30 Questions
What is the formula for work in terms of force and distance?
$Force \times Distance$
Which of the following is an application of Engineering Thermodynamics?
Air conditioning
What is the scope of Thermodynamics limited to?
Macroscopic properties
In Heat Transfer, which medium does the energy flow from?
From higher-temperature medium to lower-temperature medium
What are the three modes of heat transfer?
Conduction, Convection, Radiation
What is the purpose of Heat Exchangers?
To remove heat from food materials
What is the main source of heat generation within food when placed inside a microwave oven?
Friction between molecules
According to the law of conservation of mass, what happens to the total mass when a reaction takes place?
Total mass remains the same
What makes an object reluctant to change its state of motion based on the text?
Mass
Which division of science deals with the conversion of energy from one form to another?
Thermodynamics
What are the main forms of energy of interest in engineering thermodynamics according to the text?
Heat and work
In a microwave oven, what causes the water molecules to pass heat energy along to other food molecules?
Microwave energy
According to the Institute of Food Science and Technology (IFST) report, why are nanoparticles recommended to be treated as new, potentially harmful materials?
Because their safety has not been tested yet.
What is a key factor influencing the acceptance of new technologies like nanotechnologies by consumers?
Consumer perception and reaction to information
What did studies reveal about European consumer awareness of nanotechnology?
They are progressively becoming aware and positive about its opportunities.
What do US studies indicate about consumer awareness of nanotechnology?
Very few consumers have heard about nanotechnology.
Why is it essential to consider the risk of ingestion of particles incorporated into food packaging materials?
Due to the possibility of migration of particles from packaging to food.
What does the FDA state regarding particle size and new materials?
Particle size is irrelevant when testing new materials for safety.
What is the purpose of food processing?
To transform raw agricultural materials for various purposes
Which technique falls under the physical method of food preservation?
UV sterilization
What factors contribute to the perishability of food materials?
Respiration of crops after harvest, activity of microorganisms, and chemical composition of food
What is the principle behind Hurdle Technology in food preservation?
To combine multiple preservation techniques to create hurdles for microbial growth
Which of the following is considered a chemical method of food preservation?
Salting with NaCl
Why does the perishability of foods depend on the handling of food materials?
To ensure appropriate packaging and transportation methods are used
Which operation involves separating materials into dirts and clean materials?
Cleaning and Sanitizing
What is the main purpose of Size Reduction operations?
To increase surface area of solid particles
Which operation involves methods like freezing, cooling, pasteurization, and sterilization?
Heat Exchange Operations
What is the primary purpose of Material Handling in food processing operations?
To organize movement of specific materials at the right time and quantity
Which operation involves operations like grinding, pulverising, crushing, and grating?
Size Reduction
What type of cleaning method uses air blown to separate materials based on density?
Dry cleaning
Test your knowledge on the differing views of FDA and IFST regarding the safety of nanoparticles and the importance of testing new materials. Explore the debate over whether nanoparticles should be treated as potentially harmful until proven safe.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
