LS test

LS test

University

20 Qs

quiz-placeholder

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LS test

LS test

Assessment

Quiz

Chemistry

University

Hard

Created by

Johan Liberty

Used 11+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

1. Water (H2O) is:
A homogeneous mixture of H2 and O2
A heterogeneous mixture of H2 and O2
A pure substance
An element

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

2. Air in Paris is:
A homogeneous mixture
A heterogeneous mixture
A pure substance
An element

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

3. Crude oil is predominantly a mixture of straight and branched chain aliphatic hydrocarbons, ranging from gaseous methance to viscous tar-like compounds with up to 80 carbons. Thus, crude oil is
A homogeneous mixture
A heterogeneous mixture
A pure substance
An element

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

4. Which of following statements is/are not correct?

Solid always has a fixed volume

Liquid has a fixed volume

Liquid takes the volume of its container

Gas can be compressed to a smaller volume or expanded to a larger volume.

5.

MULTIPLE SELECT QUESTION

20 sec • 1 pt

5. Hydrogen is considered to be a promissing energy carier (a clean fuel). It is in the gas phase at the ambient conditions (room temperature and atmospheric pressure). To liquidify H2 (transform it into liquid), one can:
Reduce pressure
Increase pressure
Reduce temperature
Reduce pressure and reduce temperature

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

6. Currently, the global energy consumption keeps increased. To deal with this problem, one could propose:
Invent a new source of energy
Harvest the energy(ies) which is(are) already available to the human being
Do nothing simply because we can not do anything. Consumption of energy is natural
Let’s go back to before the industrial revolution, namely do not use any machine

7.

MULTIPLE SELECT QUESTION

20 sec • 1 pt

7. Burning gasoline to power a car is a:

Chemical – to – motion energy conversion process

Efficient energy conversion with conversion yeild of 100%

Endothermic process

Exothermic process

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