Arrange the following liquids in increasing order of boiling points.

Options

A. Kerosene ltFuel oil lt Naphtha lt Petrol
B. Fuel oil lt Naphtha lt Petrol lt Kerosene
C. Naphtha lt Petrol lt Kerosene ltFuel oil
D. Petrol lt Naphtha Kerosene ltFuel oil

Explanation

To arrange the given liquids in increasing order of their boiling points, we need to know the boiling points of each liquid. The liquids provided are naphtha, petrol, kerosene, and fuel oil.

### Step-by-Step Solution:

1. **Identify the boiling points of each liquid:**
- **Naphtha:** Boiling point is between 20°C to 180°C.
- **Petrol (Gasoline):** Boiling point is between 20°C to 200°C.
- **Kerosene:** Boiling point is between 180°C to 260°C.
- **Fuel Oil:** Boiling point is between 370°C to 600°C.

2. **Compare the boiling points:**
- The lowest boiling point is for **naphtha** (20°C to 180°C).
- Next is **petrol** (20°C to 200°C), which overlaps with naphtha but has a higher upper limit.
- Then comes **kerosene** (180°C to 260°C), which starts where naphtha ends.
- Finally, **fuel oil** has the highest boiling point (370°C to 600°C).

3. **Arrange in increasing order:**
- Based on the boiling points, the increasing order is:
- Naphtha
- Petrol
- Kerosene
- Fuel Oil

### Final Answer:
The increasing order of boiling points is: **Naphtha < Petrol < Kerosene < Fuel Oil**.