Aspergillus niger is used to prepare vit ___

Options

A. D
B. B2
C. B12
D. C

Answer

To solve the question "Aspergillus niger is used to prepare vit ___", we can follow these steps:

### Step 1: Identify the Organism
Aspergillus niger is a type of fungus that is widely used in various industrial applications.

**Hint:** Remember that Aspergillus niger is a filamentous fungus commonly used in biotechnology.

### Step 2: Understand the Uses of Aspergillus niger
This fungus is known for its ability to produce various substances, including organic acids, enzymes, and vitamins.

**Hint:** Think about the industrial applications of fungi, particularly in fermentation processes.

### Step 3: Focus on Vitamin Production
Among the vitamins mentioned (D, B2, B12, and C), we need to identify which one is specifically produced using Aspergillus niger.

**Hint:** Recall that certain fungi are known for their role in the production of specific vitamins.

### Step 4: Identify the Correct Vitamin
Aspergillus niger is primarily known for its role in the production of Vitamin C (ascorbic acid). It is also used in the production of citric acid and other enzymes.

**Hint:** Vitamin C is commonly associated with citrus fruits, but it can also be produced through microbial fermentation.

### Step 5: Conclude the Answer
Therefore, the correct answer to the question is that Aspergillus niger is used to prepare Vitamin C.

**Final Answer:** Aspergillus niger is used to prepare vitamin C.

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