Dairy Chemistry- ICAR JRF/SRF 2024

Matching the items of List I with List II for Milk clotting enzymes from different sources – microbial:

The correct combination is Option 2: (A) - (II), (B) - (IV), (C) - (1), (DB) - (Ill).

Correct option: (2) (A) - (II), (B) - (IV), (C) - (1), (DB) - (Ill)

• The Order of Chemical Reactions:
• Kinetic Characteristics:
• The order of a reaction is an experimentally determined exponent in the rate equation:

• Can be zero (independent of reactant concentration), an integer/whole number (1, 2, 3), or fractional (common in complex free-radical mechanisms and enzymatic reactions).
• Conclusion: (A), (B) and (C) (Option 1).

Correct option: (1) (A), (B) and (C).

• Absorbance vs. Percent Transmittance in Spectrophotometry:
• Beer-Lambert Law Linearity:

• Absorbance ($A$) is directly proportional to analyte concentration ($c$), yielding linear calibration curves.
• Percent Transmittance ($\%T = 100 \times 10^{-A}$) exhibits a non-linear exponential decay with concentration, complicating quantitative determinations.
• Conclusion: Because absorbance is proportional to the concentration of the analyte, whereas %T is not (Option 3).

Correct option: (3) Because absorbance is proportional to the concentration of the analyte, whereas %T is not