JSS2 Second Term Basic Science Past Questions And Answers
20 JSS2 Second Term Basic Science questions with options and answers:
Question: What is the chemical formula for table salt?
A) NaCl
B) H2O
C) CO2
D) O2
Answer: A) NaCl
Question: What type of energy does the sun primarily emit?
A) Thermal energy
B) Nuclear energy
C) Solar energy
D) Electrical energy
Answer: C) Solar energy
Question: Which of the following is a non-metal?
A) Iron (Fe)
B) Sodium (Na)
C) Oxygen (O)
D) Calcium (Ca)
Answer: C) Oxygen (O)
Question: In the human digestive system, where does most nutrient absorption occur?
A) Stomach
B) Small intestine
C) Large intestine
D) Esophagus
Answer: B) Small intestine
Question: What is the process of converting a liquid into a gas called?
A) Condensation
B) Evaporation
C) Sublimation
D) Melting
Answer: B) Evaporation
Question: Which planet is known as the “Blue Planet”?
A) Earth
B) Neptune
C) Uranus
D) Saturn
Answer: A) Earth
Question: What is the function of the red blood cells in the human body?
A) Carrying oxygen
B) Fighting infections
C) Clotting blood
D) Producing hormones
Answer: A) Carrying oxygen
Question: What is the main gas responsible for the greenhouse effect on Earth?
A) Oxygen
B) Carbon Dioxide
C) Nitrogen
D) Methane
Answer: B) Carbon Dioxide
Question: Which force keeps planets in orbit around the sun?
A) Magnetic force
B) Gravitational force
C) Centrifugal force
D) Electrostatic force
Answer: B) Gravitational force
Question: What is the process of converting sunlight into energy in plant cells called?
A) Respiration
B) Photosynthesis
C) Transpiration
D) Digestion
Answer: B) Photosynthesis
Question: Which of the following is a conductor of electricity?
A) Wood
B) Rubber
C) Copper
D) Plastic
Answer: C) Copper
Question: What is the chemical symbol for carbon?
A) Ca
B) C
C) Co
D) Cu
Answer: B) C
Question: Which layer of the Earth is solid and composed mainly of iron and nickel?
A) Crust
B) Mantle
C) Outer core
D) Inner core
Answer: D) Inner core
Question: What is the function of the nervous system in the human body?
A) Pumping blood
B) Regulating temperature
C) Transmitting signals
D) Digesting food
Answer: C) Transmitting signals
Question: What is the unit of measurement for temperature in the metric system?
A) Fahrenheit
B) Kelvin
C) Celsius
D) Rankine
Answer: C) Celsius
Question: Which gas is responsible for the natural color of the Earth’s sky?
A) Oxygen
B) Nitrogen
C) Helium
D) Water vapor
Answer: B) Nitrogen
Question: What is the function of the kidneys in the human body?
A) Producing insulin
B) Filtering blood
C) Pumping oxygen
D) Digesting food
Answer: B) Filtering blood
Question: Which type of rock is formed from the cooling and solidification of magma or lava?
A) Sedimentary
B) Metamorphic
C) Igneous
D) Conglomerate
Answer: C) Igneous
Question: What is the SI unit of force?
A) Watt
B) Joule
C) Newton
D) Volt
Answer: C) Newton
Question: What is the process of a substance changing directly from a solid to a gas without
passing through the liquid state?
A) Condensation
B) Evaporation
C) Sublimation
D) Melting
Answer: C) Sublimation.
