- What is the primary component of white phosphorus?
a) Phosphorus hexachloride
b) Phosphorus pentoxide
c) Phosphorus trichloride
d) Phosphorus pentasulfide
Correct Answer: b) Phosphorus pentoxide
2. Which element is used to moderate nuclear reactions in a nuclear reactor?
a) Uranium
b) Thorium
c) Neptunium
d) Graphite
Correct Answer: d) Graphite
3. What is the chemical formula of common table salt?
a) NaCl2
b) Na2SO4
c) NaCl
d) Na2CO3
Correct Answer: c) NaCl
4. Which gas is responsible for the green color in fireworks displays?
a) Oxygen
b) Helium
c) Nitrogen
d) Barium
Correct Answer: d) Barium
5. What is the molecular formula of ozone?
a) O2
b) O3
c) O4
d) O5
Correct Answer: b) O3
6. Which metal is commonly used as a catalyst in the Haber-Bosch process to produce ammonia?
a) Iron
b) Copper
c) Silver
d) Platinum
Correct Answer: a) Iron
7. What is the chemical formula for vinegar?
a) H2O
b) CH3OH
c) H2O2
d) CH3COOH
Correct Answer: d) CH3COOH
8. Which of the following elements is a noble gas?
a) Nitrogen
b) Neon
c) Sodium
d) Sulfur
Correct Answer: b) Neon
9. Which law states that the pressure of a gas is inversely proportional to its volume, at constant temperature and amount of gas?
a) Boyle’s Law
b) Charles’s Law
c) Avogadro’s Law
d) Gay-Lussac’s Law
Correct Answer: a) Boyle’s Law
11. What is the main component of natural gas?
a) Methane
b) Ethane
c) Propane
d) Butane
Correct Answer: a) Methane