86. Typically, the rate of oxidation can be slowed by:
Answer: C
The rate of oxidation can typically be slowed by refrigeration.
Refrigeration is an effective method to slow down the rate of oxidation in substances. By lowering the temperature, the kinetic energy of molecules decreases, which in turn reduces the speed of chemical reactions, including oxidation.
A) alligation
Alligation is a mathematical method used to calculate the mixture of different concentrations, not a technique related to oxidation. Therefore, it does not have any relevance to slowing down oxidation rates.
B) distillation.
Distillation is a separation technique that involves boiling and condensing liquids. While it can purify substances, it does not inherently slow down oxidation processes. Thus, this option is incorrect in the context of preventing oxidation.
C) refrigeration.
Refrigeration effectively slows down oxidation by lowering the temperature of the environment where the substances are stored. This reduction in temperature decreases molecular activity, leading to a slower rate of oxidation and preserving the quality of food and other materials.
D) expiration.
Expiration refers to the end of the shelf life of a product, after which it is no longer safe or effective to use. This option does not relate to slowing oxidation; rather, it indicates a point where oxidation has likely occurred, making it incorrect.
Conclusion
Refrigeration is the only method among the options provided that actively slows down the rate of oxidation by reducing temperature and molecular activity. All other options fail to directly impact oxidation rates, making refrigeration the most suitable choice for this purpose.