Advertisements
Advertisements
Question
It has been found that rubbing vinegar on the stung area of the skin of a person gives him relief. The person has been stung by:
(a) wasp
(b) ant
(c) honey bee
(d) nettle leaf hair
Solution
wasp
When a wasp stings a person, it injects an alkaline solution into the person's skin. This causes high irritation and pain. Applying a weak acid, such as vinegar, to the wound neutralises the alkaline solution and soothes the pain.
APPEARS IN
RELATED QUESTIONS
Name an indicator which is pink in alkaline solution but turns colourless in acidic solution.
Name one natural source of the following acids:
Oxalic acid
Name one natural source of the following acids:
(d) Tartaric acid
What is meant by strong acids and weak acids? Classify the following into strong acids and weak acids:
HCI, CH3 COOH, H2 SO 4, HNO3, H2 CO3 , H2 SO3
What happens during a wasp sting? What is its remedy?
Name the acid present in vinegar.
In acidic solutions blue litmus changes into ______ colour.
Citric acid is present in ______.
Bring the soil sample of your area, find out if it is acidic, basic or neutral. Discuss with farmers if they treat the soil in any manner.
Name the acid present in grapes.