Question

Which of the following acids is commonly used in batteries for cars?

• A. Sulphuric acid
• B. Nitric acid
• C. Hydrochloric acid
• D. Acetic acid

Answer 1

Answer: (A)

Sulphuric acid

The answer is Sulphuric acid.

Being strong acid it completely dissociates in water to produce a high concentration of $H^{+}$ ions. This complete dissociation allows more hydrogen ions to act as mobile charge carriers, to move towards the positive plate/terminal, to close the circuit and enable electric flow; thereby producing strong electrical conductivity.