Question

Which of the following processes involves the breaking of a triple bond?

• A. Respiration
• B. Photosynthesis
• C. Decomposition
• D. Nitrogen fixation
• E. Fermentation

Answer 1

The correct option is D Nitrogen fixation

Triple bind exists between the two nitrogen atoms in a nitrogen gas molecule. Breaking of this molecule is a step in nitrogen fixation where atmospheric nitrogen is converted into forms usable by the plants. Photosynthesis, respiration, decomposition and fermentation do not involve any breaking of a triple bind as they do not use nitrogen gas.

So, the correct answer is 'Nitrogen fixation'.