1. Atomic number equals?
A) Neutrons
B) Protons
C) Electrons
D) Nucleons
Answer: B) Protons
2. Rust is?
A) Iron oxide
B) Iron sulphide
C) Copper oxide
D) Silver oxide
Answer: A) Iron oxide
3. Milk rich in?
A) Iron
B) Calcium
C) Sodium
D) Potassium
Answer: B) Calcium
4. Speed of light?
A) 3×10⁶ m/s
B) 3×10⁷ m/s
C) 3×10⁸ m/s
D) 3×10⁹ m/s
Answer: C) 3×10⁸ m/s
5. Earth shape?
A) Sphere
B) Geoid
C) Ellipsoid
D) Cylinder
Answer: B) Geoid
6. SI unit of charge?
A) Volt
B) Coulomb
C) Ohm
D) Ampere
Answer: B) Coulomb
7. Food storage in plants?
A) Leaves
B) Roots/Tubers
C) Flowers
D) Seeds
Answer: B) Roots/Tubers
8. Hottest planet?
A) Mercury
B) Venus
C) Earth
D) Mars
Answer: B) Venus
9. Boiling water becomes?
A) Liquid
B) Gas
C) Solid
D) Plasma
Answer: B) Gas
10. Air is mostly?
A) Oxygen
B) Nitrogen
C) CO₂
D) Helium
Answer: B) Nitrogen
