In case of an ant bite, the effect of the acid can be neutralized by rubbing with:
a. Moist baking soda
b. Zinc carbonate
c. Sodium carbonate
d. Copper sulphate
1 a & b
2 b & c
3 c & d
4 d & a

Correct option is A

Correct Answer: (a)
Explanation
An ant bite injects formic (methanoic} acid into the skin, causing pain and irritation.
The acid can be neutralized by applying a mild base.
· Moist baking soda (Sodium bicarbonate, NaHCO₃} is a mild base and is commonly recommended.
· Zinc carbonate (ZnCO₃} is also a basic carbonate that can neutralize acids.
· Sodium carbonate (Na₂CO₃} is a stronger alkali and is generally not recommended for direct application on the skin because it may cause irritation.
· Copper sulphate (CuSO₄} is not a base and is unsuitable.
Therefore, the correct combination is a & b.
Hence, the correct answer is Option (a}
Additional Information
• The acid in an ant sting is formic acid (HCOOH or methanoic acid}.
• Neutralization reaction: Acid + Base → Salt + Water
• Other examples of neutralization:
· Bee sting (acidic}: Baking soda paste may provide relief.
· Wasp sting (alkaline}: A weak acid such as vinegar or lemon juice can help neutralize it.
• Baking soda (NaHCO₃} is a mild base commonly used in first aid due to its gentle action on the skin.