Page 16 - Ranger SPM 2022 - Science

Science SPM Chapter 1 Safety Measures in the Laboratory

Subjective Questions (c) After conducting the experiment,
HOTS the students need to dispose of
HOTS
Section A the needles and blood samples.
What is the correct method
1. Figure 1 shows the results of an of disposal of both biological
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experiment conducted to identify the wastes? [2 marks]
blood group of the students of Form
4 Zamrud.
A O AB O Section B
B O A B
A A A O 2. Figure 2 shows a fire that took place
AB B B A in a laboratory.
O O O O
Figure 1
Form 4
(a) Complete Table 1 based on Figure
1 above.
Table 1
Blood group Number of students
A 6 Figure 2
B 4 (a) What is the cause of the fire?
AB [1 mark]
O 2 (b) Tick (3) the suitable types of fire
[1 mark] extinguisher that can be used to
(b) Using the data in Table 1, draw put out the fire in Figure 2.
a bar chart of the number of
students against blood group. (i) (ii) (iii) (iv)
Number of students

10

8
[2 marks]
6
(c) During the fire, a student’s clothes
caught fire causing the fire to
4
spread over the whole body.
State the most suitable type of
2 fire extinguisher that can be used
to put out the fire on the student’s
Blood body. Explain your answer.
A B O AB group [2 marks]
Blood group
[2 marks]

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F4 Chapter 1.indd 12 3/21/22 3:02 PM