) required to neutralise it will be:

You have two solutions A and B. $\mathrm{p}\mathrm{H}$ of solution A is $6$ and $\mathrm{p}\mathrm{H}$ of solution B is $8.$ Which solution has more hydrogen ion concentration? Which of the above solutions is acidic and which one is basic?

What is brine? What is the product formed when electricity is passed through this brine? Write the balanced chemical equation for the above reaction.
 

You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.