Exam: Cambridge English: C1 Advanced (CAE)

Definition: A very small tube made of carbon atoms arranged in a cylindrical shape, known for its strength and electrical properties.

Example: Researchers are studying the use of nanotubes in electronics and materials science.

Definition: A white solid substance made from coal tar or petroleum, often used to make dyes, moth repellents, and explosives.

Example: The mothballs in the closet contained naphthalene to keep the insects away.

Definition: Relating to a type of hydrocarbon compound known as naphthenes, which are typically found in crude oil and are characterized by their ring structure.

Example: The naphthenic acids in the oil can cause corrosion in pipelines.

Definition: A type of organic compound that is derived from naphthalene and has a hydroxyl group, existing in two forms known as alpha-naphthol and beta-naphthol.

Example: Alpha-naphthol is often used in the production of dyes and as an antiseptic.

Definition: A type of chemical radical that comes from naphthalene, created by removing one hydrogen atom. There are two forms of this radical, known as isomers.

Example: The chemist used naphthyl in the synthesis of new compounds.

Definition: A type of chemical compound that is a primary amine derived from naphthalene, often used in making dyes and other chemical products.

Example: Naphthylamine is commonly used in the production of various dyes.

Definition: A mental condition where a person has an excessive interest in or admiration of themselves, often leading to a lack of concern for others.

Example: Her narcissism made it difficult for her to maintain friendships because she only focused on her own needs.

Definition: Related to a condition that causes people to suddenly fall asleep during the day.

Example: He was diagnosed as narcoleptic after experiencing sudden sleep attacks.

Definition: A person who experiences sudden and uncontrollable episodes of sleep during the day.

Example: The narcoleptic often struggles to stay awake during meetings.

Definition: To make someone or something less aware or responsive by using a drug that causes sleep or reduces pain.

Example: The doctor decided to narcotize the patient before the surgery to ensure they felt no pain.

Definition: Causing a state of unconsciousness or a lack of awareness, often similar to the effects of drugs.

Example: The narcotizing effects of the medication made him feel drowsy and detached from reality.