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Week 3 Topic 1.4

Authored by Sally Nadebaum

Chemistry

12th Grade

Used 7+ times

Week 3 Topic 1.4
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24 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The physical separation of mixtures into individual components is..

chromatography
opacity 
latent
trace evidence 

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

The diagram below shows a chromatogram obtained when a sample X was analysed together with four other known dyes P, Q, R and S. Dye Q was known to cause cancer. Which of the following dye(s) is/are safe for use?

P only
S only
P and S
P and X

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The Rvalue  for the blue component is 

0.3
0.7
10
3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The Rvalue  for the red component is 

0.3
0.7
10
7

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The substance in the mixture that has the greatest affinity for the stationary phase will travel

fastest
slowest

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The mobile phase in TLC is typically a

plasma
solid
gas
liquid

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The substance in the mixture that has the greatest affinity for the mobile phase will travel

fastest
slowest

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