What type of substance would help reduce irritation caused by a nettle leaf sting?
Answer and explanation
Correct answer: Mild basic substance
Nettle stings are commonly associated with an acidic irritant. The acid-base principle predicts that a mild base can partially neutralise an acid and reduce its irritating effect. Therefore a mild basic substance is the most suitable answer, making option A correct. A strong acid would add to the acidity, while neutral sugar and dry salt do not provide the required neutralisation reaction. The treatment should still be used safely and appropriately.
Frequently asked questions
What is the correct answer to this question?
Mild basic substance
Why is this the correct answer?
Nettle stings are commonly associated with an acidic irritant. The acid-base principle predicts that a mild base can partially neutralise an acid and reduce its irritating effect. Therefore a mild basic substance is the most suitable answer, making option A correct. A strong acid would add to the acidity, while neutral sugar and dry salt do not provide the required neutralisation reaction. The treatment should still be used safely and appropriately.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
