Section II

Questions 7 - 12

Question 7
C

Question 8
B

Question 9
13/40

Chance both white = 2/8 x 4/10 = 8/80
Chance both blue = 2/8 x 3/10 = 6/80
Chance both grey = 4/8 x 3/10 = 12/80

So total = 8/80 + 6/80 + 12/80 = 26/80

Question 10
C

In the stomach, hydrochloric acid is secreted (more acidic), and protein digestion begins (less protein, more peptides).

Question 11
D

Λ x f = c ; so Λ = 3 x 10⁸ / (1000 x 1000) = 3000 m

Question 12

1 = B (as 4 electrons in outer shell)
2 = C or D ( C is sodium and D is Calcium)
3 = A (gas is inert gas)
4 = D (group 2 as 2 electrons in outer shell)

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