Question

Match column I with column II and select the correct option.

Column I	Column II
1. Acetobacter aceti	a. Butyric acid
2. Lactobacillus	b. Citric acid
3. Aspergillus niger	c. Acetic acid
4. Clostridium butylicum	d. Lactic acid

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

Answer 1

The correct option is B 1 - c, 2 - d, 3 - b, 4 - a

Certain microbes are used for the production of beneficial products like organic acids.

Some of them include:

• Aspergillus niger: it is a fungus and is used in the production of citric acid.
• Acetobacter aceti: it is a bacterium and is used in the production of acetic acid
• Clostridium butylicum: it is a bacterium and is used in the production of butyric acid
• Lactobacillus: it is a bacterium which is used to prepare curd from milk. These bacteria ferment the milk sugar lactose to produce lactic acid.

Hence, option b is the correct answer.