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1.
(a) 21 21 16 16 (%) 0.03 4.00 0.03 4.00 () 17 34 17 34
P Q R S (i)
3 1
(ii)
(iii)
2 (iv) (1) (2) (v) 1 1 1
2001-CE BIO 2-1
1.
(b) 2 cm3 A B B
A B (%) 0.3 1.5
0 15 0 5
(i) (1) B 3
(2) B 1 (ii) B 2 4
(iii) A
2001-CE BIO 2-2
1.
(c)
(i)
1 1
(ii)
(iii) 2 (iv)
(1) (2) (3) 2001-CE BIO 2-3
1 2 4
2.
(a)
(i)
1
5 3
(ii) 2
(iii) 2 3
2001-CE BIO 2-4
2.
(b)
(i)
(1) 2
(2) 3 (ii) (1) (2) 2. (c) 2 3
(i)
3 4
(ii)
(iii) 4 2001-CE BIO 2-5
3.
(a)
(i)
A (1) (2) A 1 1
(ii) B (1) 2 (2) B 1 (3) B 2 (iii) 3
2001-CE BIO 2-6
3.
(b) pH
pH 3 5 7 9 11 (i) T (s) >100 50 20 20 27 2 2
(ii) (1) T
(2) (1) pH 3 (iii) (1) pH (2) pH 1 1
(iv) 4 2 2001-CE BIO 2-7
3.
(c)
(i)
C B 2
(ii) 2 (iii) C (1) (2) 1
2001-CE BIO 2-8
4.
(a)
(i)
1 3 2
(ii) (i) (iii) (iv)
(1) 3 (2) 2
2001-CE BIO 2-9
4.
(b)
(i)
A. B 3 1
(ii) (1) X
(2) X 4 (iii) Y 2
2001-CE BIO 2-10
4.
(c)
20
(i)
5 7
2
(ii) 5 (iii) 2
2001-CE BIO 2-11
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