Science Double Award Paper 1
Instructions:

Choose the correct answer for each question.

Each question is worth 1 mark.

Total marks: 50
Section A: Biology
1. What is the basic unit of life?
A) Atom
B) Cell
C) Tissue
D) Organ
2. Which organelle is responsible for energy production?
A) Nucleus
B) Ribosome
C) Mitochondria
D) Golgi apparatus
3. What process do plants use to make food?
A) Respiration
B) Photosynthesis
C) Fermentation
D) Digestion
4. Which part of the human body is primarily responsible for gas exchange?
A) Heart
B) Lungs
C) Liver
D) Kidneys
5. What is the function of red blood cells?
A) Fight infection
B) Carry oxygen
C) Clot blood
D) Produce hormones
6. Which of the following is a characteristic of living organisms?
A) Growth
B) Inability to reproduce
C) Lack of response to stimuli
D) None of the above
7. What is the primary pigment involved in photosynthesis?
A) Carotene
B) Chlorophyll
C) Xanthophyll
D) Melanin
8. Which type of cell division produces gametes?
A) Mitosis
B) Meiosis
C) Binary fission
D) Budding
9. What is the role of enzymes in biological reactions?
A) Increase temperature
B) Decrease activation energy
C) Change the pH
D) None of the above
10. Which of the following is a function of the endocrine system?
A) Hormone production
B) Protection of organs
C) Digestion
D) Respiration
Section B: Chemistry
11. What is the smallest unit of an element?
A) Molecule
B) Atom
C) Compound
D) Ion
12. Which of the following is a noble gas?
A) Oxygen
B) Nitrogen
C) Helium
D) Carbon
13. What is the chemical formula for water?
A) H₂ O
B) CO₂
C) O₂
D) H₂ O₂
14. Which of the following is an example of a chemical change?
A) Melting ice
B) Boiling water
C) Rusting iron
D) Dissolving sugar
15. What is the pH of a neutral solution?
A) 0
B) 7
C) 14
D) 10
16. Which of the following is an acid?
A) NaCl
B) HCl
C) NaOH
D) KCl
17. What type of bond involves the sharing of electrons?
A) Ionic bond
B) Covalent bond
C) Metallic bond
D) Hydrogen bond
18. What is the molar mass of carbon (C)?
A) 6 g/mol
B) 12 g/mol
C) 14 g/mol
D) 16 g/mol
19. Which of the following is a property of metals?
A) Brittle
B) Good conductors of heat
C) Dull appearance
D) Low density
20. What is the process of a solid turning directly into a gas called?
A) Melting
B) Freezing
C) Sublimation
D) Condensation
Section C: Physics
21. What is the unit of force?
A) Joule
B) Newton
C) Watt
D) Pascal
22. Which law states that an object in motion stays in motion?
A) Newton's First Law
B) Newton's Second Law
C) Newton's Third Law
D) Law of Conservation of Energy
23. What is the speed of light in a vacuum?
A) 300,000 km/s
B) 150,000 km/s
C) 1,000 km/s
D) 3,000 km/s
24. What is the formula for calculating kinetic energy?
A) KE = mv²
B) KE = ½ mv²
C) KE = mgh
D) KE = Fd
25. Which of the following is a vector quantity?
A) Speed
B) Distance
C) Velocity
D) Time
26. What type of wave is a sound wave?
A) Transverse wave
B) Longitudinal wave
C) Electromagnetic wave
D) Surface wave
27. What unit is used to measure electric current?
A) Volt
B) Ampere
C) Ohm
D) Watt
28. What does Ohm’s law state?
A) V = IR
B) F = ma
C) E = mc²
D) P = IV
29. What is the energy transferred when a force of 10 N moves an object 3 meters?
A) 3 J
B) 10 J
C) 13 J
D) 30 J
30. Which planet has the strongest gravitational pull?
A) Earth
B) Jupiter
C) Mars
D) Venus
31. What is measured in hertz (Hz)?
A) Wavelength
B) Frequency
C) Amplitude
D) Speed
32. Which form of energy is stored energy?
A) Kinetic energy
B) Potential energy
C) Thermal energy
D) Electrical energy
33. What happens to the resistance of a conductor if its temperature increases?
A) Increases
B) Decreases
C) Stays the same
D) Drops to zero
34. How much work is done when a force of 15 N moves an object 4 m in the
direction of the force?
A) 19 J
B) 60 J
C) 11 J
D) 4 J
Section D: Combined Science / Practical / General Knowledge
35. What is the metric unit for measuring energy?
A) Watt
B) Joule
C) Newton
D) Volt
36. Which of the following is not a greenhouse gas?
A) Carbon dioxide
B) Methane
C) Oxygen
D) Nitrous oxide
37. What type of reaction occurs when an acid reacts with a base?
A) Combustion
B) Neutralization
C) Oxidation
D) Reduction
38. Which gas is commonly used in balloons because it is lighter than air?
A) Oxygen
B) Hydrogen
C) Helium
D) Nitrogen
39. In the carbon cycle, which process removes carbon dioxide from the
atmosphere?
A) Respiration
B) Combustion
C) Photosynthesis
D) Decomposition
40. What does DNA stand for?
A) Deoxyribonucleic acid
B) Deoxyribose nucleic acid
C) Dioxyribose acid
D) Deoxinucleic acid
41. Which of the following instruments measures electric current?
A) Voltmeter
B) Ammeter
C) Ohmmeter
D) Thermometer
42. What device converts chemical energy into electrical energy?
A) Motor
B) Generator
C) Battery
D) Transformer
43. What does a balanced diet provide?
A) Only carbohydrates
B) Vitamins, minerals, protein, fat, and carbohydrates
C) Only vitamins and minerals
D) Only protein
44. What is the main gas responsible for acid rain?
A) Carbon dioxide
B) Sulfur dioxide
C) Oxygen
D) Nitrogen
45. During photosynthesis, oxygen is produced from which component?
A) Carbon dioxide
B) Water
C) Glucose
D) Chlorophyll
46. Which part of the electromagnetic spectrum has the longest wavelength?
A) Ultraviolet
B) Infrared
C) Radio waves
D) X-rays
47. In a circuit, what does a resistor do?
A) Increases current
B) Decreases current
C) Adds voltage
D) Converts energy to light
48. What is the SI base unit for temperature?
A) Celsius
B) Fahrenheit
C) Kelvin
D) Joule
49. What type of reaction is photosynthesis classified as?
A) Endothermic
B) Exothermic
C) Neutral
D) Combustion
50. Which subatomic particle has a positive charge?
A) Electron
B) Neutron
C) Proton
D) Photon