experts please mention that from which respective chapters are the following three questions are from

Solution

120. Chapter - Biomolecules 

solution - Reversible inhibitors include competitive inhibitors and noncompetitive inhibitors.Thus option 2 is incorrect and hence the answer.
 
121. Chapter - Transport in plants.

solution - The pressure potential of a flaccid cell is usually zero because the water potential and pressure potential within a flaccid cell is equal. Thus, the pressure potential of a flaccid cell would be zero. (Option d).
 
122. Chapter - Mineral Nutrition 

Solution - Chlorosis is a yellowing of leaf tissue due to a lack of chlorophyll. Due to deficiency of sulphur, plant shows chlorosis (option d).
 

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120.Biomolecules
121.Transport in plants
122.Mineral Nutrition 

hope it helps.
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