Neutralisation reaction is a
A. physical and reversible change.

B. physical change that cannot be reversed.

C. chemical and reversible change.

D. chemical change that cannot be reversed.

Describe the process of neutralization with the help of an example.

While playing in a park, a child was stung by a wasp. Some elders suggested applying paste of baking soda and others lemon juice as remedy. Which remedy do you think is appropriate and why?

Look at the given reaction.

Hydrochloric acid + Sodium hydroxide (base) → Sodium chloride (salt) + Water

Sodium chloride formed in this reaction remains in solution form. Can we get solid sodium chloride from this solution? Suggest a method (if any).

Paheli is suffering from indigestion due to acidity. Is it advisable to give her orange juice in this situation and why?

Neutralisation reaction is a

When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?

Products of a neutralisation reaction are always

A farmer was unhappy because of his low crop yield. He discussed the problem with an agricultural scientist and realised that the soil of his field was either too acidic or too basic. What remedy would you suggest the farmer to neutralise the soil?

Paheli observed that most of the fish in the pond of her village were gradually dying. She also observed that the waste of a factory in their village is flowing into the pond which probably caused the fish to die.

(a) Explain why the fish were dying.

(b) If the factory waste is acidic in nature, how can it be neutralised?

Form a sentence using the following words – baking soda, ant bite, moist, effect, neutralised, rubbing.