Plant Oils And Their Uses Worksheet With Answers - George Pindar School Page 5
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36(c)
Water has a boiling point of 100 °C. Sunflower oil has a boiling point above 232 °C.
Suggest why sunflower oil and not water is used to make crisps from thin slices of potato.
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(2)
(Total 5 marks)
Q4.
This information was taken from a label on a packet of crisps.
Main ingredients:
Potatoes, vegetable oil, Worcester sauce
flavour,
colourings, flavourings, salt.
Nutritional information (per 100 g):
Energy
2040 kJ
Protein
6.5 g
Carbohydrate
55 g
of which sugars
3 g
Fat
27 g
of which saturates
9 g
unsaturates
18 g
Fibre
4.5 g
Sodium
1.2 g
Saturated fats are linked to heart problems. In order to claim that their crisps are healthy, the
manufacturer keeps the proportion of saturated fats low.
(i)
What type of fat contains double carbon carbon bonds?
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(1)
Page 5 of 36
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