Bricks MCQ with answer and solution

Concept

A frog is a depression or indentation made on the top face of a brick. It provides a key for the mortar so that bricks stick together firmly.

Step-by-step solution

1. Identify the purpose of making an indentation on a brick surface. 2. An indentation on the top face of a brick holds mortar to form a strong joint. 3. This depression or indentation is called a 'frog'. Answer: (C) Frog

Explanation

A frog is a depression made on the top face of a brick during molding. It acts as a mechanical key to hold the mortar tightly. It also carries the manufacturer's name.

Why the other options are wrong

A: Bond is the arrangement of bricks laid in mortar. B: Course is a single horizontal layer of bricks. D: Quoins are the corner bricks or stones at the edge of a wall.

Shortcut

Indentation on top of a brick is always called a frog.

Common mistake

Students often confuse quoins (corner bricks) with frogs.