Correct Answer - Option 4 : Methanoic acid
The correct answer is Methanoic Acid.
Explanation:
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Nettle sting and bee-sting have methanoic acid commonly called formic acid (HCOOH).
- The leaves and young stems of this herbaceous plant are fitted with stinging hairs tipped with formic acid and other irritants.
- If touched, these needle-like hairs inject the stinging acid into the skin, triggering a burning, tingling sensation and an itchy rash.
So, the bee sting contains methanoic acid that causes pain and irritation.
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Acetic Acid:-
- Chemical formula:- CH3COOH.
- IUPAC name:- Ethanoic acid
- Anhydrous Acetic acid is called Glacial Acetic acid.
- Its crystals are obtained at a temperature slightly lower than 16.7°C.
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Sulphuric Acid:-
- It is commonly known as King of Chemicals.
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it is used in the preparation of a very large number of other useful chemicals such as hydrochloric acid, nitric acid, dyes, drugs
- Sulfuric acid is used in the production of fertilizers, e.g., superphosphate of lime and ammonium sulfate.
- It is also used as an electrolyte in lead-acid batteries.
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Citric acid:-
- The fruits containing citric acid are termed citrus fruits. eg: lemon, orange, grapefruit, etc.
- These are sour in taste and are a good source of Vitamin C, thus help in preventing the disease caused by the deficiency of Vitamin C, i.e., Scurvy.
