chp 6

Question 1

test for starch

Answer 1

iodine sol (brown->blue black)

Question 2

test for protein

Answer 2

NaOH+CuSO4 (blue->purple)

Question 3

test for lipid

Answer 3

filter paper (translucent mark)

Question 4

test for reducing sugar

Answer 4

Bendict sol (blue->brick red)

Question 5

test for non reducing sugar

Answer 5

HCl + benedict sol (blue->brick red)

Question 6

energy val of food formula

Answer 6

4.2xmass of H2Oxrise in temp / mass of food

Question 7

% of V.C in fruit

Answer 7

vol of ascorbic acid /vol of juice x0.1

Question 8

conc of V.C in fruit

Answer 8

vol of ascorbic acid /vol of juice x1.0

Question 9

fat soluble V

Answer 9

ADEK

Question 10

H2O soluble V

Answer 10

B,C

Question 11

V.A uses

Answer 11

antioxidant,delay ageing process, prevent night blindness

Question 12

V.D uses

Answer 12

absorption of Ca + phosphorus, promote bone growth

Question 13

V.E uses

Answer 13

produce red.b.c, anitoxidant

Question 14

V.K uses

Answer 14

blood clotting

Question 15

V.B uses

Answer 15

healthy nervous system, form red blood cell, coenzyme in a.a metabolism

Question 16

V.C uses

Answer 16

antioxidant, improve Fe absorption

Question 17

V.A deficient

Answer 17

night blindness, scaly skin, cornea dry + opaque