Preview

Extraction of Caffeine from Tea Leaves

Satisfactory Essays
Open Document
Open Document
854 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Extraction of Caffeine from Tea Leaves
QUIZ 02

ECO402
Quiz # 2
ECO402 (Microeconomics)
Semester Spring 2008
Total Marks 15

Instructions:
1.
2.
3.
4.
5.

This quiz covers Lesson 14-17.
Last date for submission of quiz is 12/05/08.
Upload your quiz with in due date and time.
No quiz will be accepted after due date and time.
In MCQs, write only one option in the answer sheet which you think is correct. More than one answer will be marked zero.
6. No quiz will be accepted through e-mail.
7. Please submit your solution files (a word document) as illustrated on the next page.
8. Ensure that your solution file has “doc” extension and not “docx” extension; otherwise it would not be acceptable.

Virtual University of Pakistan

QUIZ 02

ECO402
Answer Sheet

Copy this table in a word document and solve your quiz by providing answers in the given column.
In the “selected option” column, write the option number (A, B,
C, D) which you think is the correct option for MCQs.
Upload only the answer sheet on LMS. Don’t upload the whole quiz. Q no.

Selected option

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Virtual University of Pakistan

QUIZ 02

ECO402

Quiz
1) The weighted average of all possible outcomes of a project, with the probabilities of the outcomes used as weights, is known as the:
A.
B.
C.
D.

Variance.
Standard deviation.
Expected value
Coefficient of variation.

2) Assume that two investment opportunities have identical expected values of $100,000. Investment A has a variance of 25,000, while investment B's variance is 10,000. We would expect most investors (who dislike risk) to prefer investment opportunity:
A.
B.
C.
D.

A because it has less risk.
A because it provides higher potential earnings.
B because it has less risk.
B because of its higher potential earnings.

3) Assume that one of two possible outcomes will follow a decision. One outcome yields a $75 payoff and has a probability of 0.3; the other outcome

You May Also Find These Documents Helpful

  • Good Essays

    The experiment did not contain any form of reaction mechanism since no chemical identity had been changed. The lab demonstrates the use of chemical molecular behavior to isolate a particular set of molecules. Caffeine had already existed in the leaf itself but needed to be separated from the other chemicals. Caffeine’s chemical structure is relatively similar to the nucleic acid purine in that they use nitrogen and is bicyclic but lacks an alkene, amine and an amide. Caffeine has a solubility of 67.0 g/100 mL in boiling water but tannins also boil in hot water to form catechin. Catechin cannot react with water but it can with calcium carbonate. The calcium carbonate was added into the reflux beforehand so the catechins can quickly change to form glucose and salts of gallic…

    • 349 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Colander, D. C. (2013). Microeconomics (9th ed.). Retrieved from The University of Phoenix eBook Collection database.…

    • 203 Words
    • 2 Pages
    Satisfactory Essays
  • Better Essays

    ECO 365 WK 2

    • 874 Words
    • 3 Pages

    References: Colander, D. (2013). Microeconomics (9th ed.). Retrieved from The University of Phoenix eBook Collection.…

    • 874 Words
    • 3 Pages
    Better Essays
  • Satisfactory Essays

    bus 115 final studyguide

    • 1515 Words
    • 7 Pages

    The multiple answer questions have answer choices a, b, c, d, and e as multiple options. Read and study the course materials before you attempt this exam. Then access the exam and read the scenario, question, or statement. Then, choose the correct answer or answers. With multiple answer questions, one answer may be correct, all answers may be correct, or some combination of the a–e answer options may be correct. Partial credit is not allowed.…

    • 1515 Words
    • 7 Pages
    Satisfactory Essays
  • Good Essays

    Use a highlighter tool to indicate the multiple-choice responses. Save your work, then submit as an attachment to the appropriate folder within the Assignment Forum by Wednesday of Module 3.…

    • 429 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Caffeine Isoltioan Lab

    • 532 Words
    • 3 Pages

    After the final sublimation, the total mass of extracted caffeine was 11.7mg. The other 43.3mg the manufacturers’ claim to be in a cup of tea were most likely lost throughout the experiment, either through transferring between containers, leaving some caffeine behind in the tea leaves, or not pipetting out all of the organic matter after the tubes were centrifuged. The melting range for the crude caffeine was 215.9-218.7oC. Although this melting range is lower than the MSDS value, this was expected and stated in the lab manual.…

    • 532 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Caffeine as a Teratogen

    • 964 Words
    • 4 Pages

    The purpose of this paper is to identify the teratogenetic affects of caffeine in unborn children and breast feeding children. The following topics will be discussed: Risk of congenital anomalies, risk of spontaneous abortion, risk of low birth weight and preterm labor as well as, the critical period of the teratogen, short term and long term affects, and the changing danger of the teratogen relating to technological advances. The necessary dosage for teratogenetic impediment of the healthy development of unborn children, as well as the steps that can be taken to prevent this will also be included. Furthermore, and quite possibly most relevant to the topic of the teratogenetic effect of caffeine, is its ability to potentiate the teratogenetic effects of other substances.…

    • 964 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Portfolio Managementi

    • 1372 Words
    • 6 Pages

    3. As the correlation coefficient between two assets decreases, the shape of the efficient frontier…

    • 1372 Words
    • 6 Pages
    Powerful Essays
  • Powerful Essays

    CLAW5001

    • 1365 Words
    • 6 Pages

    The exam is an open book exam so you may take any written or printed…

    • 1365 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    Haha

    • 723 Words
    • 3 Pages

    Feedback: Remanufacturing implies refurbishing and reselling a product; recycling implies reclaiming products for a different use (e.g., using paper to make cardboard).…

    • 723 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Caffeine has been identified as a possible ergogenic aid for athletic performance. Caffeine supplementation was found to significantly improve time trials of an Olympic swimmer; the drug provides a boost for athletes which allows you to have constant release of energy which helps delays the onset of fatigue — delaying feelings of fatigue is done by blocking receptors which make you feel like sleep is needed, the neurotransmitter is called adenosine.…

    • 71 Words
    • 1 Page
    Satisfactory Essays
  • Good Essays

    Test 3

    • 765 Words
    • 4 Pages

    The test will be posted in the Announcement page, at the Assignment page and sent to each student via email by Sunday, October 26,5pm.…

    • 765 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Caffeine is one of the most consumed psychoactive drugs and it i/s found in a large amount of products. People are aware of the positive effects of caffeine such as the increase of concentration and enhancement of performance and mood. But many aren't aware of the negatives. By looking through the scientific lense this paper will focus on the positive and negative effects of caffeine on the body in order to answer my groups overall question, “Should people cut back on the consumption of products containing caffeine?”…

    • 1106 Words
    • 5 Pages
    Good Essays
  • Better Essays

    Pekala, Nancy ( 2009, November 11). Why Oh Why Women Y? Marketing to a Connected Generation.…

    • 1467 Words
    • 6 Pages
    Better Essays
  • Satisfactory Essays

    2. 20 ml of boiling water was added to each of the beaker and allowed to stand for 5 minutes.…

    • 345 Words
    • 2 Pages
    Satisfactory Essays

Related Topics