JSS2 Third Term Basic Science Past Questions And Answers
20 JSS2 Third Term Basic Science questions with options and answers:
Question: What is the main function of the chloroplast in plant cells?
A) Storage of water
B) Photosynthesis
C) Cellular respiration
D) Nutrient absorption
Answer: B) Photosynthesis
Question: What is the process of converting light energy into electrical energy in solar cells called?
A) Photosynthesis
B) Photovoltaic effect
C) Respiration
D) Evaporation
Answer: B) Photovoltaic effect
Question: Which gas is responsible for the formation of acid rain?
A) Carbon dioxide
B) Nitrogen oxide
C) Oxygen
D) Methane
Answer: B) Nitrogen oxide
Question: What is the function of the mitochondria in animal cells?
A) Chlorophyll production
B) Cellular respiration
C) Photosynthesis
D) Nutrient storage
Answer: B) Cellular respiration
Question: What is the SI unit of electric charge?
A) Ampere
B) Coulomb
C) Volt
D) Ohm
Answer: B) Coulomb
Question: In the water cycle, what is the process by which water returns to the Earth’s surface in the form of rain, snow, or hail?
A) Evaporation
B) Condensation
C) Precipitation
D) Transpiration
Answer: C) Precipitation
Question: Which gas is essential for respiration in both plants and animals?
A) Carbon dioxide
B) Oxygen
C) Nitrogen
D) Hydrogen
Answer: B) Oxygen
Question: What is the function of the endocrine system in the human body?
A) Pumping blood
B) Regulating hormones
C) Digesting food
D) Filtering waste
Answer: B) Regulating hormones
Question: What is the process of a gas changing directly into a solid without passing through the liquid state?
A) Condensation
B) Sublimation
C) Deposition
D) Evaporation
Answer: C) Deposition
Question: Which organ in the human body produces bile?
A) Liver
B) Pancreas
C) Stomach
D) Kidneys
Answer: A) Liver
Question: What is the function of the ozone layer in the Earth’s atmosphere?
A) Absorbing ultraviolet radiation
B) Producing oxygen
C) Regulating temperature
D) Facilitating photosynthesis
Answer: A) Absorbing ultraviolet radiation
Question: Which type of energy is stored in the nucleus of an atom?
A) Thermal energy
B) Nuclear energy
C) Solar energy
D) Mechanical energy
Answer: B) Nuclear energy
Question: What is the process of the Earth moving around the sun in its orbit called?
A) Revolution
B) Rotation
C) Oscillation
D) Orbit
Answer: A) Revolution
Question: Which force opposes the motion of objects sliding past each other?
A) Gravitational force
B) Magnetic force
C) Frictional force
D) Tension force
Answer: C) Frictional force
Question: What is the process of the breakdown of rocks into smaller particles called?
A) Erosion
B) Weathering
C) Sedimentation
D) Deposition
Answer: B) Weathering
Question: What is the chemical symbol for potassium?
A) Po
B) K
C) Pt
D) Pb
Answer: B) K
Question: In the human eye, which part is responsible for focusing light onto the retina?
A) Cornea
B) Lens
C) Iris
D) Retina
Answer: B) Lens
Question: Which gas do humans exhale during the process of respiration?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
Answer: C) Carbon dioxide
Question: What is the main function of the red bone marrow in the human body?
A) Blood clotting
B) Muscle contraction
C) Blood cell formation
D) Digestion
Answer: C) Blood cell formation
Question: What is the process of water moving from the roots of plants to the leaves and then evapora
ting into the atmosphere called?
A) Transpiration
B) Respiration
C) Osmosis
D) Diffusion
Answer: A) Transpiration.
