Questions

A computer system consists of a computer case, a power supply unit, a motherboard, a central processing unit (CPU), main memory, and a hard disk drive.

Input devices include a keyboard, mouse, microphone, video camera, and image scanner.

Output devices include a monitor, speakers, and a printer.

A vector quantity is a quantity which has both magnitude and direction. Here in the given options, speed is a scalar quantity but not the vector quantity.

To hold something in leash means to control and ‘to restrain’ also means to control

The phrase ‘could not be able’ needs to be replaced with ‘was not able’ to make the sentence correct. As the action has already taken place so use of modal is incorrect. Thus, the correct sentence would be, ‘She told her teacher that she was not able to attend the class the previous day because of heavy rains’.

A bull in a china shop means one who is aggressive and clumsy in a situation that requires delicacy and care.