SPM Science · 2025 · Selangor · Percubaan Kertas 1

A student wants to carry out an experiment involving volatile chemicals. What is the most suitable personal protective equipment should be used?

What is an example of waste material that can be disposed of through the laboratory sink after being autoclaved?

Which of the following causes leads a person to be given Heimlich Manoeuvre emergency aid?

Diagram 1 shows the blood pressure reading of an adult male while at rest.

图 1

What is the man's blood pressure category?

A man has a body mass of 57 kg and a height of 1.73 m. What is her Body Mass Index (BMI)?

$BMI = \dfrac{\text{Body mass (kg)}}{(\text{Height})^2 (m^2)}$

What material is the main contributor to solid waste in the waste and wastewater management sector?

The increase in the number of vehicles in country X has resulted in a sudden increase in environmental temperature. Among the following, what action should be taken to overcome the problem?

Diagram 2 shows an activity carried out to address socio-scientific issues in the transport sector.

图 2

Based on Diagram 2, what is the effect of the activity to the environment?

Which of the following is an example of a dominant trait in humans?

The information below indicates a type of genetic disease.

Individuals who have a recessive mutant gene on the X chromosome.

Commonly occurs in men

What is the name of the mutation disease?

Which of the following is true about genetically modified organisms or GMOs?

Diagram 3 shows an animal in motion.

图 3

How can the animal ensure that its body does not fall while standing?

Which of the following provides support to non-woody plants on the ground?

What type of drug causes someone to hear voices that are non-existent?

Diagram 4 shows the position of P in the incomplete Modern Periodic Table of Elements.

图 4

What is the proton number of element P?

Which of the following metals is used to produce steel?

Diagram 5 shows the type of treatment practiced by residents in a housing area

图 5

Based on Diagram 5, what conclusions can be drawn from the graph?

Diagram 6 shows some examples of healthy foods.

图 6

What is the effect of consuming these foods on the health of the body?

What is the condition that cause objects to experience free fall?

The information below shows a statement about a nuclear plant accident.

Accidents that occurred at nuclear power plants such as Chernobyl (1986) and Fukushima (2011) have resulted in thousands of local residents having to be evacuated and the surrounding area is no longer safe to live in.

Based on the above information, what are the main risks of nuclear power plant accidents to humans?

What is the group of microorganisms used in the leather goods manufacturing industry?

Among the following, what is the microorganism that cause athlete's foot disease and its treatment?

Diagram 7 shows a woman's breakfast menu.

图 7

Based on Diagram 7, what is the function of the part labeled X?

Among the following, what is the natural phenomenon that converts nitrogen in the air to nitrate ions into the soils?

Table 1 shows some of the efforts carried out in the agricultural sector in Malaysia.

Based on Table 1, what is the purpose of the efforts?

Siti is allergic to peanuts. Among the following, which information on food label should she pay attention to avoid experiencing severe allergic reactions?

Among the following, what are the carbon handprint measures for efficient waste management?

What is the role of each individual in reducing the carbon dioxide content in the air?

Diagram 8 shows a condition of an iron fence.

图 8

Based on Diagram 8, what is the reaction involved?

Diagram 9 shows a cooking utensil available on the market.

图 9

What is the main function of the cooking utensil?

Which of the following is the correct information on the members of the alkene homologous group?

Which of the following is characteristic of saturated fat?

Diagram 10 shows some of the steps in the process of industrial palm oil extraction.

图 10

Based on the Diagram 10, what is the purpose of the Process X?

Diagram 11 shows an electrolytic cell.

图 11

Based on Diagram 11, what ions move to electrode X and electrode Y?

Which of the following is correct about simple chemical cell?

Diagram 12 shows a type of lens.

图 12

Based on Diagram 12, what happens to the light ray after passing through the lens?

Diagram 13 shows a type of optical instrument.

图 13

A student is using an optical instrument as shown in Diagram 13. He found the resulting image blurry and too small. What steps should be taken to overcome this problem?

Diagram 14 shows a hydraulic jack system.

图 14

What is the force exerted by piston M?

$\dfrac{\text{Input force}}{\text{Area of small piston}} = \dfrac{\text{Output force}}{\text{Area of large piston}}$

A satellite is orbiting the Earth at an altitude of 705 km with a speed of 27,500 km/h. What type of orbit is used by this satellite?

What is the segment that use Global positioning System (GPS) receivers such as smartphones?