Match the points mentioned in column 'A' to the points mentioned in column B with regard to the zones of a flame and its characteristics.
`{:( " A"," B"),("1. Dark inner zone", "a. Hottest part (no Carbon)"),("2. Blue zone", "b. Partial decomposition"),("3. Luminous zone", "c. Unburnt vapours of wax"), ("4. Non-luminous zone", "d. Complete combustion"):}`

Options

A. 1-a, 2-b, 3-c, 4-d
B. 2-a, 3-b, 4-d, 1-c
C. 3-a, 4-b, 2-c, 1-d
D. 4-a, 1-b, 2-c, 3-d

Answer

To solve the matching question regarding the zones of a flame and their characteristics, we will analyze each zone in Column A and find the appropriate match in Column B.

### Step-by-Step Solution:

1. **Identify the Dark Inner Zone**:
- The dark inner zone is characterized by a lack of air supply, which means it does not support burning. In this zone, unburnt vapours of wax are present.
- **Match**: Dark inner zone (1) → Unburnt vapours of wax (C)

2. **Identify the Blue Zone**:
- The blue zone is known as the hottest part of the flame and is a non-luminous zone. In this zone, complete combustion occurs, and there is no carbon present.
- **Match**: Blue zone (2) → Hottest part (no Carbon) (A)

3. **Identify the Luminous Zone**:
- The luminous zone is the middle zone of the flame where the oxygen supply is limited. This leads to partial decomposition, resulting in some carbon particles being left unburnt.
- **Match**: Luminous zone (3) → Partial decomposition (B)

4. **Identify the Non-Luminous Zone**:
- The non-luminous zone is characterized by complete combustion. This zone is where the combustion process is efficient, and all fuel is burned completely.
- **Match**: Non-luminous zone (4) → Complete combustion (D)

### Final Matches:
- 1 → C (Dark inner zone → Unburnt vapours of wax)
- 2 → A (Blue zone → Hottest part (no Carbon))
- 3 → B (Luminous zone → Partial decomposition)
- 4 → D (Non-luminous zone → Complete combustion)

### Correct Option:
The correct option based on the matches is the second option.