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CHEM3120/3920 In Semester Test
Quiz Instructions
For information about this test (also referred to as quiz), please check the recent announcements.
This online quiz covers material presented in Week 1-5, i.e. lectures 1 to 10 inclusive. The quiz
consists of 10 multiple choice questions and 5 short answer questions and is worth 10% of your final
unit grade.
You are allowed 25min for the quiz which can be taken once only any time between 9am
Monday March 28 and 5pm Friday April 1.
The quiz is open book and you can refer to your lecture notes during the quiz. Students are advised,
however, not to rely entirely on being able to search through their notes for every question. The quiz
consists of 15 questions to be answered in 25 mins so time management is important.
This is an individual task. You may not communicate with anyone else during the quiz. You may not
transmit information about the questions to anyone else or seek assistance from anyone else.
1 ptsQuestion 1
32 mls
3.2 mls
320 mls
0.032 mls
0.32 mls
32 pph corresponds to how many mls per L?
1 ptsQuestion 2
3/31/2022 Quiz: CHEM3120/3920 In Semester Test
https://canvas.sydney.edu.au/courses/38944/quizzes/170711/take 2/9
A dose of 5 mg of compound X for each rat will kill half of the sample population.
A dose of 1 mg of compound X for each rat will kill half of the sample population.
A dose of 5 mg of compound X for each rate will kill 50 members of the sample
population.
A dose of 1 mg of compound X for each rate will kill 50 members of the sample
population.
A dose of 5 mg of compound X for each rat will kill 1/20th of the sample population.
A compound X has an LD = 5 mg/kg when tested on a population of rats whose
individual masses where all close to 0.2 kg. Which one of the following statements
is correct?
50
1 ptsQuestion 3
Contribute to the destruction of stratospheric ozone.
Absorb some of the visible radiation emitted by the Earth.
Absorb some of visible radiation from the Sun.
Absorb some of the infrared radiation from the Sun.
Absorb some of the infrared radiation emitted by the Earth.
The most important role of gases like CO and CH in the Greenhouse Effect is to
(select one option that correctly complete this sentence)