Exam: IELTS

Definition: A strong feeling of disappointment or embarrassment, often because something did not go as expected.

Example: To his chagrin, he realized he had forgotten his best friend's birthday.

Definition: To make someone feel embarrassed or disappointed about something.

Example: She was chagrined when she realized she had forgotten her friend's birthday.

Definition: A series of connected links, usually made of metal, used for holding things together or for mechanical purposes.

Example: He used a chain to secure the bike to the fence.

Definition: To fasten or secure something using a chain, often to restrict movement or keep it in place.

Example: The owner chained the bicycle to the rack to prevent it from being stolen.

Definition: The act of linking things together in a series or sequence.

Example: The chaining of events led to a surprising outcome.

Definition: To connect or link things together in a series or sequence.

Example: The children were chaining the colorful blocks to build a tower.

Definition: A person who leads a meeting or organization, often responsible for making decisions and guiding discussions.

Example: The chairperson called the meeting to order and introduced the agenda.

Definition: A woman who leads or presides over a meeting, committee, or organization.

Example: The chairwoman called the meeting to order and welcomed everyone.

Definition: A type of element found in group 16 of the periodic table, which includes oxygen, sulfur, selenium, tellurium, and polonium.

Example: Oxygen is a well-known chalcogen that is essential for life.

Definition: A type of chemical compound that consists of a chalcogen element combined with a more electropositive element, typically forming a binary compound.

Example: The researchers studied various chalcogenides for their potential use in solar cells.

Definition: A yellow mineral made of copper and iron sulfide, which is a significant source of copper.

Example: Chalcopyrite is often found in copper mines as a valuable ore.

Definition: A flat, smooth surface, often black or green, used for writing on with chalk, commonly found in classrooms.

Example: The teacher wrote the math problems on the chalkboard for the students to see.

Definition: To question or dispute something, often in a way that invites a response or action.

Example: She decided to challenge the decision made by the committee.

Definition: A situation or task that tests someone's abilities or skills, often requiring effort and determination to overcome.

Example: Climbing the mountain was a real challenge for the team.

Definition: To invite someone to compete or to question something in a way that shows you are not afraid or that you want to test their ability.

Example: She decided to challenge her friend to a race.