Chemistry Worksheet: Disposal and Fire Extinguishers

Antara berikut, bahan yang manakah boleh dibuang ke dalam singki?

• Asid lemah (Weak acid)

• Logam berat (Heavy metal)

• Bahan reaktif (Reactive substances)

• Pelarut organik (Organic solvent)

Antara berikut, padanan manakah yang betul tentang pemadam kebakaran dan warna label?

• Air (Water) - Hitam (Black)

• Buih (Foam) - Krim (Cream)

• Serbuk kering (Dry powder) - Merah (Red)

• Karbon dioksida (Carbon dioxide) - Biru (Blue)

What should be done if the victim has started breathing but is still unconscious?

• Loosen the victim’s clothing

• Add pressure to his chest

• Blows into the mouth repeatedly

• Position the victim’s body on his side

Raju’s body mass is 55kg and his height is 1.65m. What is Raju’s BMI?

• 20.20 kg m⁻²

• 33.33 kg m⁻²

• 53.35 kg m⁻²

• 56.65 kg m⁻²

What is the source of alternative fuel that can be used to reduce socio-scientific issues in the energy sector?

• Gas asli (Natural gas)

• Geoterma (Geothermal)

• Petroleum (Petroleum)

• Arang batu (Coal)

What is the effect of the activity on the environment?

• Pemanasan global (Global warming)

• Banjir kilat (Flash flood)

• Eutrofikasi (Eutrophication)

• Hujan asid (Acid rain)

What is the possible phenotype ratio for the offspring produced from the mating of Pp × pp?

• All purple flowers

• All white flowers

• 1 purple flower : 1 white flower

• 3 purple flowers : 1 white flower

Which of the following is the correct match for the factors that cause variation?

• Genetic factor: pH value, Environmental factor: Chromosome arrangement

• Genetic factor: Cloning, Environmental factor: Sunlight

• Genetic factor: Nutrition, Environmental factor: Fertilisation

• Genetic factor: Crossing over, Environmental factor: Climate

What is the main function of the skeletal system in vertebrates?

• Menyerap nutrien (Absorb nutrients)

• Membantu dalam fotosintesis (Assist in photosynthesis)

• Menghasilkan tenaga secara langsung (Produce energy directly)

• Menyokong badan dan melindungi organ dalaman (Support the body and protect internal organs)

What is the role of muscle X and muscle Y when the arm is bent?

• Muscle X: Relaxes, Muscle Y: Relaxes

• Muscle X: Contracts, Muscle Y: Relaxes

• Muscle X: Relaxes, Muscle Y: Contracts

• Muscle X: Contracts, Muscle Y: Contracts