1. Which of the following is an example of an organic substance?
a) Sodium chloride
b) Methane
c) Calcium carbonate
d) Sulfur dioxide
Answer: b) Methane
2. Which of the following is an example of an inorganic substance?
a) Glucose
b) Ethanol
c) Sodium chloride
d) Urea
Answer: c) Sodium chloride
3. What is the primary characteristic that distinguishes organic compounds from inorganic compounds?
a) Presence of nitrogen
b) Presence of carbon
c) Presence of oxygen
d) Presence of hydrogen
Answer: b) Presence of carbon
4. Which of the following compounds contains both carbon and hydrogen atoms?
a) Sodium chloride
b) Methane
c) Potassium bromide
d) Calcium sulfate
Answer: b) Methane
5. What is the general formula for alkanes, a type of organic compound?
a) CₙH₂ₙ₊₂
b) CₙH₂ₙ₊₁
c) CₙH₂ₙ
d) CₙHₙ
Answer: a) CₙH₂ₙ₊₂
6. Which of the following is a common property of inorganic acids?
a) They usually contain carbon
b) They are generally strong electrolytes
c) They are usually organic compounds
d) They do not dissociate in water
Answer: b) They are generally strong electrolytes
7. What type of bond is most commonly found in organic compounds?
a) Ionic bond
b) Covalent bond
c) Metallic bond
d) Hydrogen bond
Answer: b) Covalent bond
8. Which of the following is an example of an inorganic acid?
a) Acetic acid
b) Citric acid
c) Hydrochloric acid
d) Lactic acid
Answer: c) Hydrochloric acid
9. Which of the following is an example of an organic base?
a) Sodium hydroxide
b) Ammonia
c) Calcium hydroxide
d) Potassium hydroxide
Answer: b) Ammonia
10. What type of reaction is typically involved in the formation of organic compounds?
a) Oxidation
b) Combustion
c) Polymerization
d) Neutralization
Answer: c) Polymerization
11. Which of the following substances is commonly used in fertilizers and is inorganic?
a) Urea
b) Potassium chloride
c) Ammonium nitrate
d) All of the above
Answer: d) All of the above
12. Which type of organic compound is known for its ability to form multiple bonds between carbon atoms?
a) Alkanes
b) Alkenes
c) Alkynes
d) All of the above
Answer: d) All of the above
13. Which of the following substances is known as a common organic solvent?
a) Water
b) Sodium hydroxide
c) Benzene
d) Sulfuric acid
Answer: c) Benzene
14. Which organic compound is essential for the energy storage in plants?
a) Cellulose
b) Starch
c) Glucose
d) Chitin
Answer: b) Starch
15. Which of the following is true about inorganic compounds?
a) They generally do not contain carbon atoms
b) They are only found in natural sources
c) They always have a high molecular weight
d) They are usually found in organic life forms
Answer: a) They generally do not contain carbon atoms