Computer Quiz For Class 3 With Answers

This icon represents the "Recycle bin" on the computer. The recycle bin is a storage area where deleted files and folders are temporarily stored before they are permanently deleted from the system. It allows users to recover accidentally deleted files or restore files that were deleted by mistake. The icon typically resembles a trash bin or recycling bin, indicating that it is the place where deleted items go before they are discarded.

The correct answer is "Machine" because a computer is a device that can perform various tasks by executing a set of instructions or programs. It is a combination of hardware components such as a processor, memory, and input/output devices that work together to process data and perform calculations. While a computer can access the internet and display content on a TV, these options are not the primary function of a computer. Therefore, the most accurate description of a computer is a machine.

MS Paint is a basic drawing program that cannot have the capability to run or support games. It is primarily used for creating simple drawings or editing images. Therefore, it is not possible to play games on MS Paint.

Computers are commonly used in airports for various purposes, including booking tickets. They provide a convenient and efficient way for passengers to search for flights, select seats, and make reservations. Additionally, computers are also used by airport staff to manage and track flight schedules, handle check-ins, and issue boarding passes. Therefore, it is true that computers are used to book tickets in airports.

The given options represent different elements or components that are commonly found in a software application or program. Among these options, the "Drawing area" is the most suitable answer as it refers to the specific area or space within the software where users can create or draw objects, images, or designs. The other options such as "Ribbon," "Home tab," and "Toolbox" are also common elements in software applications, but they do not specifically indicate the area where drawing or creation takes place.

A UPS (Uninterruptible Power Supply) is a device that provides backup power to a computer or other electronic devices when the main power supply is interrupted. It ensures that the computer can continue to work for a period of time, typically long enough to save any unsaved work and safely shut down the system.

The statement is true because ALU stands for Arithmetic Logic Unit. The ALU is a crucial component of a computer's central processing unit (CPU) that performs arithmetic and logical operations on data. It is responsible for executing mathematical calculations, such as addition, subtraction, multiplication, and division, as well as logical operations like AND, OR, and NOT. Therefore, the correct answer is true.

Hardware refers to the physical components of a computer that can be touched and interacted with, such as the monitor, keyboard, mouse, and CPU. This is in contrast to software, which refers to the programs and instructions that run on the computer. Therefore, the statement that the parts of the computer that can be touched are called hardware is true.

Pressing the left mouse button twice in quick succession is commonly referred to as a double click. This action is often used to perform certain functions or commands on a computer, such as opening a file or selecting a word. It is a standard feature in most operating systems and software applications.

The backspace key is used to erase the letter "P" in this scenario. When we press the backspace key, it deletes the character before the cursor, which in this case is the letter "P". The spacebar is used to insert a space, the enter key is used to create a new line or execute a command, and the delete key is used to remove the character after the cursor. Therefore, the correct option to erase the letter "P" is the backspace key.

The correct answer is a scanner. Based on the given options, a scanner is the most suitable choice as it is a device used to convert physical documents or images into digital format. A printer is a device used to produce hard copies of digital documents, a fax machine is used to transmit documents over a telephone line, and a reader is a more generic term that could refer to various devices.

The given statement is incorrect. A speaker is not an input device but an output device. It is used to produce sound or audio output. Input devices are used to provide input or send information to a computer system, while output devices are used to receive output or display information from a computer system.

The correct answer is "Control Unit." C.U. typically stands for Control Unit in the context of computer systems. The Control Unit is responsible for directing and coordinating the activities of all the other hardware components in a computer. It manages the execution of instructions, controls data flow, and ensures that all operations are carried out in the correct sequence.

The given correct answer is "an input device." An input device is a hardware device that allows users to input data or commands into a computer. Examples of input devices include keyboards, mice, scanners, and microphones. These devices enable users to interact with the computer and provide it with the necessary information to perform tasks. Therefore, an input device is the most appropriate explanation for the given options.

To erase the letter "U," we need to press the Delete key. The Delete key is specifically designed to remove characters that are to the right of the cursor position. Pressing the Delete key will delete the character at the cursor's position and shift the remaining characters to the left. This action effectively erases the letter "U" from the text. The Enter key is used to create a new line or execute a command, the Tab key is used to move the cursor to the next tab stop, and the Backspace key is used to delete the character to the left of the cursor.

The correct answer is "Fill a picture with color". This tool is commonly used in graphic design software or image editing programs to apply a specific color to an area or shape within a picture. It allows the user to easily fill in large areas or complex shapes with a chosen color, enhancing the overall appearance of the image.

The correct answer includes the devices that are used for outputting information. A speaker is an output device that produces sound, while a monitor displays visual output. A printer also falls under the category of an output device as it produces physical copies of documents. Therefore, the answer includes the devices that fulfill the criteria of being output devices.