Plant Oils And Their Uses Worksheet With Answers - George Pindar School Page 10
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36Q7.
Some fruits, seeds and nuts are sources of vegetable oils.
The table gives some information about three types of vegetable oil.
Corn
Olive
Rapeseed
oil
oil
oil
Saturated fat in %
14.4
14.3
6.6
Unsaturated fat in %
81.2
81.2
88.6
−18 to −5
−12 to −6
−10 to +5
Melting point in °C
Smoke point in °C
229 to 268
204 to 210
230 to 240
The smoke point is the temperature range at which the oil begins to produce smoke when
heated.
(a)
Use information from the table above to answer these questions.
(i)
Tick ( ) one correct reason why a vegetable oil has a range for the melting point.
Reason
Tick ( )
A vegetable oil has a high percentage of unsaturated fat.
A vegetable oil has a range for the smoke point.
A vegetable oil has a mixture of fats.
(1)
(ii)
Complete the sentence.
The type of vegetable oil with the largest temperature range of smoke point is
..................................................................................... .
(1)
3
(b)
Bromine water was added drop by drop to 5 cm
of each type of vegetable oil.
(i)
Draw a ring around the correct answer to complete the sentence.
colourless.
The colour of the first drop of bromine water changes from orange to
green.
white.
(1)
Page 10 of 36
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education