Page 15 - Ranger SPM 2022 - Science

Science SPM Chapter 1 Safety Measures in the Laboratory
6. How is the disposal of animal carcasses B Water can cause a bigger fire
done? C Water can cause a big explosion
A Wrapped with tissue and D Water is a good insulator of
decontaminated by autoclaving electricity
Penerbitan Pelangi Sdn Bhd. All Rights Reserved.
B Wrapped with paper, stored in
biohazard bag and frozen 9. Which of the following is the
C Burned in an incinerator correct sequence for handling a fire
D Wrapped with paper and buried in extinguisher?
an open area A Pull pin Direct nozzle towards
fire source Squeeze handle
7. Figure 1 shows a car fire resulted from Spray from side to side
a fuel tank leak. B Direct towards fire source Pull
pin Squeeze handle Spray Form 4
from side to side
C Squeeze handle Pull pin
Direct towards fire source
Spray from side to side
D Pull pin Squeeze handle
Direct towards fire source
Spray from side to side
Figure 1
What type of fire extinguisher can be 10. What are the important things to do
used to extinguish the fire? when carrying out a fire extinguisher
audit?
P : Water
Q : Dry powder M : Carry out the audit every day
R : Foam N : Check the expiry date on the fire
S : Carbon dioxide extinguisher
O : Check the pressure reading on the
A P and Q C Q and R fire extinguisher
B P and R D Q and S P : Carry out the audit on one fire
extinguisher only
8. Why is water not suitable for A M and N
extinguishing a fire caused by an B N and O
electrical appliance? C M, N and O
A Water can conduct electricity well D M, N and P

11

F4 Chapter 1.indd 11 3/21/22 3:02 PM