Subject: Science
Time: 3 hours
Instructions:
* The question paper consists of two parts, Part A and Part B.
* Part A consists of 50 multiple-choice questions, each carrying one mark.
* Part B consists of 8 long-answer questions, each carrying five marks.
* Answer all questions in Part A and any five questions in Part B.
* Write your answers clearly and legibly.
* Use a black or blue pen to answer the questions.
Part A: Multiple-Choice Questions
1. Which of the following is not a renewable energy source?
a) Solar energy
b) Wind energy
c) Fossil fuels
d) Hydroelectric energy
2. The atomic number of an element represents the number of:
a) Protons
b) Neutrons
c) Electrons
d) Isotopes
3. Which of the following is not a greenhouse gas?
a) Carbon dioxide
b) Methane
c) Oxygen
d) Nitrous oxide
4. The largest organ in the human body is:
a) Heart
b) Liver
c) Lungs
d) Skin
5. The process by which plants convert sunlight into energy is called:
a) Photosynthesis
b) Respiration
c) Transpiration
d) Absorption
Part B: Long-Answer Questions
6. Explain the different types of chemical reactions.
7. Derive the formula for the area of a circle.
8. Describe the process of mitosis.
9. Explain the concept of electromagnetic induction.
10. Describe the structure and function of the human heart.
11. Explain the different types of ecosystems.
12. Derive the formula for the period of a simple pendulum.