Forensic Science: Identifying Organic Compounds

What is the primary purpose of pyrolysis in forensic science?

• To analyze the smell of a compound

• To measure the weight of a sample

• To determine if a substance is organic or inorganic

• To identify the color of a substance

Which reaction is used to distinguish alkanes from alkenes?

• Reaction with sodium hydroxide

• Reaction with hydrochloric acid

• Reaction with bromine water

• Reaction with sulfuric acid

What is a characteristic feature of aromatic compounds?

• They have a sweet aroma

• They contain a benzene ring

• They are highly reactive with bromine

• They are always colorless

How can alcohols be distinguished from other organic compounds?

• By their ability to dissolve in water

• By their sweet aroma

• By their color change in litmus paper

• By their reaction with sodium metal

What is the functional group present in carboxylic acids?

• Carboxyl group

• Carbonyl group

• Hydroxyl group

• Amino group

Which test can be used to identify an ester?

• Color change with litmus paper

• Presence of a sweet aroma

• Reaction with sodium metal

• Reaction with bromine water

What is a key method to distinguish between acids and bases?

• Measuring the boiling point

• Using pH indicators

• Checking solubility in water

• Using a thermometer

What reaction indicates the presence of a base?

• Formation of bubbles with carbonate

• Color change with bromine water

• Sweet aroma

• Reaction with sodium metal

Which technique uses infrared light to analyze organic compounds?

• Mass spectrometry

• Nuclear magnetic resonance

• Infrared spectroscopy

• Chromatography

What does mass spectrometry analyze in a molecule?

• The solubility of the molecule

• The color of the molecule

• The fragments after breaking the molecule

• The boiling point of the molecule