Plant Oils And Their Uses Worksheet With Answers - George Pindar School Page 25
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36(b)
bromine
1
(c)
temperature needs to be high / above 100 °C
allow melting point
1
or
(sunflower oil has a) high(er) boiling point
or
boiling point of water is not high enough
any one from:
•
remove water / make potato crisp(er)
accept water makes potato soft / soggy
•
adds / gives flavour
1
[5]
M4.
(i)
(poly)unsaturated
accept monounsaturated
1
(ii)
(turns) colourless or colour disappears / decolourises
do not accept clear
1
stays the same colour / orange / no change
allow yellow-orange / orange-brown / red-orange
1
(iii)
(react) with hydrogen / H2 / hydrogenation
1
any one from:
•
heated / 60 °C
•
catalyst / nickel
1
[5]
Page 25 of 36
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