FOOD 2410 Study Guide - Winter 2018, Comprehensive Midterm Notes - Protein, Pasteurization, Orange Juice
12 Oct 2018
School
Department
Course
Professor
FOOD 2410
MIDTERM EXAM
STUDY GUIDE
Fall 2018
Questions
1. The United States is Canada's largest trading partner. Canadian goods
being sold in the United States must meet U.S. standards and comply with
U.S. labelling requirements. Similarly, American goods being sold in
Canada must meet our regulations and follow our labelling requirements.
An importer wants to test market a U.S. cake mix in several restricted
Canadian locations. Arrangements have been made to do so, providing
that the instructions and all measurements are provided in the appropriate
SI (metric) units.
The net contents of the cake mix box weigh 1 pound 2.25 ounces.
1¼ cups of water and one egg need to be added to the mix.
An 8 inch by 8 inch square pan or a 9 inch diameter round pan should be
used.
Once the ingredients are prepared, the cake should be baked at 350°F.
Adjustments are necessary for elevations above 3,500 feet.
Using the information in the course notes and applying dimensional
analysis, answer the following questions. Do not forget a summary
statement for each answer.
a. What is the net weight of the cake mix in the box to the nearest
tenth of a gram?
b. How many millilitres of water should be added (to the nearest mL)?
Note: There are 4 cups in a US quart and 4 quarts in a US gallon
c. What are the dimensions of the square pan to the nearest tenth of a
centimetre?
d. What is the diameter of the round pan to the nearest tenth of a
centimetre?
e. At what Celsius temperature (to the nearest degree) should baking
be done?
f. At what elevation (round off to the nearest ten metres) is it
necessary to make changes to the instructions? (e.g., 293 metres
would be rounded to 290 metres and 276.4 metres would be
rounded to 280 metres).’
2. Convert 10 psig to its corresponding psia value
3. 1,000 kg of chopped onions with an initial moisture content of 89% wet
basis are stored under refrigerated conditions (4°C). How much heat
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would be required to dry this material to a 12% final moisture if the
temperature of the drying air was 65°C?
4. What is the enthalpy of 80% quality steam at 110 °C?
5. A vegetable processor has prepared a 200 kg batch of diced rutabagas
that are to be frozen and then placed in sealed plastic bags before being
sold. The initial temperature of the rutabaga cubes is 20°C and they are to
be chilled to a final temperature of -22°C. How much heat must be
removed from the rutabagas in the chilling process?
6. Calculate the heat released when 50 kg of saturated steam at 270.1 kPa
condenses in a heat exchanger. The condensate leaves the process at
70°C.
7. A typical transport trailer (53 feet in length) can carry 22 tons of cargo
without exceeding weight limits imposed by various states and provinces.
How many "tonnes" of cargo can they carry? Express your answer to one
decimal place.
How many pallets of food products could a trailer carry before being over
their limit if each pallet-load weighed 650 kg? Think carefully about your
final answer this question. You can assume that the trailer can hold this
number of pallets.
Watch the spelling of these words. A "tonne" is not the same as a "ton".
There are 1,000 kg in a tonne, and there are 2,000 pounds in a ton. You
may encounter both of these units in food processing applications. (4
marks total)
8.
a. I have a book sitting on my desk that is seven-eighths of an inch
thick (i.e., ⅞ inch). According to the publisher there have been
125,000 copies of this book sold. If all of these books were stacked
in a pile, how tall would this pile be (assuming it didn't fall over)?
Express your answer in kilometres to two decimal places. (3 marks)
b. Many of Canada's international contracts for commercial goods
such as food products and natural resources are signed on the
basis of US dollars or other international currency. A low Canadian
dollar relative to the US dollar encourages exports, even though it
is more costly for us in Canada to buy stuff in the United States.
Consider the following scenario:
A Canadian company buys a piece of processing equipment from a
German-based company for 13,250.50 Euros. How much does this
cost in Canadian dollars (express your answer to the nearest cent)?
On the day the equipment was purchased, $1.00 Canadian was
worth 0.66063 Euros. (3 marks)
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Document Summary
Questions: the united states is canada"s largest trading partner. Canadian goods being sold in the united states must meet u. s. standards and comply with. Canada must meet our regulations and follow our labelling requirements. An importer wants to test market a u. s. cake mix in several restricted. Arrangements have been made to do so, providing that the instructions and all measurements are provided in the appropriate. The net contents of the cake mix box weigh 1 pound 2. 25 ounces. 1 cups of water and one egg need to be added to the mix. An 8 inch by 8 inch square pan or a 9 inch diameter round pan should be used. Once the ingredients are prepared, the cake should be baked at 350 f. Adjustments are necessary for elevations above 3,500 feet. Using the information in the course notes and applying dimensional analysis, answer the following questions.
