Q1.If you are given only red litmus paper to identify distilled water, an acidic solution, and a basic solution, which solution would cause the red litmus paper to change colour?

Q2.Which of the following substances are explicitly mentioned as potential olfactory indicators in the provided text?

Q3.According to the provided text, which two substances are specifically tested for changes in odour when mixed with dilute HCl and dilute NaOH solutions?

Q4.In Activity 2.3, what are the initial reactants mentioned for the experiment involving gas evolution?

Q5.In Activity 2.3, after the reaction of zinc granules with dilute sulphuric acid, the evolved gas is passed through a soap solution. What is the primary purpose of this step?

Q6.How is the gas evolved from the reaction of zinc granules with dilute sulphuric acid tested according to the provided text and figure description?

Q7.Besides dilute sulphuric acid, which other acids are suggested for repeating Activity 2.3?

Q8.According to the provided text, what are the products formed when a metal reacts with an acid?

Q9.Which gas is displaced by a metal from acids during a chemical reaction?

Q10.When granulated zinc metal reacts with sodium hydroxide solution, what is the name of the solid compound formed?