Arrange the different type of coal in sequence in the increasing order of the quality coal.
(a) Lignite (b) Peat (c) Anthracite (d) Bituminous

Options

A. acdb
B. dbca
C. badc
D. bcda

Explanation

To arrange the different types of coal in the increasing order of their quality, we need to understand the carbon content in each type of coal. The higher the carbon content, the higher the quality of the coal. Here’s how we can arrange them step by step:

### Step 1: Identify the types of coal and their carbon content
- **Peat**: Less than 60% carbon
- **Lignite**: 65% to 70% carbon
- **Bituminous**: 72% to 86% carbon
- **Anthracite**: 92% to 98% carbon

### Step 2: Arrange the coal types based on their carbon content
1. **Peat** (least carbon content)
2. **Lignite**
3. **Bituminous**
4. **Anthracite** (most carbon content)

### Step 3: Write the final arrangement
The increasing order of the quality of coal is:
1. Peat (b)
2. Lignite (a)
3. Bituminous (d)
4. Anthracite (c)

### Final Answer
The sequence in the increasing order of the quality of coal is: **Peat (b), Lignite (a), Bituminous (d), Anthracite (c)**.

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