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NDA 2026
Exam
NDA
Year
2026
Subject
General Ability
Chapter
General Science

NDA 2026 · General Ability · General Science

Consider the following statement: 'Acids are substances that...

Consider the following statement:
'Acids are substances that dissociate in water to give hydrogen ions H+\text{H}^+ (aq), and bases are substances that produce hydroxyl ions OH−\text{OH}^- (aq).'
The above statement is based on which one of the following concepts?

Options

  1. ABronsted-Lowry concept
  2. BLewis acid-base concept
  3. CArrhenius concept
  4. DConjugate acid-base concept

Correct answer

C. Arrhenius concept

Step-by-step solution

According to the Arrhenius concept, an acid is a substance that dissociates in water to give hydrogen ions H+\text{H}^+ (aq), and a base is a substance that dissociates in water to yield hydroxyl ions OH−\text{OH}^- (aq).

The Bronsted-Lowry concept defines an acid as a proton donor and a base as a proton acceptor.

The Lewis concept defines an acid as an electron pair acceptor and a base as an electron pair donor.

Thus, the given statement is based on the Arrhenius concept.

Answer: Arrhenius concept
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