What is the basic unit of life in all living organisms?
• A) Atom
• B) Cell
• C) Tissue
• D) Molecule
B) Cell
What is the chemical symbol for water?
H2O
What is the unit of force in the International System of Units (SI)?
• A) Joule
• B) Newton
• C) Watt
• D) Pascal
B) Newton
What is the square root of 64?
• A) 6
• B) 7
• C) 8
• D) 9
Answer: C) 8
What process do plants use to convert sunlight into energy?
• A) Respiration
• B) Photosynthesis
• C) Fermentation
• D) Transpiration
B) Photosynthesis
What is the name of the gas that humans exhale and plants use for photosynthesis?
• A) Oxygen
• B) Nitrogen
• C) Carbon monoxide
• D) Carbon dioxide
D) Carbon dioxide
What is the formula to calculate speed?
• A) Speed = force × time
• B) Speed = mass ÷ distance
• C) Speed = distance ÷ time
• D) Speed = acceleration ÷ force
C) Speed = distance ÷ time
What is the formula for the area of a triangle?
1/2* Base* Height
Which part of the cell is responsible for controlling cell activities and contains genetic material?
• A) Nucleus
• B) Mitochondria
• C) Ribosome
• D) Cytoplasm
A) Nucleus
What is the pH of a neutral solution?
• A) 6
• B) 7
• C) 8
• D) 10
B) 7
What is the name of the force that opposes motion between two surfaces in contact?
• A) Gravity
• B) Friction
• C) Tension
• D) Magnetic force
B) Friction
If 5x + 3 = 18 , what is x ?
• A) 5
• B) 3
• C) 2
• D) 1
B) 3
Which of the following statements about atomic orbitals is correct?
A) The 2p orbital can hold a maximum of 6 electrons, all with the same spin.
B) The 3d subshell contains 5 orbitals, each with a different shape.
C) The 4s orbital is filled with electrons before the 3d orbitals.
D) The shape of the s -orbital is dumbbell-shaped.
C) The 4s orbital is filled with electrons before the 3d orbitals.
What type of blood vessel carries oxygenated blood away from the heart?
• A) Vein
• B) Artery
• C) Capillary
• D) Lymphatic vessel
B) Artery
What is the name of the process by which a solid changes directly into a gas?
• A) Condensation
• B) Evaporation
• C) Sublimation
• D) Deposition
C) Sublimation
What does the term “refraction” describe in physics?
• A) The spreading of light through a small opening
• B) The bending of light as it passes through a different medium
• C) The reflection of light off a surface
• D) The separation of light into different colors
B) The bending of light as it passes through a different medium
What is the Pythagorean theorem?
a2+b2=c2
What is the name of the enzyme that breaks down starch into maltose during digestion?
• A) Protease
• B) Lipase
• C) Amylase
• D) Pepsin
C) Amylase
What is the number of moles in 22.4 liters of a gas at STP (Standard Temperature and Pressure)?
• A) 0.5 moles
• B) 1 mole
• C) 2 moles
• D) 10 moles
Answer: B) 1 mole
What is the law of conservation of energy?
• A) Energy can only be created under specific conditions.
• B) Energy cannot be created or destroyed, only transformed.
• C) Energy is destroyed in a closed system.
• D) Energy flows only in one direction.
B) Energy cannot be created or destroyed, only transformed.
A train travels 120 km at 40 km/h and then 180 km at 60 km/h. What is the average speed?
• A) 45 km/h
• B) 48 km/h
• C) 50 km/h
• D) 55 km/h
B) 48 km/h