Computer Quiz For Class 3 With Answers

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Godwin Iheuwa, MS, Computer Science |
Computer Expert
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Gowdin, a Computer Science Master's graduate, is your go-to expert for all things computing. With a passion for troubleshooting, coding, and offering valuable tech insights, Gowdin ensures your digital journey is seamless and efficient. Count on Gowdin to provide the support and knowledge you need.
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Computer Quiz For Class 3 With Answers - Quiz

Is computer your favorite subject? Let's see how much do you really know about this interesting course. Just answer a few simple questions from this quiz and test your knowledge. Please note that this quiz is designed for grade 3 computer science students.
All the best!


Questions and Answers
  • 1. 

    Computer is a _____________ 

    • A.

      Program

    • B.

      Machine

    • C.

      TV

    • D.

      Internet

    Correct Answer
    B. Machine
    Explanation
    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.

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  • 2. 

    C.U. means 

    • A.

      Central Unit

    • B.

      Control Unit

    • C.

      Center United

    • D.

      Central Processing Unit

    Correct Answer
    B. Control Unit
    Explanation
    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.

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  • 3. 

    The parts of the computer that can be touched are called HARDWARE.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    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.

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  • 4. 

    ALU stands for Arithmetic Logic Unit 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    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.

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  • 5. 

    We can play games on MS Paint.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    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.

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  • 6. 

    Speaker is an input device

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    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.

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  • 7. 

    This is 

    • A.

      An output device

    • B.

      An input device

    • C.

      A storage device

    • D.

      A processing unit

    Correct Answer
    B. An input device
    Explanation
    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.

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  • 8. 

    What's in the picture?

    • A.

      A printer

    • B.

      A scanner

    • C.

      A fax machine

    • D.

      A reader

    Correct Answer
    B. A scanner
    Explanation
    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.

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  • 9. 

    What is this icon?

    • A.

      My computer

    • B.

      My documents

    • C.

      Recycle bin

    • D.

      Network

    Correct Answer
    C. Recycle bin
    Explanation
    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.

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  • 10. 

    This tool is used to 

    • A.

      Erase a color

    • B.

      Fill a picture with color

    • C.

      Draw pictures

    • D.

      Magnify the drawing area

    Correct Answer
    B. Fill a picture with color
    Explanation
    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.

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  • 11. 

    To erase the letter ''P'' we must press the ____________ on the keyboard. 

    • A.

      Spacebar

    • B.

      Enter key

    • C.

      Backspace key

    • D.

      Esc Key

    Correct Answer
    C. Backspace key
    Explanation
    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.

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  • 12. 

    To erase the letter ''U'' we must press the R

    • A.

      Enter key

    • B.

      Tab key

    • C.

      Delete key

    • D.

      Backspace key

    Correct Answer
    C. Delete key
    Explanation
    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.

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  • 13. 

    Select only OUTPUT devices

    • A.

      Mouse

    • B.

      Speaker

    • C.

      Monitor

    • D.

      Keyboard

    • E.

      Printer

    • F.

      Microphone

    Correct Answer(s)
    B. Speaker
    C. Monitor
    E. Printer
    Explanation
    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.

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  • 14. 

    Pressing the left mouse button twice is called a double click.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    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.

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  • 15. 

    This is 

    • A.

      Ribbon

    • B.

      Drawing area

    • C.

      Home tab

    • D.

      Tool box

    Correct Answer
    B. Drawing area
    Explanation
    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.

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  • 16. 

    This device makes the computer work for some time when power supply goes off. What is the name of this device?

    • A.

      Printer

    • B.

      FAX machine

    • C.

      U.P.S.

    • D.

      Scanner

    Correct Answer
    C. U.P.S.
    Explanation
    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.

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  • 17. 

    In airports, computers are used to book tickets.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    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.

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Godwin Iheuwa |MS, Computer Science |
Computer Expert
Gowdin, a Computer Science Master's graduate, is your go-to expert for all things computing. With a passion for troubleshooting, coding, and offering valuable tech insights, Gowdin ensures your digital journey is seamless and efficient. Count on Gowdin to provide the support and knowledge you need.
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