Punjab School Education Board

Class 7 Computer Science (2025-26)

Dear students. In this article, you can practice of all the lessons of computer science of Class 7. You can note the exercise of these lessons by clicking on the links of the relevant lessons given below.

    Computer Science

    Class :- 7th

    Lesson – 1 Typing Tutor

    Multiple Choice Questions.

    1. To use the number pad, the ________ key should be on.

    a) Numlock b) Capslock c) Scrollock c) None

    2. In the home row, the ______ key is pressed with the smallest finger of the left hand.

    a) A        b) S        c) D       d) F

    3. In the home row, the ______ key is pressed with the middle finger of the right hand.

    a) J         b) K       c) L        d) ;

    4. In the second row, the _______ key is pressed with the ring finger of the left hand.

    a) Q       b) W      c) E        d) R

    5. In the third row, the _____ key is pressed with the index finger of the right hand.

    a) B        b) N,M c) A        d) ,

    Fill in the blanks.

    1. The keyboard is divided into ___ parts for typing.

    Answer:- Two

    2. The technique of typing without looking at the keyboard is called ___.

    Answer:- Touch typing

    3. While typing, the space bar is pressed with ___ finger.

    Answer:- Thumbs

    4. While typing, the ___ key is used to move to a new line.

    Answer:- Enter key

    Short answer questions

    Question:1. What is touch typing?

    Answer: Touch typing is a technique through which we can learn to type step by step with all the fingers without looking at the keyboard. If we keep looking for the keys on the keyboard while typing, then as a result our typing speed will be very fast.

    Question:2. Explain the position of the fingers on the home row.

    Answer: The home row is the key where the fingers rest, and from which typing begins.

    Position of the fingers (as per QWERTY keyboard)

    👉 Left hand:

    • Little finger – A

    • Ring finger – S

    • Middle finger – D

    • Index finger – F

    • Thumb – Space Bar

    👉 Right hand:

    • Index finger – J

    • Middle finger – K

    • Ring finger – L

    • Little finger – ;

    • Thumb – Space Bar

    During typing, the fingers remain on the home row and move from there to move to the other keys. This method improves the speed and accuracy of typing.

    Question:3. Which hand is used to type numbers from the numeric keypad? Explain the position of the fingers on the numeric keypad.

    Answer: The right hand should be used while typing numbers from the numeric keypad. The position of the fingers on the numeric keypad is as follows.

    1. The index finger is used to use the 1,4 and 7 keys.

    2. The middle finger is used to use the 2,5 and 8 keys.

    3. The ring finger is used to use the 3,6 and 9 keys.

    4. The little finger is used to use the Enter, ‘+’ and ‘-’ keys.

    5. The thumb is used to use the 0 key.

    Long answers Questions:-

    Question:1. Tell about the correct way to sit while typing.

    Answer: The correct way to sit while typing is as follows.

    1. We should sit completely straight and exactly in front of the keyboard.

    2. Our feet should be flat on the ground.

    3. The computer monitor should be level with and in front of our eyes.

    4. While typing, our eyes should be on the monitor or copy.

    5. Our fingers should be in a circle and on the home row keys.

    6. We should press each key quickly and come back to the home row.

    Question:2. Describe the following keys.

    1. Enter key 2. Backspace key 3. Shift key

    Answer:

    1. Enter key:- This key is used to move to a new line. To press the enter key, we use the smallest finger of our right hand.

    2. Backspace key:- This key is used to delete a character to the left of the cursor. We use the little finger of our right hand for this.

    3. Shift key:- This key is present on both sides of the keyboard. It is used to type capital letters of the English alphabet or the uppercase letter printed above a key. If you want to type a capital letter with your left hand, press the shift key with the little finger of your right hand and similarly if you want to type a capital letter with your right hand, then the little finger of your left hand is used.

     

    Lesson – 2 Windows Explorer

    Multiple Choice Questions.

    1. Windows Explorer has two panes: These are _______ and ______________

    a. First, second               b. Left, right     c. Top, bottom                 d. File, folder

    2. ________ view shows the size, type and modification date of the file.

    a. Details          b. Tiles                c. List                   d. Content

    3. __________ option is used to find files and folders.

    a. File                  b. Select             c. Search           d. Delete

    4. ____ A combination of pictures, colors and sounds etc. in our computer.

    a. Background b. Desktop          c. Screen saver d. Theme

    5. A _____ is a software program that runs automatically when the computer is not used for a certain period of time.

    a. Background b. Desktop         C. Screen saver             d. Theme

    Very Short answers Questions:-

    Question:1. Which application of Windows is used to organize files properly?

    Answer:- Windows Explorer

    Question:2. What do we call another folder created in a folder?

    Answer:- Sub-folder

    Question:3. Write the method to open Windows Explorer?

    Answer:- Press Windows key + O key together.

    Question:4. Write the name of any default library of Windows?

    Answer:- Documents, Music, Pictures, Videos.

    Question:5. Which option is used to create a duplicate of an item?

    Answer:- Copy option

    Fill in the blanks.

    1. The shortcut key to create a new folder is ____.

    Answer:- Ctrl+Shift+M

    2. The shortcut key to rename a file or folder is ___.

    Answer:- F2

    3. Deleted files and folders go to ___.

    Answer:- Recycle Bin

    4. ____ Our computer has a combination of images, colors and sounds etc.

    Answer:-Themes

    Short answer questions.

    Question:1. How many panes does Windows Explorer have? Write their names.

    Answer: Windows Explorer has two panes. These are:

    1. Left pane

    2. Right pane

    Question:2. Write the names of the different parts of Windows Explorer?

    Answer: The list of components of Windows Explorer is as follows:

    1. Title bar

    2. Back and forward buttons

    3. Address bar

    4. Search box

    5. Menu bar

    6. Tool bar

    7. Status bar

    Question:3. Define file and folder?

    Answer: File:- A file is a type of storage unit in a computer. It is defined as a group of related data or information stored in secondary storage.

    Folder:- Folder is used to organize files in a computer system. Folder is also called a directory. There can be multiple folders inside a folder.

    Long answer questions.

    Question:1. What is Windows Explorer? Write the steps to open Windows Explorer.

    Answer: Windows Explorer is also called File Explorer. It is an important application of the Windows operating system. It is used to view the drives, files and folders present in the computer.

    Steps to open Windows Explorer:

    1. Press Windows key + R button together.

    2. The Run box will open. Type explorer in it.

    3. Click on the OK button.

    Question: 2. Write the different views of Windows Explorer.

    Answer: There are many ways to view the files, folders and drives present in Windows Explorer. These different views are as follows.

    1. Small icon view

    2. Medium icon view

    3. Large icon view

    4. Extra large icon view

    5. Titles icon view

    6. List icon view

    7. Details icon view

    8. Content icon view

    Question: 3. Tell us about the options for customizing the desktop in Windows?

    Answer: Windows allows us to customize the appearance of our screen. In Windows 7, we can change the appearance of the screen with the help of the Personalization dialog box.

    Let's see how to apply these changes:-

    1. Right-click the mouse on an empty part of the desktop to open the Personalization menu.

    2. Click on the Personalization option with the help of the mouse.

    3. Apply the changes by selecting the options according to your requirement.

    Question:4. How can we copy an item using the Send To option?

    Answer: The Send To option is an easy way to copy items to a new location. The steps to copy an item using the Send To option are as follows:

    1. Select the item to be copied.

    2. Right-click on the selected item with the mouse.

    3. Click on the Copy option from the Properties menu.

    4. From the newly opened submenu, select the location where the item is to be copied.

    Question:5. Give information about screen saver?

    Answer: Screen saver is a software program, which runs automatically when the computer is not used for a certain period of time. Screen savers are animated images and screensavers were created to protect the phosphor coating of the computer monitor from burning.

    Steps to install a screen saver:-

    1. Right-click on any empty part of the desktop screen using the mouse.

    2. Click on the Personalization option to open the Personalization dialog box.

    3. Click the Screen Saver option in the Personalization dialog box.

    4. Select the screen saver of your choice.

    5. Click the Apply and OK buttons.

     

    Lesson – 3 MS Word Part 1

    Multiple Choice Questions.

    1.Ctrl+S is used for ______.

    A.Save                               B. Open              C. New                D. Close

    2. There is a large area at the bottom of the ruler, which is called ______.

    A.Text area        B. Open area     C. Close area    D. All of the above

    3. There are two scrollbars in a Word document _____ and ______

    A. Horizontal, Vertical               B. Left, Right     C. Top, Bottom                D. None of these

    4. To open a new document, ____ keys are pressed from the keyboard.

    A. Ctrl+S             B. Ctrl+N           C. Ctrl+S            D. Ctrl+V

    5. ______ View shows the document exactly as it will appear after printing.

    A. Print Layout               B. Draft               C. Outline          D. Full Screen

    Fill in the blanks.

    Question:1. The dialog box launcher is present in the lower right corner of each ____ of the ribbon.

    Answer:- Group

    Question:2. The name of the top bar of the Word window is ____.

    Answer:- Title bar

    Question:3. In _____ view, the document is displayed exactly as it will appear after printing.

    Answer:- Print Preview

    Question:4. The shortcut key used to open a new document is ____.

    Answer:- Ctrl+N

    Question:5. The _____ Layout view of MS Word shows the outline of the document.

    Answer:- Outline view

    Short answer questions.

    Question:1. What is a word processor?

    Answer: Word processor is the most used application of the computer, which helps us to enter text through the computer keyboard. Through word processing, we can also create the document and save it for future use. Its biggest advantage is that changes can be made to the document before printing it and there is no need to write the document repeatedly.

    Question:2. Write the names of some word processing software?

    Answer: Some major word processing software:-

    1. Word Perfect

    2. Notepad

    3. Wordpad

    4. MS Word

    Question:3. How is MS Word started?

    Answer: Ways to start MS Word:-

    First way

     Start -> All Program -> Microsoft Office -> Microsoft Office Word

    Second way

     Type “word” in the search bar and press Enter key from the keyboard.

    Third way

     Press Windows key and R key together from the keyboard and a Run dialog box will open, type winword in its search box and press Enter key from the keyboard or click on OK button.

    Question:4. Write the names of the parts of MS Word window?

    Answer: Names of parts of MS Word window:-

    1. File menu

    2. Quick access toolbar

    3. Title bar

    4. Tabs

    5. Ribbon

    6. Dialog box launcher

    7. Ruler

    8. Text area

    9. Vertical and horizontal scroll bars

    10. Status bar

    11. Document views

    12. Zoom slider

    Question:5. Define text area?

    Answer: The large area below the ruler is called text area. We can type our document in this text area. The blinking vertical line in the upper left corner is called cursor. It indicates the insertion point.

    long answers Questions:-

    Question:1. Describe the special features of MS Word?

    Answer: Special features of MS Word:-

    1. MS Word is a word processing application software developed by Microsoft Corporation, which is used to create documents.

    2. MS Word is a part of MS Office software package.

    3. MS Word is a word processor software which is used for office work such as writing letters, preparing notices, creating resumes, mail merge, writing notes by students and preparing many other documents.

    4. These documents can be saved and can also be changed in the future as per the requirement.

    5. We can add text anywhere in the document through MS Word.

    6. We can easily delete characters, words, lines or pages.

    7. We can move any part of the text from one place to another in a document and can also paste it repeatedly.

    8. We can choose the page size and margins and the word processor fits your text accordingly.

    9. In this, we can find any letter or line and replace it with another letter or line.

    10. With the help of font, we can change the size and style of the text.

    Question:2. Describe the MS Word document view?

    Answer: There are five views of MS Word document:-

    1. Print Layout View:- Print Layout View shows the document exactly as it will appear after printing.

    2. Full Screen Layout View:- This layout helps us to make our document easily readable on the screen.

    3. Web Layout View:- Web Layout View enables our document to be displayed on any browser like Internet Explorer, Google Chrome.

    4. Outline View:- Outline View shows the document in outline form.

    5. Draft View: Draft View is the most used view. We can edit our document very quickly with the help of Draft View.

    Question:3. How to create and save a new file in MS Word?

    Answer: How to create a new file in MS Word:-

    First Method:

    1. Click on New option in File menu.

    2. Select Blank Document option.

    3. Click on Create button.

    Second Method:

    • Press Ctrl+N key from keyboard.

    To save a new file in MS Word:-

    First method:

    ·         Click on the Save option in the File menu.

    ·         The Save dialog box will open.

    ·         Type the name of the document and click on the Save button.

    Second method:

    ·        Press Ctrl+S keys from the keyboard.

     

    Lesson – 4 MS Word Formatting (Part 2)

    Multiple Choice Questions.

    1. To select the entire word, click _______ on it.

    A. Once B. Twice C. Three times D. None

    2. __________ group allows us to change the text font, style, size, color and many other things.

    A. Font B. Style C. Paragraph D. Editing

    3. __________ means to draw a line under the letters while writing them.

    A. Bold B. Italic C. Underline d. None

    4. Using the _______ option, the text appears marked with a highlighter pen.

    A. Font color B. Text color           C. Text highlight color d. All of the above.

    5. After entering the shape, a new tab appears called _____.

    A. Drawing tool format B. Shape tool format C. Drawing shape format D. None

    Write the shortcut keys for the following tasks.

    1. To cut the selected work: Ctrl+X

    2. To paste the cut or copied text: Ctrl+V

    3. To increase the font size: Ctrl+]

    4. To underline the text: Ctrl+U

    5. To change the case of the selected text: Shift+F5

    6. To center align: Ctrl+E

    7. To set double line spacing: Ctrl+2

    8. To replace the text: Ctrl+H

    9. To undo the last operation: Ctrl+Y

    10. To insert a page break: Ctrl+Enter

    Short answer questions.

    Question 1. Write about the Undo command.

    Answer: If a mistake is made while editing the text, it can be corrected by using the Undo command. To correct a mistake, click on the Undo command from the Quick Access Bar or press Ctrl+Z keys on the keyboard.

    Question 2. What are the three main font styles?

    Answer: The three main font styles are as follows:

    1. Bold

    2. Italic

    3. Underline

    Question 3. What are headers and footers in MS Word?

    Answer: Header is the part of our document that appears in the top margin of our document, while the footer part appears in the bottom margin of the page. Headers and footers usually contain additional information, such as – page number, date, author’s name, etc. The text written in the header and footer appears on each page of the document.

    Question 4. How many case changing options are there in MS Word? Write their names.

    Answer: MS Word There are 5 options to change case in Word. Their names are as follows:

    1. Sentence Case

    2. Lower Case

    3. Upper Case

    4. Capitalize Each Word

    5. Toggle Case

    Question 5. How many alignments are there in MS Word? Give their names and shortcut keys.

    Answer: There are 4 ways to do alignment in MS Word. Their names and shortcut keys are as follows:

    1. Left Align – Ctrl+L

    2. Center Align – Ctrl+E

    3. Right Align – Ctrl+R

    4. Justify – Ctrl+J

    Question 6. How can we insert a page break in MS Word?

    Answer: When we reach the end of the page, Word automatically inserts a page break at the end of the page. But if we want to insert a page break at any specific place in the page, then we can insert a page break by using the Ctrl + Enter key to insert a page break.

    Questions with long answers.

    Question 1. Give information about the options of the Clipboard group of the Home tab in MS Word?

    Answer: The Clipboard group is the first group of the Home tab of Microsoft Word. It contains four options Paste, Cut, Copy and Format Painter.

    1. Cut/Copy Text: - If we want to move or copy any text from one place to another in our document, then we have to use the Cut, Copy and Paste commands in our document.

    2. Paste: - If you have cut or copied the text, then you need to paste it at any place in the document. Move the cursor to the place where you want to paste the cut/copied text.

    3. Format Painter:- With the help of Format Painter, we can quickly copy the formatting already applied to the text in our document.

    Question 2. Give information about the options available in the Font group of the Home tab in MS Word?

    Answer: The Font group of the Home tab in MS Word provides us with the facility to set the font style, size, color, and many other things of the text.

    1. Font Face and Font Size:- A font is a specific face or set of printed text characters. A font face or type face is a design that defines the appearance of the characters. Arial and Times New Roman are examples of font faces. Font size defines the size of the letters, we can make the size of the text bigger or smaller as per our requirement.

    2. Font Style:- Through font style we can make our text bold, italic and underline.

    3. Font Color:- Using font color we can type our text with different colors.

    4. Text Highlight Color:- Text highlight color is used to select a text and display it with a dark background.

    5. Text Effects:- Using text effects we can apply effects like outline, shadow, glow, and reflection on our text.

    6. Change text case:- We can change a letter in Word from lowercase to uppercase, or from uppercase to sentence case, instead of typing them again from the keyboard, they can be changed through text case.

    Question 3. What is Word Art? How is Word Art inserted into a document?

    Answer: Word Art is used to insert special text effects into a document. Word Art is a text object. The steps to insert Word Art into a document are as follows:

    1. Click on the Insert tab.

    2. Click on the Word Art option in the Text group.

    3. Select the Word Art object as per your requirement.

    4. Enter the text in the Word Art.

     

    Lesson – 5 MS Word (Part 3)

    Multiple Choice Questions.

    1. After selecting the picture, _______ tab appears.

    a. Format b. Page Layout c. Insert d. View

    2. We can use ____ options while wrapping text.

    a. Square b. Tight c. Behind Text d. All of the above

    3. ___ option is used to remove any unnecessary part of the picture.

    a. Crop b. Rotate c. Group d. Compress

    4. Out of the following ____ options are not present in the Adjust group of the Format tab.

    a. Corrections b. Artistic effects c. Remove background d. Picture Styles

    5. We can find the number of characters in the ____ bar at the bottom of the window.

    a. Task bar b. Status bar c. Title bar d. Scroll Bar

    Questions with very short answers.

    1. Which option divides the text into two or more parts?

    Answer:- Columns

    2. Which page orientation sets the page in horizontal direction?

    Answer:- Landscape

    3. Which option helps two or more pictures to be combined as if they were a single object?

    Answer:- Group

    4. Which option of MS Word can be used to change the colors of a picture?

    Answer:- Color

    5. Which option of MS Word is used to count words?

    Answer:- Word Count

    Fill in the blanks.

    1. There are ___ types of page orientation.

    Answer:- Two

    2. Errors related to ____ are indicated by a red wavy line below the incorrect word.

    Answer:- Spelling

    3. ___ is the blank space around the edges of a page.

    Answer:- Margin

    4. ____ is the text or images that are visible behind the document text.

    Answer:- Watermark

    Short answer questions.

    Question 1. What are margins?

    Answer:- Page margins are the blank space around the edges of a page. We enter text and graphics in the printable area between the margins. Margins are mainly of four types such as left margin, right margin, top margin, and bottom margin. We can change these margins as per our requirement.

    Question: 2. What do you understand by Compress Picture?

    Answer: The Compress Picture option is in the Adjust group in the Format tab. Using this option, the file size can be reduced. In MS Word, the file size can be reduced by compressing images, reducing resolution, and deleting cropped areas.

    Question: 3. Write about Reset Picture?

    Answer: After selecting an image, the Format tab appears, this option in the Adjust group of the Format tab removes the formatting and changes we have made to the selected image.

    Question: 4. What is the Crop option?

    Answer: Using the Crop option, we can remove unnecessary parts of an image. When we select an image, the Format tab appears, in which the Crop command is present in the Size group.

    Question: 5. What do you understand by Orientation?

    Answer: Orientation determines the portrait (vertical) or landscape (horizontal) format of the page. Portrait means that the page is set vertically and landscape means that the page is set horizontally.

    Question: 6. Write the names of the different options available in the Adjust group of the Picture tools format tab?

    Answer: The different options available in the Adjust group of the Picture tools format tab are:-

    1. Corrections

    2. Color

    3. Artistic Effects

    4. Compress Picture

    5. Change Picture

    6. Reset Picture

    7. Remove Background

    Questions with long answers.

    Question: 1. What is a watermark? Write the steps to insert a watermark in a Word document?

    Answer: Watermarks are text or images that appear behind the text in the document. In Word, we get a gallery of ready-made watermarks or we can create a new watermark and set it behind the text of the document. Steps to add watermark in Word document:-

    1. Click on Page Layout tab.

    2. Click on Watermark option in Page Background group.

    3. Select watermark as per requirement in Watermark gallery.

    Question: 2. Write a note on Spelling and Grammar Check feature of MS Word?

    Answer: MS Word provides us facility to check and correct spelling and grammar related errors in the document. Steps to check spelling and grammar:-

    1. Click on Review tab.

    2. Click on Spelling and Grammar command.

    3. Correct the errors as per the suggestions given in Spelling and Grammar dialog box or as per your understanding.

    4. Click on Close button.

    Question: 3. Write the steps to print a document?

    Answer: Steps to print a document:-

    1. Press Ctrl+P keys on the keyboard.

    2. The Print pane will appear. In it, select the range of pages that you want to print.

    3. Select Number of Copies.

    4. Select other options as required.

    5. Click on the Print button.

     

    Lesson – 6 MS Word (Part 4)

    Multiple Choice Questions.

    1. _____ keys are used in tables to move forward to different cells.

    A. Control B. Shift C. Tab D. Home

    2. Table button is present on ____ tab.

    A. Home B. Layout C. Insert D. View

    3. We can change the width of the column from the ___ button of the Table group.

    A. Select B. View Gridline C. Properties D. None

    4. A ____ is made up of columns and rows.

    A. Document B. Table C. View D. Data

    5. A ____ is made up of a cut area of ​​columns and rows.

    A. Cell B. Table C. View D. Data

    Very short answer questions.

    1. Which key moves the cursor to the next cell by pressing?

    Answer:- Tab

    2. What is the area between rows and columns called?

    Answer:- Cell

    3. The Split Cell option is in which group of the Layout tab?

    Answer:- Merge group

    4. Which option is used to merge two or more cells?

    Answer:- Merge Cell option

    Fill in the blanks.

    1. ___ is an easy way to write data in rows and columns.

    Answer:- Table

    2. The Table group of the ____ tab has the option to create tables.

    Answer:- Insert

    3. ______ a cell means to divide it into two or more cells.

    Answer:- One, Split

    4. The size of the rows, columns and ___ of the table can be changed with the help of the Properties button.

    Answer:- Merge Cell Option

    Short Answer Questions.

    Question 1. Define Table?

    Answer:- Table is used to present data in a hierarchical manner. Through table we can write data in the form of rows and columns. In a table horizontal line is called row and vertical line is called column and the area between row and column is called cell.

    Question: 2. Write the names of different ways to insert table in Word document?

    Answer: There are three ways to create or insert table in MS Word as follows:-

    1. Using Table button

    2. Using Insert Table option

    3. Using Draw Table option

    Question: 3. Explain the use of Split Cell option?

    Answer: Dividing a cell into two or more cells is called splitting cells.

    Question: 4. Explain the use of merge cell option?

    Answer: When we combine two or more cells in a table, this process is called merging or merging cells.

    Question: 5. How can data be entered in a table cell?

    Answer: To enter data in a table, select the cell and enter the data. After entering data in the cell, the Tab key or Right arrow can be used to move to the next cell.

    Long answer questions.

    Question: 1. How will you insert a table in your document? Describe one of the methods?

    Answer: There are three ways to create or insert a table in MS Word as follows:-

    1. Using the Table button

    2. Using the Insert Table option

    3. Using the Draw Table option

     Using the Draw Table option:- We can enter the rows and columns of the table as per our requirement.

    1. Click in the document where we want to create the table.

    2. Click on the Table button in the Table group of the Insert tab. Click on the Draw Table option and the mouse pointer will change to a pencil shape.

    3. Drag the mouse in a rectangular shape, keeping in mind the size of the table. Draw lines in the rectangular box using the mouse to create rows and columns.

    Question: 2. Describe the Properties button of the Layout tab?

    Answer: We can set the appearance of the text written in the table using the Table Properties in MS Word by using the Left, Right, Center alignment to set the text to the left, right and center. We can also change the size of the rows, columns, and cells of the table.

     

    Lesson: 7 Introduction to Multimedia

    Multiple Choice Questions.

    1. The word multimedia is a combination of two words: These are ______and ____

    a. Pictures, sounds b. Audio, video c. Multi, media d. Hardware, software

    2. Animation is of two types, these are _____ and ________

    a. Analog, digital b. Static, hyper c. Raster, bitmap d. Path, frame

    3. Multimedia requires ____ and _____.

    a. Pictures, sounds b. Analog, digital c. Hardware, software d. Multi, media

    4. Input devices include _______ and ______.

    a. Monitor, printer b. RAM, hard disk c. Keyboard, mouse d. Hardware, software

    5. Text in multimedia consists of _____ and ________.

    a. Analog, Digital b. Raster, Bitmap c. Static, Hyper d. Path, Frame

    Fill in the blanks.

    Question 1:- Video can be divided into ____ types?

    Answer:- Two

    Question 2:- There are ____ types of text.

    Answer:- Two

    Question 3:- Path and frame are _____ types.

    Answer:- Animation

    Question 4:- The full name of PNG is ____.

    Answer:- Portable Network Graphics

    Short answer questions.

    Question 1. What is animation?

    Answer: Animation is a part of multimedia. In animation, still images are shown moving. To make them move, various types of effects are added to these images. Software such as PowerPoint, Flash etc. are used to create animation.

    Question 2. What is video?

    Answer: Video is a part of multimedia. In multimedia, video is used to present information in a better way. In video, sound is also played along with moving images.

    Question 3. What is multimedia conferencing?

    Answer: Multimedia conferencing is also called video conferencing. It is an influential field of information technology. With its use, face-to-face communication can be done with people sitting far away.

    Questions with long answers.

    Question 1. What is meant by multimedia? Write about the components of multimedia.

    Answer: The word multimedia is made up of two words, multi and media. Here multi means at least two and media means medium. This medium can also be storage, transmission and communication etc.

    The names of the components of multimedia are as follows:

    1. Text: Written information is called text.

    2. Sound: It is the sound that helps in explaining an idea clearly.

    3. Animation: It creates the effect of movement in still images.

    4. Images: Images are an essential part of multimedia.

    5. Video: Video has moving images as well as sound.

    Question 2. What are the requirements for multimedia?

    Answer: The basic requirements for multimedia are hardware and software. These are as follows:

    Hardware requirements:- 1. Input devices 2. Output devices 3. Storage devices

    Software requirements: These are used to edit and manage multimedia elements. For example: Adobe Director, Media Blender, Multimedia Builder etc.

    Question 3. What is a multimedia presentation? What are the written things that should be kept in mind to create it.

    Answer: Using multimedia presentation, a subject can be presented effectively. The main components of multimedia presentation are-text, sound, video, animation and images etc.

    Things to keep in mind while making multimedia presentation:

    1. Text should be kept to a minimum.

    2. Sound quality should be good.

    3. User should have facility to use keyboard and mouse.

    4. Its size should be small.

    Question 4. Write about the areas of use of multimedia.

    Answer: Multimedia is used in many areas. Some important areas are as follows:

    1. Multimedia is used in the field of education.

    2. Multimedia is used to make models of human body in medical science.

    3. Multimedia is used in the field of entertainment.

    4. It is used to provide information to customers in railway stations, banks, etc.

    5. It is used to have face-to-face conversations with people sitting far away.

     

    Lesson – 8 Storage Devices

    Multiple Choice Questions.

    1. Primary memory is also called __________.

    A. Internal memory B. External memory C. Physical memory D. Auxiliary memory

    2. ___________ memory is read only memory.

    A. ROM B. PROM C. EPROM D. RAM

    3. ___ is not a portable storage device.

    A. External hard disk B. Pen drive C. Hard disk drive D. Memory card

    4. Small sections of memory are called ______.

    A. Cell B. Area C. Intersection D. None

    5. URL stands for _____________.

    A. Uniform Service Book B. Universal Serial Bus C. Universal Street Bus D. Uniform Serial Bus

    Fill in the blanks.

    Question 1:- The storage capacity of a floppy disk is ___.

    Answer:- 1.44 MB

    Question 2:- The storage capacity of a CD is ___.

    Answer:- 700 MB

    Question 3:- ___ memory unit is used to measure the storage capacity of a hard disk.

    Answer:- Gigabyte

    Question 4:- The full name of ROM is _____.

    Answer:- Read Only Memory.

    Question 5:- Pen drive is attached to the ___ port of a computer system.

    Answer:- Universal Serial Bus(USB).

    Short answer questions.

    Question 1: What is memory? Write the names of the two main categories of memory?

    Answer: The ability of a computer system to store data is called memory. Computer memory is used to store data, programs, and instructions permanently or temporarily so that it can be used before or after processing when needed. Memory is also used to store the results obtained from processing. Memory is divided into small sections, called cells.

    There are two types of memory:-

    1. Primary memory

    2. Secondary memory

    Question:2 Name any four secondary memories.

    Answer: The names of secondary memory are as follows:

    1. Hard disk

    2. Floppy disk

    3. Compact disk (CD)

    4. Digital video disk (DVD)

    5. Pen drive

    6. Memory card

    7. External hard disk

    8. Magnetic tape

    Question:3 What is a memory card?

    Answer: A memory card is a type of storage media used in digital cameras, handheld computers, MP3 players, mobile phones, game consoles and printers to store movies, pictures, music and other data. The data in the memory card can be read with the help of a card reader or data cable. Its storage capacity ranges from 4MB to 512GB.

    Question:4 Write a note on pen drive?

    Answer: Pen drive is portable secondary memory. It is a USB-based memory device. It is used to transfer data from one computer to another. Its size is very small, and the speed is fast. Their storage capacity is also high.

    Question:5 Write about CD?

    Answer: CD is portable secondary memory. The full name of CD is Compact Disc. Its storage capacity is much higher than that of a floppy disk. It can store up to 650-700 MB of data. We can only read the information stored in it but cannot rewrite it. One side of it is very shiny on which data and information is stored. It is a reliable memory.

    Questions with Long answers.

    Question:1 Write a note on primary memory?

    Answer: Primary memory is also called internal memory or main memory. This memory is part of the CPU. Primary memory stores only those data and instructions on which the computer is working at that time. Micro conductors are used in it which are very fast and special types of electronic circuits. The larger the size of the main memory of the computer, the faster that computer is considered.

    Question:2 What is a hard disk drive (HDD)? Explain in detail.

    Answer: Internal hard disk is also called fixed disk, it is a permanent type of memory, it works at a lower speed than primary memory. The CPU does not use the data stored in it directly, the data stored in the hard disk is first sent to the main memory and then the CPU uses it. It is made of one or more strong metal plates, on which a layer of metal oxide is coated. Data is recorded magnetically in the hard disk. Data is stored in all the disks except the bottom and top disks of the internal hard disk. A read-write head is installed on each disk. The platters installed in the hard disk rotate the disk at a high speed, the disk rotates at a speed of 5400 to 7200 revolutions/minute. The storage capacity of a typical computer can be from 20 GB to 1 TB.

    Question: 3 What is secondary memory? Tell about any one secondary memory device.

    Answer: Secondary memory is also called external memory, auxiliary memory or physical memory. Data and information can be stored in secondary memory for a long time. The information in it is not erased when the power goes out. Its capacity to read and write data is higher than that of the main memory. Its cost is also very low. Secondary memory is used as auxiliary memory because of its ability to store more information.

    DVD:-

    The full name of DVD is Digital Versatile Disc or Digital Video Disc. It is similar to CD, but its storage capacity is six times more than CD. DVD is used to store advanced multimedia presentations and movies that are made up of high-quality sound and graphics. DVD drive is used to read and write data in DVD. Storage capacities of DVD range from 4.7GB to 17GB.

    Question:4 Write the precautions to be taken while using CD/DVD.

    Answer: The following precautions should be taken while using CD/DVD:

    1. CD/DVD should be stored in the cover.

    2. The shiny side of CD/DVD should not be touched.

    3. Do not write on the shiny side of the CD/DVD with a pen or pencil.

    4. Do not bend the CD/DVD.

    5. Use a soft cloth to clean the CD/DVD.

    Question: 5 What is an external hard disk drive? Write its benefits.

    Answer: An external hard disk is a portable secondary memory. It is a solid-state memory device. It has a very high storage capacity. It is generally used to back up data. After storing data in it, it can be removed from the computer and kept in a safe place.

    Benefits of an external hard disk drive:-

    1. An external hard disk is a portable secondary memory; it can be easily carried from one place to another.

    2. It allows the user to back up data and store information separately from the internal hard drive.

    3. After storing data in it, it can be removed from the computer and kept in a safe place.