October 8, 2025 at 1:00 AM
October 2, 2025 at 11:48 PM
September 11, 2025 at 3:08 AM
16. Which planet is the largest in the solar system?
A) Earth
B) Saturn
C) Jupiter
D) Neptune
✅ Answer: C) Jupiter
📖 Explanation: Jupiter is the largest planet, more than 11 times the diameter of Earth.
A) Earth
B) Saturn
C) Jupiter
D) Neptune
✅ Answer: C) Jupiter
📖 Explanation: Jupiter is the largest planet, more than 11 times the diameter of Earth.
September 7, 2025 at 2:59 AM
16. Which planet is the largest in the solar system?
A) Earth
B) Saturn
C) Jupiter
D) Neptune
✅ Answer: C) Jupiter
📖 Explanation: Jupiter is the largest planet, more than 11 times the diameter of Earth.
A) Earth
B) Saturn
C) Jupiter
D) Neptune
✅ Answer: C) Jupiter
📖 Explanation: Jupiter is the largest planet, more than 11 times the diameter of Earth.
15. What is the main component of natural gas?
A) Propane
B) Butane
C) Methane
D) Ethane
✅ Answer: C) Methane
📖 Explanation: Methane is the primary component of natural gas.
A) Propane
B) Butane
C) Methane
D) Ethane
✅ Answer: C) Methane
📖 Explanation: Methane is the primary component of natural gas.
September 7, 2025 at 2:58 AM
15. What is the main component of natural gas?
A) Propane
B) Butane
C) Methane
D) Ethane
✅ Answer: C) Methane
📖 Explanation: Methane is the primary component of natural gas.
A) Propane
B) Butane
C) Methane
D) Ethane
✅ Answer: C) Methane
📖 Explanation: Methane is the primary component of natural gas.
14. What is the process of liquid turning into gas called?
A) Condensation
B) Sublimation
C) Evaporation
D) Freezing
✅ Answer: C) Evaporation
📖 Explanation: Evaporation is the process by which liquid water changes into vapor.
A) Condensation
B) Sublimation
C) Evaporation
D) Freezing
✅ Answer: C) Evaporation
📖 Explanation: Evaporation is the process by which liquid water changes into vapor.
September 7, 2025 at 2:58 AM
14. What is the process of liquid turning into gas called?
A) Condensation
B) Sublimation
C) Evaporation
D) Freezing
✅ Answer: C) Evaporation
📖 Explanation: Evaporation is the process by which liquid water changes into vapor.
A) Condensation
B) Sublimation
C) Evaporation
D) Freezing
✅ Answer: C) Evaporation
📖 Explanation: Evaporation is the process by which liquid water changes into vapor.
13. Which organ is responsible for removing waste from the blood?
A) Heart
B) Liver
C) Kidneys
D) Brain
✅ Answer: C) Kidneys
📖 Explanation: Kidneys filter waste products and excess fluids from the blood.
A) Heart
B) Liver
C) Kidneys
D) Brain
✅ Answer: C) Kidneys
📖 Explanation: Kidneys filter waste products and excess fluids from the blood.
September 7, 2025 at 2:58 AM
13. Which organ is responsible for removing waste from the blood?
A) Heart
B) Liver
C) Kidneys
D) Brain
✅ Answer: C) Kidneys
📖 Explanation: Kidneys filter waste products and excess fluids from the blood.
A) Heart
B) Liver
C) Kidneys
D) Brain
✅ Answer: C) Kidneys
📖 Explanation: Kidneys filter waste products and excess fluids from the blood.
12. What is the unit of electric current?
A) Volt
B) Ampere
C) Ohm
D) Watt
✅ Answer: B) Ampere
📖 Explanation: Electric current is measured in amperes (A).
A) Volt
B) Ampere
C) Ohm
D) Watt
✅ Answer: B) Ampere
📖 Explanation: Electric current is measured in amperes (A).
September 7, 2025 at 2:57 AM
12. What is the unit of electric current?
A) Volt
B) Ampere
C) Ohm
D) Watt
✅ Answer: B) Ampere
📖 Explanation: Electric current is measured in amperes (A).
A) Volt
B) Ampere
C) Ohm
D) Watt
✅ Answer: B) Ampere
📖 Explanation: Electric current is measured in amperes (A).
11. What is the boiling point of water at sea level?
A) 50°C
B) 75°C
C) 100°C
D) 150°C
✅ Answer: C) 100°C
📖 Explanation: Water boils at 100°C at standard atmospheric pressure.
A) 50°C
B) 75°C
C) 100°C
D) 150°C
✅ Answer: C) 100°C
📖 Explanation: Water boils at 100°C at standard atmospheric pressure.
September 7, 2025 at 2:57 AM
11. What is the boiling point of water at sea level?
A) 50°C
B) 75°C
C) 100°C
D) 150°C
✅ Answer: C) 100°C
📖 Explanation: Water boils at 100°C at standard atmospheric pressure.
A) 50°C
B) 75°C
C) 100°C
D) 150°C
✅ Answer: C) 100°C
📖 Explanation: Water boils at 100°C at standard atmospheric pressure.
10. Which gas do plants absorb for photosynthesis?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Helium
✅ Answer: B) Carbon dioxide
📖 Explanation: Plants absorb carbon dioxide from the air for photosynthesis.
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Helium
✅ Answer: B) Carbon dioxide
📖 Explanation: Plants absorb carbon dioxide from the air for photosynthesis.
September 7, 2025 at 2:56 AM
10. Which gas do plants absorb for photosynthesis?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Helium
✅ Answer: B) Carbon dioxide
📖 Explanation: Plants absorb carbon dioxide from the air for photosynthesis.
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Helium
✅ Answer: B) Carbon dioxide
📖 Explanation: Plants absorb carbon dioxide from the air for photosynthesis.
9. What is the speed of light?
A) 3 x 10⁸ m/s
B) 3 x 10⁶ m/s
C) 3 x 10⁴ m/s
D) 3 x 10² m/s
✅ Answer: A) 3 x 10⁸ m/s
📖 Explanation: The speed of light in a vacuum is approximately 300,000 kilometers per second.
A) 3 x 10⁸ m/s
B) 3 x 10⁶ m/s
C) 3 x 10⁴ m/s
D) 3 x 10² m/s
✅ Answer: A) 3 x 10⁸ m/s
📖 Explanation: The speed of light in a vacuum is approximately 300,000 kilometers per second.
September 7, 2025 at 2:56 AM
9. What is the speed of light?
A) 3 x 10⁸ m/s
B) 3 x 10⁶ m/s
C) 3 x 10⁴ m/s
D) 3 x 10² m/s
✅ Answer: A) 3 x 10⁸ m/s
📖 Explanation: The speed of light in a vacuum is approximately 300,000 kilometers per second.
A) 3 x 10⁸ m/s
B) 3 x 10⁶ m/s
C) 3 x 10⁴ m/s
D) 3 x 10² m/s
✅ Answer: A) 3 x 10⁸ m/s
📖 Explanation: The speed of light in a vacuum is approximately 300,000 kilometers per second.
8. Which vitamin helps in blood clotting?
A) Vitamin A
B) Vitamin C
C) Vitamin D
D) Vitamin K
✅ Answer: D) Vitamin K
📖 Explanation: Vitamin K is essential for the synthesis of proteins needed for blood clotting.
A) Vitamin A
B) Vitamin C
C) Vitamin D
D) Vitamin K
✅ Answer: D) Vitamin K
📖 Explanation: Vitamin K is essential for the synthesis of proteins needed for blood clotting.
September 7, 2025 at 2:56 AM
8. Which vitamin helps in blood clotting?
A) Vitamin A
B) Vitamin C
C) Vitamin D
D) Vitamin K
✅ Answer: D) Vitamin K
📖 Explanation: Vitamin K is essential for the synthesis of proteins needed for blood clotting.
A) Vitamin A
B) Vitamin C
C) Vitamin D
D) Vitamin K
✅ Answer: D) Vitamin K
📖 Explanation: Vitamin K is essential for the synthesis of proteins needed for blood clotting.
7. What part of the plant conducts photosynthesis?
A) Roots
B) Stem
C) Leaves
D) Flowers
✅ Answer: C) Leaves
📖 Explanation: Leaves contain chlorophyll, which captures sunlight for photosynthesis.
A) Roots
B) Stem
C) Leaves
D) Flowers
✅ Answer: C) Leaves
📖 Explanation: Leaves contain chlorophyll, which captures sunlight for photosynthesis.
September 7, 2025 at 2:55 AM
7. What part of the plant conducts photosynthesis?
A) Roots
B) Stem
C) Leaves
D) Flowers
✅ Answer: C) Leaves
📖 Explanation: Leaves contain chlorophyll, which captures sunlight for photosynthesis.
A) Roots
B) Stem
C) Leaves
D) Flowers
✅ Answer: C) Leaves
📖 Explanation: Leaves contain chlorophyll, which captures sunlight for photosynthesis.
6. What type of simple machine is a seesaw?
A) Pulley
B) Lever
C) Inclined plane
D) Screw
✅ Answer: B) Lever
📖 Explanation: A seesaw is a type of lever where a beam pivots on a fulcrum.
A) Pulley
B) Lever
C) Inclined plane
D) Screw
✅ Answer: B) Lever
📖 Explanation: A seesaw is a type of lever where a beam pivots on a fulcrum.
September 7, 2025 at 2:55 AM
6. What type of simple machine is a seesaw?
A) Pulley
B) Lever
C) Inclined plane
D) Screw
✅ Answer: B) Lever
📖 Explanation: A seesaw is a type of lever where a beam pivots on a fulcrum.
A) Pulley
B) Lever
C) Inclined plane
D) Screw
✅ Answer: B) Lever
📖 Explanation: A seesaw is a type of lever where a beam pivots on a fulcrum.
5. What is the primary gas found in the Earth's atmosphere?
A) Oxygen
B) Hydrogen
C) Nitrogen
D) Carbon dioxide
✅ Answer: C) Nitrogen
📖 Explanation: Nitrogen makes up about 78% of Earth's atmosphere.
A) Oxygen
B) Hydrogen
C) Nitrogen
D) Carbon dioxide
✅ Answer: C) Nitrogen
📖 Explanation: Nitrogen makes up about 78% of Earth's atmosphere.
September 7, 2025 at 2:54 AM
5. What is the primary gas found in the Earth's atmosphere?
A) Oxygen
B) Hydrogen
C) Nitrogen
D) Carbon dioxide
✅ Answer: C) Nitrogen
📖 Explanation: Nitrogen makes up about 78% of Earth's atmosphere.
A) Oxygen
B) Hydrogen
C) Nitrogen
D) Carbon dioxide
✅ Answer: C) Nitrogen
📖 Explanation: Nitrogen makes up about 78% of Earth's atmosphere.
4. Which planet is known as the Red Planet?
A) Mercury
B) Mars
C) Jupiter
D) Venus
✅ Answer: B) Mars
📖 Explanation: Mars appears red due to iron oxide (rust) on its surface.
A) Mercury
B) Mars
C) Jupiter
D) Venus
✅ Answer: B) Mars
📖 Explanation: Mars appears red due to iron oxide (rust) on its surface.
September 7, 2025 at 2:54 AM
4. Which planet is known as the Red Planet?
A) Mercury
B) Mars
C) Jupiter
D) Venus
✅ Answer: B) Mars
📖 Explanation: Mars appears red due to iron oxide (rust) on its surface.
A) Mercury
B) Mars
C) Jupiter
D) Venus
✅ Answer: B) Mars
📖 Explanation: Mars appears red due to iron oxide (rust) on its surface.
3. Which organ in the human body pumps blood?
A) Brain
B) Liver
C) Kidney
D) Heart
✅ Answer: D) Heart
📖 Explanation: The heart is responsible for pumping blood throughout the body.
A) Brain
B) Liver
C) Kidney
D) Heart
✅ Answer: D) Heart
📖 Explanation: The heart is responsible for pumping blood throughout the body.
September 7, 2025 at 2:53 AM
3. Which organ in the human body pumps blood?
A) Brain
B) Liver
C) Kidney
D) Heart
✅ Answer: D) Heart
📖 Explanation: The heart is responsible for pumping blood throughout the body.
A) Brain
B) Liver
C) Kidney
D) Heart
✅ Answer: D) Heart
📖 Explanation: The heart is responsible for pumping blood throughout the body.
2. What force keeps planets in orbit around the sun?
A) Magnetism
B) Friction
C) Gravity
D) Nuclear force
✅ Answer: C) Gravity
📖 Explanation: Gravity is the force that pulls planets toward the sun and keeps them in orbit.
A) Magnetism
B) Friction
C) Gravity
D) Nuclear force
✅ Answer: C) Gravity
📖 Explanation: Gravity is the force that pulls planets toward the sun and keeps them in orbit.
September 7, 2025 at 2:53 AM
2. What force keeps planets in orbit around the sun?
A) Magnetism
B) Friction
C) Gravity
D) Nuclear force
✅ Answer: C) Gravity
📖 Explanation: Gravity is the force that pulls planets toward the sun and keeps them in orbit.
A) Magnetism
B) Friction
C) Gravity
D) Nuclear force
✅ Answer: C) Gravity
📖 Explanation: Gravity is the force that pulls planets toward the sun and keeps them in orbit.
1. What is the chemical symbol for water?
A) H₂O
B) O₂
C) CO₂
D) NaCl
✅ Answer: A) H₂O
📖 Explanation: Water is made of two hydrogen atoms and one oxygen atom, hence H₂O.
A) H₂O
B) O₂
C) CO₂
D) NaCl
✅ Answer: A) H₂O
📖 Explanation: Water is made of two hydrogen atoms and one oxygen atom, hence H₂O.
September 7, 2025 at 2:52 AM
1. What is the chemical symbol for water?
A) H₂O
B) O₂
C) CO₂
D) NaCl
✅ Answer: A) H₂O
📖 Explanation: Water is made of two hydrogen atoms and one oxygen atom, hence H₂O.
A) H₂O
B) O₂
C) CO₂
D) NaCl
✅ Answer: A) H₂O
📖 Explanation: Water is made of two hydrogen atoms and one oxygen atom, hence H₂O.