Question

The process of conversion of sugar into alcohol is called

• A. nitrogen fixation
• B. moulding
• C. fermentation
• D. infection

Answer 1

The correct option is C

fermentation

Explanation for correct option

(C) fermentation

• Fermentation is an irreversible process where milk gets converted to curd with the help of bacteria.
• Alcoholic fermentation transforms carbohydrates like glucose into alcohol, or more particularly ethanol. Anaerobic fermentation involves the following steps:
• ${\text{C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{6}}{\text{→ 2 C}}_{\text{2}}{\text{H}}_{\text{5}}{\text{OH + 2 CO}}_{\text{2}}$

Explanation for incorrect option

(A)

• The process by which nitrogen is removed from the atmosphere's molecular form $\left({\mathrm{N}}_2\right)$and transformed into nitrogen compounds helpful for other biological processes is known as nitrogen-fixing.

(B)

• A moulding is a piece of plaster or wood that has been cut into an attractive form or ornamented with a pattern and placed along the top of a wall or around a door.

(D)

• When a microbe harms a person after entering its body, an infection happens. These pathogenic tiny organisms are contagious and reproduce swiftly.
• Hence, options (A), (B), and (D) are incorrect.

Hence, option (C) is correct. The process of conversion of sugar into alcohol is called fermentation.