Chemistry General Knowledge
1. What is the chemical symbol for water?
a) H2
b) O2
c) CO2
d) H2O
Answer: d) H2O
2. What is the atomic number of carbon?
a) 6
b) 8
c) 12
d) 14
Answer: a) 6
3. Which element is known as the "King of Chemicals"?
a) Oxygen
b) Sulfuric acid
c) Sodium
d) Nitrogen
Answer: b) Sulfuric acid
4. What is the most abundant gas in Earth's atmosphere?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen
Answer: c) Nitrogen
5. What is the pH of a neutral solution?
a) 0
b) 7
c) 14
d) 10
Answer: b) 7
6. Which of the following is an alkali metal?
a) Calcium
b) Potassium
c) Iron
d) Carbon
Answer: b) Potassium
7. What is the chemical formula for table salt?
a) NaCl
b) KCl
c) NaNO3
d) KNO3
Answer: a) NaCl
8. Who is known as the "Father of Modern Chemistry"?
a) Isaac Newton
b) Albert Einstein
c) Antoine Lavoisier
d) Dmitri Mendeleev
Answer: c) Antoine Lavoisier
9. Which acid is commonly found in vinegar?
a) Hydrochloric acid
b) Acetic acid
c) Citric acid
d) Sulfuric acid
Answer: b) Acetic acid
10. What is the main component of natural gas?
a) Ethane
b) Methane
c) Propane
d) Butane
Answer: b) Methane
General science GK
11. What is the periodic table symbol for gold?
a) Au
b) Ag
c) Gd
d) Ge
Answer: a) Au
12. Which of the following is an example of a noble gas?
a) Oxygen
b) Nitrogen
c) Helium
d) Hydrogen
Answer: c) Helium
13. What is the chemical formula for ammonia?
a) NH3
b) HNO3
c) NO2
d) N2O
Answer: a) NH3
14. What is the process of converting a liquid into a gas called?
a) Condensation
b) Evaporation
c) Sublimation
d) Deposition
Answer: b) Evaporation
15. Which element is a liquid at room temperature?
a) Hydrogen
b) Mercury
c) Carbon
d) Sodium
Answer: b) Mercury
16. What is the term for a substance that speeds up a chemical reaction without being consumed?
a) Reactant
b) Product
c) Catalyst
d) Inhibitor
Answer: c) Catalyst
17. What is the formula for calculating the number of moles?
a) Moles = Mass / Volume
b) Moles = Mass / Molar Mass
c) Moles = Volume / Molar Volume
d) Moles = Pressure / Temperature
Answer: b) Moles = Mass / Molar Mass
18. Which of the following is not an organic compound?
a) Methane
b) Glucose
c) Sodium chloride
d) Ethanol
Answer: c) Sodium chloride
19. What is the common name for sodium bicarbonate?
a) Baking powder
b) Baking soda
c) Washing soda
d) Bleach
Answer: b) Baking soda
20. Which gas is known as "laughing gas"?
a) Nitrogen dioxide
b) Nitrous oxide
c) Carbon monoxide
d) Oxygen
Answer: b) Nitrous oxide
General science GK
21. What is the primary component of limestone?
a) Calcium sulfate
b) Calcium carbonate
c) Magnesium carbonate
d) Sodium bicarbonate
Answer: b) Calcium carbonate
22. What is the main use of chlorine in water treatment?
a) To remove sediments
b) To kill bacteria
c) To adjust pH levels
d) To add flavor
Answer: b) To kill bacteria
23. What type of bond is formed between two non-metals?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
Answer: b) Covalent bond
24. What is the name of the process by which plants produce glucose?
a) Respiration
b) Fermentation
c) Photosynthesis
d) Combustion
Answer: c) Photosynthesis
25. Which of the following is a chemical change?
a) Melting of ice
b) Boiling of water
c) Rusting of iron
d) Dissolving sugar in water
Answer: c) Rusting of iron
General science GK
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