When the stopper of a bottle containing a colourless liquid was removed, it gave out smell like that of venegar. The liquid in the bottle could be

Options

A. hydrochloric acid
B. sodium hydroxide solution
C. acetic acid solution
D. sodium carbonate solution

Explanation

To solve the question regarding the colorless liquid that smells like vinegar, we can follow these steps:

### Step 1: Identify the smell
The question states that the liquid has a smell similar to vinegar. This is a key clue since vinegar is known for its distinct odor.

**Hint:** Think about common substances that have a vinegar-like smell.

### Step 2: Recall the composition of vinegar
Vinegar is primarily composed of acetic acid (CH₃COOH) diluted in water. It typically contains about 4% acetic acid by volume.

**Hint:** Consider what organic compounds are commonly associated with vinegar.

### Step 3: Determine the likely identity of the liquid
Since the liquid in the bottle smells like vinegar, it is reasonable to conclude that it is a dilute solution of acetic acid. This aligns with the characteristics of vinegar.

**Hint:** Reflect on the properties of acetic acid and its uses in food preparation.

### Step 4: Conclude the answer
Based on the information gathered, the liquid in the bottle is likely a solution of acetic acid.

**Final Answer:** The liquid in the bottle could be an acetic acid solution.