Q1.What type of process occurs when concentrated acids or bases are mixed with water?

Q2.When acids and bases neutralize each other, what are the resulting products?

Q3.What is the definition of 'water of crystallisation'?

Q4.A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. Which of the following solutions is most likely to cause this reaction?

Q5.If 10 mL of a NaOH solution is completely neutralized by 8 mL of a given HCl solution, how much of the same HCl solution would be required to neutralize 20 mL of the same NaOH solution?

Q6.Which type of medicine is commonly used for treating indigestion?

Q7.Why does dry HCl gas not exhibit acidic properties?

Q8.Which gas is produced when acids react with metal hydrogencarbonates, a reaction utilized in fire extinguishers?

Q9.According to the provided text, which two chemicals are mixed to prepare a soda-acid fire extinguisher in the described experiment?

Q10.In the preparation of a soda-acid fire extinguisher as described in the text, where is the dilute sulphuric acid initially placed before it mixes with the sodium hydrogencarbonate solution?