WorksheetsCAX KS3 chromotography
Total questions: 15
Worksheet time: 12mins
Name
Class
Date
1.
Ink can be separated by a method of -----------------------------------------------
a)
distillation
b)
filtration
c)
chromatography
d)
sedimentation
2.
chromatography separates the mixture of dyes on the basis of their ----------------------------
a)
density
b)
solubility
c)
gravity
d)
boiling point
3.
On the chromatogram given -------------- is mixture.
a)
red
b)
orange
c)
green
d)
black
4.
A pure substance shows ------------------ spot on chromat gram
a)
0
b)
1
c)
2
d)
3
5.
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?
a)
P only
b)
S only
c)
P and S
d)
P and X
6.
The diagram shows the chromatogram for three colouring dyes and that for a brown marker. What dye(s) are contained in the marker's ink?
a)
purple and green
b)
purple and yellow
c)
purple only
d)
green and yellow
7.
Dyes in water soluble markers may be separated by means of..
a)
crystallization
b)
sublimation
c)
chromatography
d)
sedimentation
8.
In chromatography, if a solute does not separate and remains on the start line ....
a)
the solute is insoluble in the solvent
b)
the solute is soluble in the solvent
c)
the solvent is insoluble in the solute
d)
the solvent is soluble in the solute
9.
In paper chromatography, the LEAST soluble solute .......
a)
does not move from the start point
b)
stays closest to the start point
c)
travels furthest away from the start point
d)
can be found in the middle of the chromatogram
10.
In paper chromatography, the MOST soluble solute .......
a)
does not move from the start point
b)
stays closest to the start point
c)
travels furthest away from the start point
d)
can be found in the middle of the chromatogram
11.
Why must the base line be drawn in pencil and not pen?
a)
a) Pencil is good at keeping substances in place.
b)
b) Pencil is soluble in water
c)
c) Pencil is insoluble in water
d)
d) Pencil is not coloured
12.
Something that CANNOT be dissolved is described as being…
a)
solute
b)
soluble
c)
insoluble
d)
solvent
e)
saturated
13.
The liquid that the solute will be dissolved into is the…
a)
solute
b)
soluble
c)
insoluble
d)
solvent
e)
saturated
14.
The solid that will be dissolved is the…
a)
solute
b)
soluble
c)
insoluble
d)
solvent
e)
saturated
15.
A solution that CAN’T dissolve anything else is…
a)
solute
b)
soluble
c)
insoluble
d)
solvent
e)
saturated
100 %
