Match the following column of bacteria and their commercially important products.

Column l

Column ll

A Aspergillus niger 1 Lactic acid
B Acetobacter aceti 2 Butyric acid
C Clostridium butylicum 3 Acetic acid
D Lactobacillus 4 Citric acid


Codes

A B C D
(1)  2   3   4   1 
(2)  2  4  3  1
(3)  4  3  2  1
(4)  4  1  3  2
(c) Following is the list of bacteria and their commercially important products

Column l

(Bacterium)

Column ll

(Product)

A

Aspergillus niger

1

Citric acid

B

Acetobacter aceti

2

Acetic acid

C

Clostridium butylicum

3

Butyric acid

D

Lactobacillus

4

 Lactic acid

Page 183, XII NCERT