HEC LAT 2026 Science Free Quiz 1

1. What is the chemical formula for water?

A. H2O B. CO2 C. NaCl D. HCl

2. What is the approximate speed of light?

A. 300,000 km/s B. 299,792 km/s C. 299,792,458 m/s D. 300,000,000 m/s

3. Which planet is closest to the Sun?

A. Venus B. Mercury C. Earth D. Mars

4. What is the largest organ in the human body?

A. Liver B. Brain C. Heart D. Skin

5. What percentage of Earth's atmosphere is oxygen?

A. 21% B. 78% C. 1% D. 0.04%

6. Who proposed the theory of relativity?

A. Isaac Newton B. Galileo Galilei C. Albert Einstein D. Stephen Hawking

7. At what temperature does water boil at sea level?

A. 90°C B. 100°C C. 110°C D. 120°C

8. Who discovered the structure of DNA?

A. Watson and Crick B. Mendel and Darwin C. Einstein and Bohr D. Franklin and Wilkins

9. How many natural satellites does Earth have?

A. 2 B. 3 C. 1 D. 0

10. What is the range of the pH scale?

A. 0-10 B. 1-12 C. 0-14 D. 0-14