Identify the correct statements:

Options

A. iron belongs to first transition series of the periodic table
B. The purest form of commerical iron is wrought iron
C. Anhydrous ferrous sulphate is called as yellow vitriol
D. Iron is the most aboundant transition metal

Answer

### Step-by-Step Solution:

1. **Identify the first statement**: The first statement claims that "iron belongs to the first transition series of the periodic table."
- **Verification**: Iron (Fe) is indeed located in the d-block of the periodic table and is part of the first transition series, which includes elements from Scandium (Sc) to Zinc (Zn).
- **Conclusion**: This statement is **correct**.

2. **Evaluate the second statement**: The second statement asserts that "the purest form of commercial iron is wrought iron."
- **Verification**: The process of obtaining iron involves several steps. Initially, iron oxides are reduced in a blast furnace to produce pig iron, which is impure. Pig iron is then converted to cast iron by adding coke, which has a lower carbon content than pig iron. Finally, cast iron can be oxidized to produce wrought iron, which is indeed the purest form of iron used commercially.
- **Conclusion**: This statement is **correct**.

3. **Analyze the third statement**: The third statement claims that "anhydrous ferrous sulfate is called yellow withdrawal."
- **Verification**: Anhydrous ferrous sulfate is actually known as "green vitriol" due to its green color. The term "yellow withdrawal" is incorrect in this context.
- **Conclusion**: This statement is **incorrect**.

4. **Assess the fourth statement**: The fourth statement states that "iron is the most abundant transition metal."
- **Verification**: Iron is indeed the most abundant transition metal found in the Earth's crust and is widely used in various applications.
- **Conclusion**: This statement is **correct**.

### Summary of Correct Statements:
- Statement 1: Correct
- Statement 2: Correct
- Statement 3: Incorrect
- Statement 4: Correct

Thus, the correct statements are **1, 2, and 4**.

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