Answer Keys
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Chapter 1 Know Your Computer
A. 1. False
2. True
3. False
4. False
5. True
B. 1. Fifth generation computer
a.Computers used in classrooms, homes, banks,
universities, etc.
2. Microcomputer
b. Based on the principle of artificial intelligence
3. Hardware
c. Hallmark of fourth generation computers
4. Microprocessor
d.A bridge between computer system hardware
and application software.
5. Operating system
e.The physical components of the computer
which you can touch and feel.
C. 1. ALU - Arithmetic Logical Unit
2. OCR - Optical Character Recognition
3. MICR - Magnetic Ink Character Recognition Reader 4. LCD - Liquid Crystal Display
5. VDU - Video Display Unit
D. 1. Transistors
2. Charles Babbage
3. High-level
4. portable
5. Assembler
E. 1.The different generation of computers are - First - Vacuum Tube, Second - Transistor, Third Integrated Circuit, Fourth - Microprocessor and Fifth - Artificial Intelligence.
2.Classification of computers on the basis of their size and speed are - Mainframe computers,
Macrocomputers, Minicomputers and Supercomputers.
3.Primary memory is classified into RAM (Random Access Memory) and ROM (Read Only
Memory). Let us observe its differences.
RAM
ROM
It is a read-write memory.
It is read only memory.
Used to store the data that must be
currently processed by CPU temporarily.
It stores the instructions required during
bootstrap of the computer.
It is a volatile memory.
It is a non-volatile memory.
Data in ROM cannot be modified.
Data in RAM can be modified.
4.Plotters are the output devices used for making high-quality graphics, charts, diagrams,
maps, etc. There are different type of plotters available. The three basic types of plotters are:
a. Inkjet plotter: It sprays small droplets of ink onto a piece of paper thereby creating an image.
b. Flatbed plotter: The pen or the inkjet moves in horizontal and vertical directions over a
fixed horizontal flat surface on which a paper is mounted.
c. Drum plotter: It uses a drum revolver or roller to move the paper and the pen or the jets
of the ink during the printing process. The paper is placed over the drum which is then
rotated.
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5. Compiler converts the source code into object code (machine language), the entire file at a
time and produced the error listing along with line numbers, while the interpreter converts
the source code into object code line by line and reports errors line by line, thus program
execution cannot resume until it is rectified.
Who Am I?
Tim Paterson
Chapter 2 Operating System
A.
B.
C.
D.
1. False
2. True
3. True
4. False
5. False
1. MBR
2. Booting
3. RESTART 4. CUI
1. Warm Boot 2. Operating System
3. GUI 4. Cold Boot 5. Booting
1.Operating system is a system software that is an interface between the user and the
computer. It performs the following functions:
a. It recognises input from the keyboard.
b. It sends output to the display screen.
c. It keeps track of files and directories on the disk.
d. It controls the peripheral (input and output) devices such as printers.
e. It acts as an interface between the hardware of a computer and the user.
2.As soon as the computer is turned on, a software, namely, Basic Input/Output System (BIOS)
is run. This software is built into a computer’s ROM. BIOS then does the following:
a. Conducts Power-On Self Test (POST).
b. Loads System Files.
c. Locates Master Boot Record from first Sector of Hard disc to RAM.
d. MBR program then load the system files of an operating system into the RAM.
e. Once the system files are loaded, the OS is ready to take control of the system.
3. The two operating system interfaces are CUI and GUI. Let us observe their differences.
CUI
GUI
CUI stands for Character User Interface.
GUI stands for Graphical User Interface.
In this Interface, operating system provides In this Interface, the operating system
an environment where the user needs to
provides a graphical environment where the
type a command to perform a particular
mouse acts as a pointing device. The user
action.
can perform an action just by a mouse-click.
Example: WIndows
Example: Disk Operating System (DOS)
4.If you switch off the computer without giving a proper shut down command then there are
very high chances of losing the data or the System files if they are not properly sent back to
OS and it may also damage the Windows operating system.
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5.The various types of operating systems are:
Single-user Operating System: This OS allows only one user to work on a computer at a
time. This is the type of operating system most people use on their desktops and laptops
today. For example, Windows 98, DOS and the Mac OS.
Multi-user Operating System: A multi-user operating system supports multiple users at the
same time and/or different times. For example, UNIX, Windows NT and Novell Netware.
Chapter 3 MS Word 2010 – Advanced Features
A. 1. False
2. False
3. True
4. False
5. False
B. 1. Thesaurus
2. Portrait Orientation
3. Shading
4. Style
5. Show/Hide
C. 1. Hanging Indent
2. Mirror Margins
3. Orientation
4. Format Painter
5. Style
D. 1.Tab key is used for the preparation of a columnar data in MS Word. When a Tab Stop is set,
MS Word automatically removes the default Tab Stops to the left.
2.Different margins are - Left, Right, Top, Bottom, Gutter, Gutter Position.
3.Page numbers gives a unique identity to a page which also serves as a location for the
content.
4.Footnote is a comment printed at the bottom of a page to give extra information about
something that has been written on that page. Endnote is a citation of sources which are
given at the end of a document.
select Page
5.We can insert page numbers in a MS Word 2010 document from Insert Tab
Number from Header and Footer section.
Chapter 4 MS Word 2010 – Mail Merge
A. 1. True
2. False
3. False
4. True
5. False
B. 1. Mail Merge
2. Main Document
3. tabular
4. Mail Merge Recipients
5. Merged document
C. 1. Main Document
2. Data Source
3. Use an existing list
4. Mail Merge 5. Address Book
D. 1.Mail Merge is a feature of MS Word that allows to create a large number of documents by
merging the document containing repeated information with the documents containing
different data for each document.
2.Mail Merge is a feature of Microsoft Word that helps in sending the same letter to number
of people. Hence it saves our time and effort. Using mail merge, we can create personalised
letters, envelopes, labels, name tags, e-mail messages and directories.
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3. Steps for creating a merged document are:
a. In the task pane, click on the More items... option. Insert Merge Field dialog box will appear.
b. Click on the desired field that should appear in the letter. Select Insert and then click on
Close.
c. Click the Next: Preview your letters option.
d. Click on Next: Complete the merge option.
e. Task pane now shows the Complete the merge section.
f. Click on Edit individual letters… option in the Merge section of the task pane.
g. Select the records you want to merge in the Merge records section of the Merge to New
Document dialog box. Click OK.
h. Microsoft Word will create a new merged document.
4. Different data sources are:
a. Excel spreadsheet. An Excel spreadsheet works well as a data source for mail merge.
b. Outlook Contact List. You can retrieve contact information directly from your Outlook
Contact List on to Word. ...
c. Use an existing list
Chapter 5 MS PowerPoint 2010 – Advanced Features
A. 1. True
2. False
B. 1. Handout
3. True
4. False
5. False
a.A link to a slide, a web page, an email or
any other program.
2. Hyperlink
b.
3. Animations
c.An option with which slides can be picked
from another presentation.
4. Insert
d.The reading material given to the audience
during the presentation.
5. Reusing Slides
e.Special effects that are added in a
presentation.
A menu where Table option is present.
C. 1. Slide Transition and Slide Animation
a. Slide transitions are the animation effects that are applied to whole slide whereas
animation effects are applied to objects (text, shape, picture etc.) on a slide.
b. For a slide you can have only one transition effect while each object on the slide can
have multiple animation effects.
c. Transition effects appear in PowerPoint slideshow view when slides change from one to
the next. While for animation effects, we can control the speed of each slide transition
effect, and we can also add music or sound.
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2. Template and Theme
A theme is a predefined set of colours, fonts, and visual effects that you apply to your slides
for a unified, professional look.
A template is a design or a pattern of a slide or group of slides. These templates contain
layouts, theme colours, theme fonts, theme effects, background styles, and even content.
3. Notes Page Master and Slide Master
Notes Page View displays the speaker notes for each slide. They are not a part of the
presentation, so the audience will not see them. Notes Pages can be printed with the slides.
The text of the notes is regular text that can be formatted. PowerPoint allows you to change
the formatting of all the Notes Slides of a presentation.
The Slide Master is a part of the presentation template. It controls the overall formatting
and object placement for the presentation.
4. Insert Charts and Insert Tables
Charts are used to display or analyse the data in a pictorial format. To insert a chart we need
to follow a few steps:
a. Click on Insert tab, then Chart option from Illustrations group.
b. The Insert Chart dialog box appears. Select a category in the left pane and choose a type
from the right pane. Click OK.
Tables are used to represent data in the form of rows and columns then it makes a table.
Tables can also be inserted in a presentation. Follow these steps to insert a table in a
presentation.
a. Click on Insert tab then the Table dropdown list from the Tables group. Now, click on
Insert Table… option.
b. The Insert Table dialog box appears. Specify the number of rows and columns required
in the table and click OK.
5. Merge Cells and Split Cells
Merge cell option combines various cells into 1 cell.
Split cell option splits a big cell into smaller cells.
D. 1.Hyperlinks can be used to create a link to show an external document in a running
presentation.
2.Sometimes we require data from an already saved presentation. We can reuse the slides
form old presentations to save our time and effort.
3.It is template slide on which the text/logo/image/fonts/header/footer common to all slides
can be put up. It a slide that can change the look of all the slides in a presentation.
4.Notes Page View displays the speaker notes for each slide. They are not a part of the
presentation, so the audience will not see them. Notes Pages can be printed with the slides.
The text of the notes is regular text that can be formatted. PowerPoint allows you to change
the formatting of all the Notes Slides of a presentation.
Handouts are the printed materials given to the audience during the presentation. You can
make changes in the Handout Master slide before printing so that it can be applied to all
the handouts of the presentation. The changes may include repositioning and resizing the
headers and footers, etc.
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5.Charts are used to display or analyse data in the pictorial format. For example, a chart
depicting the averages of different subject marks in a class, where bar chart can quickly
inform the subject with highest and lowest average.
Who Am I?
Sabeer Bhatia
Chapter 6 More About MS Excel 2010
A. 1. date or time
2. Font group
3. Concatenation
4. #NAME
5. Math & Trig -> GCD
B. 1. Get cursor in the cell to edit the data.
2. ##### is displayed
3. #DIV/0! Error is displayed 4. It becomes a label
5. #NULL!
C. 1. =sum(A2:D2) 2. =Average(C2:E2)
3. =Min(A2:A4)
4. =Max(B1:B6)
5. =count(A5:E12)
D. 1. It means changing style for decimal places, date, time, currency etc.
2.AutoSum feature is used to add numbers. It is also used to find the sum, average, maximum,
minimum and count of numbers.
3.Function Library is a group in the Formulas tab of MS Excel 2010. Here different text, date
and time, financial, logical functions have been grouped under different options.
4.If the formula or a function is typed incorrectly, the cell shows the error message. Some
common error messages are as follows:
Error message displayed
#####
#DIV/0!
#N/A
#VALUE!
#NAME!
#REF!
#NULL!
Possible reasons
The column is not wide enough to display the result or the value
Division by zero error (Invalid operation)
Data unavailable
Invalid data
When text is not recognised
Invalid cell reference
Ranges do not intersect or the user is using an invalid range
operator
5. Steps are:
a. Select any 3 adjacent cells of the worksheet.
b. Click on Formulas tab
Function Library
group Math & Trig drop-down list GCD
option. The Function Arguments dialog box appears.
c. Click and type the first number in the Number 1 box and second number in Number
2 box and third number in the Number 3 box, respectively.
d. Click OK.
e. The highlighted cell in the worksheet will show the answer.
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Chapter 7 More About Scratch
A. 1. Turn
2. Reporter
3. Control
4. scripts
5. Looping
B. 1. False
2. False
3. True
4. True
5. False
C. A - Block palette
B - Script Area
C - Blocks Menu
D - Sprite
E - Stage
F - Background Icons
G - New Sprite button
H - Sprite list
I - View full screen
J - Menu bar
D. 1.Scratch provides four different ways to change the backdrop of the stage.
a. Choose Backdrop from Library
b. Paint New Backdrop
c. Upload Backdrop from File
d. New Backdrop from Camera
2.
Hat Block - The concept of Hat block means a block that starts ascript. As the name says,
these blocks are shaped like a hat in such a way that no block can be placed on top of it.
The bottom of the Hat block is same as that of other blocks so that they can be stacked.
Cap Block - These are the blocks that are made to stop the execution of a script or a project.
They are made in such a manner that no block can be added beneath them.
3.
Repeat Block - The repeat block is used to repeat the blocks within the loop specified
number of times. By default, the number is 10 which can be altered.
Forever Block - The forever block is used to repeat the blocks within it repeatedly. This
block is primarily used in creating games.
4. Follow the steps given below to change the costumes of the Sprite:
a. Select Costumes tab to see and edit the Sprite’s costume.
b. The New Costume options are displayed as shown in the figure. The options are: Choose
options from gallery
Paint New Costume
Upload Costume from file
New
Costume from Camera.
c. Click on Choose costume from library button. The number of choices will appear in the
Costume Library dialog box.
d. Select the costume from the Category section. Select Beetle from Animals section and
click on OK.
e. You will see the new costume of the Sprite.
5. Repeat block is used to repeat a block specified number of times.
Who Am I?
Mitchel Resnick
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Chapter 8 Introduction to QB64
A. 1. True
B. 1. F5
C.
2. False
2. BAS
3. True
3. Save As
4. False
4. Save
5. False
5. CLS
6. PRINT
Title bar
Menu
bar
Program
name
Vertical
scroll bar
Horizontal
scroll bar
Status bar
D. 1.QB64 is an editor (IDE) with a compiler that provides complete support for QBASIC
programs. QB64 works on 64-bit systems and was originally compiled with QBASIC 4.5.
2.The different components of QB64 are - Title Bar, Menu Bar, Program Name, Program Area,
Horizontal Scroll Bar, Vertical Scroll Bar, Status Area and Status Bar.
3. The CLS command stands for Clear Screen clears the content of the screen.
4. To execute or to run a QB64 program click on Run menu and select Start option.
5.Save As option is used to save a file for the first time with an appropriate name or to save an
existing file with an alternate name while Save is just used to update changes in an already
saved file.
Chapter 9 QB64 – Statements
A. 1. True
2. False
3. False
4. True
5. False
B. 1. STRING Variable and NUMBER Variable
String variable is a variable that stores Strings which are words, characters, digits, special
character or a combination of all.
Numeric variable is a variable that stores numeric values.
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2. INPUT and LET
INPUT Statement is a statement used for accepting a value (text or numbers) from the user
at the time of program execution.
LET Statement is a statement used for assigning a value to a variable within a program
whose value may change during the execution of the program.
3. PRINT with semicolon (;) and PRINT with comma (,)
Comma Separator (,) is similar to a Tab key. A comma when used between the two printing
values with one PRINT command leaves a gap of one tab space.
Semicolon Separator (;) is similar to pressing Space bar key once. A semicolon when used
between two printing values with one print command leaves a gap of one space.
4. REM and PRINT
REM adds comments/remarks in a program. Remarks are non-executable statements in a
program that enhance the readability of the program code.
Print is used for displaying a value, message or an output on the monitor. Print is an
executable statement.
C. 1. Print “Hello QB64” 2. Print “ ” 3. LET N2=10 4. LET NAME2$= “ABC”
5. REM THIS IS A SAMPLE PROGRAM 6. INPUT “class teacher’s name”, CLTEACHER
D. 1.PRINT Statement It is a statement used for displaying a value, message or an output on the monitor.
Print “My age is “, 14
Print 4+5;
2.A variable is a named memory location that contains a value which may or may not change
during the execution of the program. A variable can hold only one value at a time.
Variables are of two types.
a. Numeric Variable - It stores only the numeric values. For example, A = 10.
b. String Varibale - It is used for storing string values (character set within double quotes).
The string variables can be named using letter and numeric digits followed by a ‘$’ sign.
For example, Var$ = “Name”.
3.REM adds comments in a program. Remarks are non-executable statements in a program
that enhance the readability of the program code. It only appears in the programming
code, and has no effect on the output of the program.
For example, REM Program to print odd numbers.
4.Input statement is used to take input from the user during the execution of the program.
Each input is stored in a separate variable. In order to store Alphanumeric/text input, the
variable name must be followed by a $ sign.
For example, Input “Enter Your Name”, Name$
5.LET statement is used for assigning a value to a variable within a program whose value may
change during the execution of the program.
For example, LET A=10
LET B=20
LET C= A+B
Print C
Who Am I?
John G. Kemeny
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Chapter 10 QB64 – Programming Statements
A. 1. False
2. False
3. True
4. False
5. True
B. 1. N=7
2. PRINT 4-2 3. PRINT 20/5 4. PRINT “Good” + “Morning”
C. 1. CLS
INPUT “ENTER NUMBER, N1 INPUT “ENTER NUMBER”, N1
INPUT “ENTER NUMBER, N2”
INPUT “ENTER NUMBER”, N2
N3 = N1 + N2
PRINT “THE SUM IS”, N3
2. INPUT “ENTER YOUR NAME”, NAME
NAME$
INPUT “ENTER MARKS”, M1
PRINT “HELLO”, NAME NAME$
PRINT “YOU SCORED”, M1
D. 1.Every programming language has three types of programming statements. They are:
Sequential, Conditional, Iterations or Loops.
2.IF command is used for executing a statement based on a condition. It implements the
branching of the execution in two parts:
a. If the condition written next to IF is true, then the statement part will be executed.
b. If the condition is false, then the statement after the ELSE part will be executed.
Example: REM PROGRAM TO CHECK A NUMBER FOR EVEN AND ODD
INPUT “ENTER NUMBER”, A
IF A%2=0 THEN PRINT “EVEN NUMBER”
ELSE PRINT “ODD NUMBER”
END
3.Operators are the symbols used for evaluating an expression in a language. For example,
A=B+C, where = and + are operators.
4.We use relational operators to make a comparison between any two values. It displays the
result as true or false depending upon the value given.
For example, A=7
B=8
Print A>B ‘this will give false as A is not greater than B. Here, > is a relational operator.
5.The ELSEIF statement allows us to execute a set of statements if the previous condition is
false. It is generally used when we have multiple conditions in a program.
INPUT “ENTER BILL AMOUNT”, AMT
IF AMT <= 6000 THEN
DISCOUNT = 0
ELSEIF AMT > 6000 AND AMT <= 15000 THEN
DISCOUNT = 0.2 * AMT
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ELSEIF AMT > 15000 AND AMT <= 50000 THEN
DISCOUNT = 0.3 * AMT
ELSE
DISCOUNT = 0.7 * AMT
END IF
Chapter 11 Introduction to Macromedia Flash
A. 1. True
2. False
3. True
4. True
5. False
6. True
B. 1. Movie and Scene
Movie is an animated Flash document.
Scene consists of the animated objects.
2. Timeline and Layers
Timeline is the area on the screen to work with layers and frames.
Layer is a transparent sheet that contains various objects.
3. Stage and Frames
The stage is the large white rectangle where you add every piece of content to be viewed in
a movie.
Frame represents the content of the movie at a particular moment of time.
4. Keyframes and Blank Keyframes
Keyframe: These are the frames that are inserted into the movie and which contain the
contents of the previous frame. In a keyframe, you define a change to properties of an
object for animation.
Blank keyframes: These are the frames with no object, and are denoted by a small circle on
the Timeline.
C. 1. FILE
2. CONTROL 3. INSERT
4. INSERT
5. WINDOW
D. 1.To make interactive animations which can also be embedded into a website to make it
interactive. It is a user-friendly software that does not require any special programming
skills to work on therefore we can easily create movies and motion pictures with Flash.
2.The Flash Tools panel helps to create, select paint and modify shapes for the artwork in the
movies.
3.Animation is a process of giving moving effects to still pictures by playing a series of
individual frames appearing one after the other at a high speed so it appears to be moving.
Types of animations are:
a. Frame-by-Frame Animation: The basic form of animation is frame-by-frame animation.
Here you create the object for each frame to produce an animation sequence. This
animation employs unique drawings in each frame. Thus, it is tedious and time
consuming, and the movie created occupies a lot of disk space.
b. Animation with tweening effects: It is the process of generating intermediate frames
between two images, called key frames, to give the appearance that the first image
evolves smoothly into the second image.
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4.Symbols are objects which have been created, stored and added to the library. Once stored
in the library they can be used repeatedly either in the same movie or another movie.
Who Am I?
Mark Zuckerberg
Chapter 12 Introduction to Email
A. 1. True
2. False
3. True
4. False
5. True
B. 1. com a. U.S. military entity
2. edu b. educational institution
3. gov c. government entity
4. mil d. network access provider
5. net e. commercial enterprise
C. 1. BCC
2. DNS
3. Email Address
4. URL
5. Hostname
D. 1.URL stands for Uniform Resource Locator (URL) is an address that uniquely identifies a
location on the Internet. For example, in the URL https://www. cambridgeindia.org:
Protocol is https
Host computer name is www
Lower level domain name is cambridgeindia
Upper level domain name is org
2.Email Address is like a normal address that we use for communication. Without address we
will not be able to send or receive emails.
3. Advantages are:
Disadvantages are:
a. Environment friendly
a. Unwanted mails/spam/junk
b. Quick and inexpensive
b. Privacy concern
c. Immediate medium of communication
c. False representation of identity
4. Composing an email means creating an email and then sending it to the recipient.
5.It is important to sign out from your email account properly as it ensures that no one else
can access and misuse it, without the password.
Who Am I?
Tim Berners-Lee
Sample Paper
1. b
10. d
19. b
2. a
11. a
20. a
3. a
12. c
21. c
4. d
13. b
22. b
5. c
14. d
23. a
6. a
15. a
24. d
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7. b
16. b
25. b
8. c
17. c
9. d
18. d
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