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Others Trial 2025 Science Kertas 1 · SMKA

1
Diagram 1 shows the waste materials found in the Science laboratory. Which of the waste materials in Diagram 1 can be safely disposed of in the laboratory sink?
2
Which type of fire extinguisher is most suitable to extinguish this type of fire as in the Diagram 2?
3
Diagram 3 shows student suddenly chokes while eating bread during recess at the school canteen. The student gestures toward their neck and seems unable to speak or cough. What is the most appropriate action the victim's friend should take in this situation?
4
Which of the following is the best instrument to measure students' body temperature during a pandemic situation?
5
Table 1 below shows the BMI data of two students. | Student | Mass (kg) | Height (m) | BMI | |---|---|---|---| | Aminah | 45 | 1.55 | 18.7 | | Sarah | 82 | 1.60 | 32.0 | What is the most accurate finding based on the analysis of BMI data for Aminah and Sarah?
6
Which of the following is an example of green technology in the transportation sector?
7
Diagram 4 shows a stage in the process of mitosis. What occurs during the stage shown in Diagram 4?
8
Which of the following is an example of a chromosomal mutation?
9
Diagram 5 shows an example of the product of genetic engineering. Genetic research in agriculture produces breed of plant with certain desired characteristics. Which of the following is one of the desired characteristic?
10
Which human trait shows discontinuous variation?
11
Diagram 6 shows a giraffe from position R to position S. | | Height of centre of gravity | Stability | |---|---|---| | A | Increases | Increases | | B | Increases | Decreases | | C | Decreases | Increases | | D | Decreases | Decreases |
12
Which of the following is the correct function of tendon?
13
Diagram 7 shows a mangrove tree and a cucumber tree. Which of the following is the correct match for structure P and structure Q and their functions? | | Structure P | Structure Q | |---|---|---| | A | Buttress roots, Supporting the survival of pakau trees in swampy areas | Clasping roots, Support for obtaining sunlight | | B | Stilt root, Supporting the survival of pakau trees in swampy areas | Tendrills, Support for gaining sunlight | | C | Prop roots, Support the pakau tree to get sunlight | Tendrills, Support for gaining sunlight | | D | Stilt root, Supporting the survival of pakau trees in swampy areas | Clasping roots, Support for obtaining sunlight |
14
Diagram 8 shows an X endocrine gland. What is the function of the hormone secreted by the X gland?
15
Diagram 9 shows one effect of alcohol consumption on humans. How does this happen as a result of excessive alcohol consumption?
16
Diagram 10 shows an element found in the Modern Periodic Table of Elements. Among the following matches, which is the correct group and period position for the element S? | | Period | Group | |---|---|---| | A | 2 | 2 | | B | 3 | 2 | | C | 3 | 1 | | D | 2 | 1 |
17
Table 2 shows the information of two bromine isotopes. | Isotope | Number of proton | Number of neutron | Nucleon number | |---|---|---|---| | Bromine-79 | X | Y | 79 | | Bromine-81 | 35 | Z | 81 | Which of the following are X, Y and Z? | | X | Y | Z | |---|---|---|---| | A | 33 | 46 | 35 | | B | 35 | 44 | 33 | | C | 33 | 44 | 46 | | D | 35 | 44 | 46 |
18
The information below shows the properties of two examples of alloys. ALLOY A - Lightweight - Corrosion resistant - Pure aluminum metal ALLOY B - Hard - Strong - Pure metal iron Which of the following is correct about the uses of alloy A and alloy B? | | Alloy A | Alloy B | |---|---|---| | A | To make frame of aircrafts | Construction materials for building | | B | To make decorative | Construction materials for bridges | | C | To make monuments | To make frame of aircrafts | | D | To make keys | To make medals |
19
Among the following types of glass, which is suitable for making laboratory apparatus such as boiling tubes?
20
Diagram 11 shows a situation faced by a man. What is material S?
21
Diagram 12 shows the condition of an apple exposed to air after being cut and undergoing process X. Which of the following is the correct match to represent process X and the solution that can slow down process X in apples? | | Process X | Solutions that can slow down process X | |---|---|---| | A | Neutralization | Sugar solution | | B | Oxidation process | Distilled water | | C | Neutralization | Sodium bicarbonate solution | | D | Oxidation process | Salt solution |
22
Diagram 13 shows the motion graph of a motorcycle. Based on the graph above, determine the total displacement traveled by the motorcycle. Displacement = area under the velocity-time graph
23
Diagram 14 shows feathers being dropped into two cylindrical tubes A and B. Which of the following is true about the situation? | | A | B | |---|---|---| | A | Affected by gravitational force and air resistance | Affected by gravitational force and air resistance | | B | Affected by gravitational force and air resistance | Not affected by gravitational force and air resistance | | C | Affected by gravitational force and air resistance | Affected by gravitational force and no air resistance | | D | Affected by gravitational force and no air resistance | Affected by gravitational force and air resistance |
24
Nuclear power plants supply electricity to urban areas. However, their use is still debated in terms of safety and environmental impact. Which method can be taken to reduce the negative effects of nuclear energy use on the environment?
25
Diagram 15 shows one nuclear power plant. Based on Diagram 15, what are the main process that occur in a nuclear power plant?
26
Which microorganism is used in the fermentation?
27
The information below shows the uses of material S. - Remove odour - Produces enzyme - Improves the fishing industry What is material S?
28
Table 3 shows the condition of three types of plants A, B and C. | Plant | Condition of plant | |---|---| | A | The leaves on the upper side are smaller and fall off easily | | B | The leaves on the upper side are smaller and purple | | C | The leaves on the upper side have brown spots, curled tips and chlorosis | Which of the following statements is correct?
29
Diagram 16 shows part of the Nitrogen Cycle. Which of the following correctly represents bacteria Q and bacteria P? | | Bacteria P | Bacteria Q | |---|---|---| | A | Decomposing bacteria | Nitrogen-fixing bacteria | | B | Nitrogen-fixing bacteria | Denitrifying bacteria | | C | Decomposing bacteria | Nitrifying bacteria | | D | Denitrifying bacteria | Nitrifying bacteria |
30
Diagram 17 shows a type of food. What is the most suitable processing technology to use so that the makanan In Diagram 17 lasts longer?
31
The information below shows the causes of one type of environmental pollution P. - Deforestation - Industrial activities - Combustion of fuels in vehicles or machines Which of the following is the type of the environmental pollution P?
32
Among the reactant pairs in Table 4, which one can produce a high reaction rate? | R | 1.0 mol dm^-3 hydrochloric acid | |---|---| | S | 0.001 mol dm^-3 hydrochloric acid | | T | Marble powder | | U | Marble chips |
33
Diagram 18 shows an experiment carried out in the laboratory. What factors affect the rate of the reaction above?
34
The information below is an effect of taking excessive amounts of substance X. - Blurred vision - Irritation to stomach wall causes bleeding and ulcers - Damage to liver cells What is substance X?
35
Diagram 19 shows a cross-section of an artery affected by atherosclerosis. Which food, if consumed in excess, can cause the deposition of substance S on the artery walls?
36
Diagram 20 shows a cross section of a palm oil fruit. Among the following structures of the oil palm fruit, which part produces high quality palm oil?
37
Diagram 21 shows the apparatus for the wastewater treatment process using the electrocoagulation method. Which statement is true about the electrolysis of wastewater process shown in Diagram 21?
38
Diagram 22 shows several ray diagrams. Among all the light ray diagrams in Diagram 22, which one is correct?
39
Which of the following statements is correct about Pascal's principle?
40
Diagram 23 shows the types of satellite orbits that surround the Earth. Among A, B, C and D in Diagram 23, which orbit represents High Earth Orbit (HEO)?
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