Computer Science Class 9 Chapter 8 MCQs With 3 Tests 9th Class Computer Science Chapter 8 Introduction To Windows MCQs TEST 1: 0 Computer Science Chapter 8 – Introduction To Windows Test 1 1 / 20 Control panel allows you to customize which of the following feature? Appearance Themes Printers All 2 / 20 Computer virus is simply a? Disease Type of bacteria Hardware None 3 / 20 The OS windows was introduced by? Intel Microsoft IBM UNIX 4 / 20 Which statement is not true for windows? Different version Difficult to install Ease to remove Both b c 5 / 20 A mouse controls Icons by a? Keyboard Mouse Scanner None 6 / 20 The controlled area on the screen is called? ICON Desktop Screensavers Background 7 / 20 What will be the storage capacity of floppy disk of 3.5 inch is? 512 bytes 512 KB 1.44 MB 1.44 KB 8 / 20 The disk drive labeled with B: specified the? Floppy disk drive HD CD-ROM None 9 / 20 This option allows installation and removal of printers from the computer? Add/ Remove hardware Display Keyboard Printers 10 / 20 The function of antivirus is? To detect virus u To remove a virus Both b c None 11 / 20 Which of the following is not a windows application? C++ BASIC Word None 12 / 20 Which of the following is not the function of OS? Memory Management Inserting disk in the drive I/O devices management Load programs 13 / 20 Shutdown command? Alt + F4 Alt + Fl Alt + F5 Alt + F6 14 / 20 Ms Windows is a? Application software OS Graphics software Data Base 15 / 20 Which of the following disk may have multiple partitions? DVD HD CD None 16 / 20 In a file ABC.txt the file extension is? ABC txt ABC.txt None 17 / 20 Antivirus is? Hardware Software Floppy HD 18 / 20 Kelz is a? Bacteria Disease Virus Anti virus 19 / 20 Windows is a? GUI CLI CLS CPU 20 / 20 The file extension of sound file is? ppt html wav bmp Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 9th Class Computer Science Chapter 8 Introduction To Windows MCQs TEST 2: 0 Computer Science Chapter 8 – Introduction To Windows Test 2 1 / 15 The file created in Microsoft Access database is? DOS XLS BMP MDB 2 / 15 Which of the following operating systems is commonly used in personal computers? DOS Windows UNIX Macintosh 3 / 15 The Windows operating system is used in personal computers about? 90 % 100 % 10 % 50 % 4 / 15 Desktop view is? Internal directory structure of DOS External commands Tree Windows interface 5 / 15 Start is? A check box A button Pop down menu Text box 6 / 15 Which among the following is not an icon? My computer Recycle Bin An open file My briefcase 7 / 15 Folders are? Path Directories Word processor Database 8 / 15 What appears after we turn on a computer and load windows? Icon Desktop Menu Bar Control Icon 9 / 15 Major source of virus is? Fax E-mail Telephone Person 10 / 15 It may be a program or a set of program that can cause extensive damage to your computer system? Virus Antivirus Data Program 11 / 15 Which of the following functions is difficult with a mouse? Double click Entering data Right click Drag 12 / 15 Hourglass shape of mouse pointer indicates? Busy state Drag Selection Edit 13 / 15 On the right side for? Maximization Close Restore Minimization 14 / 15 Which of the following is used to change the system defaults or properties of the computer? Recycle Bin Control Panel Windows Explorer Start Button 15 / 15 To change the background of the desktop ..... on the desktop? Left click Right click Double click Single click Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 9th Class Computer Science Chapter 8 Introduction To Windows MCQs TEST 3: 0 Computer Science Chapter 8 – Introduction To Windows Test 3 1 / 15 Once the selected program starts, a small icon appears on the? Format bar Taskbar Toolbar Scroll bar 2 / 15 The bar at the bottom is? Menu bar Selection bar Task bar Drawing 3 / 15 The menu having options like programs, favorites, documents, setting, find, run etc is? Start menu Program menu End menu View menu 4 / 15 What are called the small computer programs which are used to destroy other computer programs? Virus Anti-virus Software Firmware 5 / 15 The first thing which we see after logging into the computer is? Window Icon Desktop None 6 / 15 GUI is more? Customizable Stable Efficient All 7 / 15 Which of the following is not the control menu? Close Max Min Shutdown 8 / 15 We can shutdown computer by pressing? Start + Shutdown File + Close Max + Exit Double click mouse 9 / 15 What are called the small computer programs which are used to protect computers? Virus Anti-virus Software Firmware 10 / 15 GUI stands for? Geometrical interface Graphical use User interface Graphical user interface 11 / 15 It launches the internet explorer browser? GU Recycle bin Internet explorer Folders 12 / 15 Which of the following is true about a floppy disk? C: A: D: E: 13 / 15 Which of the following icons of windows is used to access different disk drives of computers? Recycle bin My computer My Documents None 14 / 15 It offers an easy to reach location where we can store and retrieve important data? HD My documents My computer None 15 / 15 In my computer we can access? Hard drive Floppy drive Network drive All Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz
Computer Science Class 9 Chapter 7 MCQs With 3 Tests 9th Class Computer Science Chapter 7 Computer Software MCQs TEST 1: 0 Computer Science Chapter 7 – Computer Software Test 1 1 / 20 DOS is a? Software Hardware Application None 2 / 20 The DOS command for creating a new subdirectory is? MKDIR RIVIDIR CHDIR None 3 / 20 System software can be subdivided into? Service OS Translator All 4 / 20 Clearing the screen? CLS DEL MKDIR RVIDIR 5 / 20 Finding the DOS version? DIR VER REN TYPE 6 / 20 Multi user operating and Multitasking operating system? Windows Windows NT UNIX Macintosh 7 / 20 REN command? Displaying a directory Deleting a file Renaming a file Displaying a file 8 / 20 Application software can be subdivided into? Business Entertainment Education All 9 / 20 GUI stands for? Grand user interface Graphic user interface Graphic Unprime interface None 10 / 20 Which of the following is not an example of application software? MS-Word MS-Excel Windows Lotus 123 11 / 20 Which of the following is not an example of system? MS-Word OS Translator Drivers 12 / 20 The system software is used to control the? Software Hardware Both a b Freeware 13 / 20 Operating system is a software? System Application Shareware None 14 / 20 Set of programs that coordinate the computers software and hardware is called? Operating system Application software Flowchart All 15 / 20 Example of command line interface is the command prompt provided by? Windows Linux Ms-Dos None 16 / 20 “It reduces the size of stored text files.” The statement is true for which of the following choices? Translator Norton’s editor Data compression Library 17 / 20 The interface provided by a matrix of row and column for manipulate with numeric data is called? Spreadsheet Word processor Database Graphic 18 / 20 UNIX is a? Operating system Application software Hardware Firmware 19 / 20 DOS is a user operating system? Multi Single Multi tasking Both a c 20 / 20 Which of the following operating systems does not provide networking features? Windows DOS UNIX None Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 9th Class Computer Science Chapter 7 Computer Software MCQs TEST 2: 0 Computer Science Chapter 7 – Computer Software Test 2 1 / 15 Which of the following does not contain instructions in machine language? Batch file Text file Executable file Both A or B 2 / 15 NT stands for? Number techniques New technology New transistor None 3 / 15 Which DOS command is used to delete one or more specified files from the disk? DELTREE CHDIR DEL RM 4 / 15 Which software controls basic I/O devices? Device driver Anti virus Business software OS 5 / 15 Which is the most user-friendly OS? DOS UNIX GUI None 6 / 15 Which of the following file contains DOS internal command? Batch file Command file Executable file Both A and C 7 / 15 How many types of DOS commands are there? 2 3 4 5 8 / 15 UNIX operating system is developed in language? Pascal C COBOL Java 9 / 15 Disk operating system are named because of the fact that they? Perform operations on disks on Reside on disks Need 1.4 MB disk User friendly 10 / 15 Floppy disk drive is recognized by? C:\ D:\ A:\ F:\ 11 / 15 The special files of DOS are? COM Exe Bat All 12 / 15 If A:My is written on DOS prompt it means? File name My and drive is A The syntax is not valid File name is A This file is batch file 13 / 15 C:binyour.bat means? The statement is invalid Your file is batch file C drive has command file This is an executable file 14 / 15 Which of the following DOS commands is used to change from current directory to the root of the drive? CD Root CD\ CD.. Both b and c 15 / 15 Which of the following DOS commands is used to make a new directory? CHDIR MKDIR MD Both B And C Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 9th Class Computer Science Chapter 7 Computer Software MCQs TEST 3: 0 Computer Science Chapter 7 – Computer Software Test 3 1 / 15 Which of the following commands is used to delete a directory? CHDIR VIKDIR RVDIR DEL 2 / 15 How many wildcards are used in DOS? 2 3 4 5 3 / 15 Dir can have which of the following parameters? Date Time Drive Volume 4 / 15 Prompt St means? Invalid command Prompt and task Time will appear Prompt with difference 5 / 15 To view all files in the current directory that has names containing the characters “ab” and having extension “exe” the command is written as? DIR ab.exe DIR ab*.exe DIR *ab.exe DIR *ab*exe 6 / 15 Which command is used to copy one or more files and subdirectories in a directory? COPY XCOPY DISKCOPY CLS 7 / 15 Which command is used to delete all files and subdirectories in a directory? DELTREE RD DELETE MD 8 / 15 Which command is used in DOS to display the volume label and serial number if they exist? VOL BACKUP VER TYPE 9 / 15 The command DIR???.* displays files that have? Filenames with three characters and have extension of single character Filenames with maximum three characters and having any extensions Filenames that must have three character names and have any extensions. Both A And C 10 / 15 Which of the following commands is used to set or reset attributes of files? DIR XCOPY ATTRIB DISCOPY 11 / 15 The general syntax of DATE command is DATE [mm-dd-yy] in which the value of mm may be? 1 to 12 I to 31 80 to 99 1980 to 2099 12 / 15 Which of the following command is used to see the volume label and serial number of disk? VOL VER CHKDSK TYPE 13 / 15 How many characters can be used to assign a volume label of a disk? 11 111 256 110 14 / 15 Which of the following commands is used to check errors on the disk and to fix these errors? XCOPY VER CHKDSK None 15 / 15 Which of the following commands is used to display the directory structure of a drive or path? DELTREE TREE CHKDSK DIR Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz
Computer Science Class 9 Chapter 6 MCQs With 3 Tests 9th Class Computer Science Chapter 6 Boolean Algebra MCQs TEST 1: 1 Computer Science Chapter 6 – Boolean Algebra Test 1 1 / 20 Boolean algebra was formulated by English Mathematician George Boole in? 1857 1853 1854 1847 2 / 20 If Z is a Boolean variable then its value can be? 0 – 9 0 – 7 0 1 0 or 1\ 3 / 20 Which of the following are basic logical operators in Boolean algebra? AND OR NOT All 4 / 20 The operator that gives complement of the given value is called? AND OR NOT All 5 / 20 If A = 1 and B = 0 then A And B = ? 0 10 11 1 6 / 20 Boolean Algebra is the __ of logic? Mathematics Solution Algebra Geometry 7 / 20 ..... uses symbols to represent logical statements instead of words? Algebra Geometry Boolean Algebra Digital data 8 / 20 If A = 1,B = 0 then A and B = ? 0 10 11 1 9 / 20 If A =1, B=1, C=O then A+B+C = ? 0 10 01 1 10 / 20 If A = 1 ,B =0, C = 1 then X = A + B + C ? 0 101 1 10 11 / 20 A + B = B + A and A . B = B. A represents which of the following? Existence of identity Commutative law Associative law Idempotent law 12 / 20 Boolean Algebra was formulated by the ? Charles Babbage Napir Pascal George Boole 13 / 20 According to distributive law A . (B + C ) = ? A+(B . C) (A+B) . (A+C) A . B + A . C (A+B) + C 14 / 20 According to Existence of identity element A . 1 ? 1A 0 A 1 15 / 20 As per Existence of inverse A + A Z ? 0 2A 0 1 16 / 20 Computer chips are made up of ? Transmitters Transistors Circuits None 17 / 20 According to inverse the output will be 0 if ? A + A A . A 1 + A 0 + A 18 / 20 Boolean Algebra consists of In Boolean Algebra each variable at one time can take how many values? Variable Constant Both None 19 / 20 AND operator represent ? . * / “” 20 / 20 In Boolean algebra each variable at a time can take how many values? 1 2 3 4 Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 9th Class Computer Science Chapter 6 Boolean Algebra MCQs TEST 2: 0 Computer Science Chapter 6 – Boolean Algebra Test 2 1 / 14 Which is called an unary operator? NOT AND OR All 2 / 14 All electronic devices consist of circuits of? Buttons Cables Elements Switches 3 / 14 A switch at any given time is in one of the states? 2 4 1 5 4 / 14 Which operator is used for logical multiplication? OR AND NOT All 5 / 14 Which of the following operations are used by the Boolean Algebra? Boolean Addition Boolean Multiplication Complement All 6 / 14 Logical addition refers to operation of ? OR gate AND gate NOT gate Inverter gate 7 / 14 A serial circuit is represented by ? – operator . operator + operator All 8 / 14 Boolean Algebra derives its name form the British mathematician? Napir Charles Babbage George Boole Bill Gates 9 / 14 A Boolean variable can only have one of the two values? 3,1 2,0 0,1 0,0 10 / 14 An OR gate has at least inputs ? 2 3 4 1 11 / 14 An AND gate has at least inputs ? 2 3 4 1 12 / 14 A parallel circuit is represented by ? . operator – operator + operation All 13 / 14 Two valued Boolean Algebra is a set that has elements and operations In order to get high output in AND gate all the input must be? High Low Equal None 14 / 14 The output of the NOT gate is always the ......of the original value? Same Reverse Both a b None Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 9th Class Computer Science Chapter 6 Boolean Algebra MCQs TEST 3: 0 Computer Science Chapter 6 – Boolean Algebra Test 3 1 / 15 Which of the following is a proposition? What is your Name? Who is your father? Are you male? None of these 2 / 15 In the representation of Boolean function, the A bar is assigned the value? 0 1 A Aa 3 / 15 The table that represents the output of a Boolean expression for all possible combination of input is called? True Table Truth Table Test Table Boolean Table 4 / 15 Which of the following logical operator is denoted by + sign ? AND OR NOT None 5 / 15 Boolean Algebra deals with ? Octal digits Hexadecimal digits Decimal digits Binary digits 6 / 15 Truth table show all possible combinations of ? Inputs Outputs Both a b None 7 / 15 Boolean operators and Boolean variables combine to form Boolean ? Outputs Expression Both a b None 8 / 15 Who did overcome the disadvantages of Boolean algebra laws for simplification of expression? Pascal Charles Babbage Maurice Karnaugh George Boole 9 / 15 Which is Boolean constant ? 0 1 0 1 – 1 10 / 15 X, Y are called ? Boolean constant Variables Numbers None 11 / 15 we can use it to change the order of evaluation of operations in a Boolean expression? Bars Parentheses Square brackets Braces 12 / 15 A truth table of a two variable expression will always have? 20 2 1 22 23 13 / 15 f ( x, y ) = x + y is a ? Boolean variable Boolean Expression Boolean Function Boolean Algebra 14 / 15 Standard product is known as? Boolean function Maxterms Minterms Literals 15 / 15 Standard sum is known as? Boolean function Maxterms Minterms K-map Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz
Computer Science Class 9 Chapter 5 MCQs With 3 Tests 9th Class Computer Science Chapter 5 Number Systems MCQs TEST 1: 0 Computer Science Chapter 5 – Number Systems Test 1 1 / 20 The ASCII is a code? 5 bit 6 bit 7 bit 8 bit 2 / 20 The EBCDIC is a code? 5 bit 6 bit 7 bit 8 bit 3 / 20 The collection of facts and figures is called? Information Statistics Mathematics Data 4 / 20 The data after processing is called? Information Processed Percentage Information 5 / 20 The set of characters including 26 characters of English alphabets and 10 decimal digits is called? Numeric data Alphabet data Alphanumeric A11 6 / 20 Computers directly understand digits? Decimal Binary Octal Hexadecimal 7 / 20 Computer did not directly understand? Letters Decimal Both a b None 8 / 20 45, 26, 15, 40 is a? Arranged data Mechanical Raw Fixed 9 / 20 Data is classified into typed? 2 3 4 None 10 / 20 Binary numbers are? 1,3 0,10 0, 1 1,1 11 / 20 Real data contains numbers, which may be? Fractions Whole Numbers Both a b None 12 / 20 The base of decimal number system is? 2 8 10 16 13 / 20 The data is represented on a computer by means of a two state ON and OFF system called? A word Binary system Octal system ROM 14 / 20 The base of binary number system is? 2 8 10 16 15 / 20 The base of octal number system is? 2 8 10 16 16 / 20 The binary number system is used in? Analog computers Binary computers Decimal computers Digital computers 17 / 20 The base of hexadecimal number system is? 2 8 10 16 18 / 20 Alphanumeric characters are expressed in terms of binary codes. In ASCII each character is represented as a? 8 bit code 4 bit code 2 bit code 7 bit 19 / 20 2’s complement of 1011.1 is? 0. 100. 10 0100.1 1011.10 0100.0 20 / 20 I’s complement of 1011.1 is? 0. 100.101 0100.11 1011.10 0100.0 Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 9th Class Computer Science Chapter 5 Number Systems MCQs TEST 2: 0 Computer Science Chapter 5 – Number Systems Test 2 1 / 15 A byte consist of nibbles? 1 2 3 4 2 / 15 10° =? 10 0 1 101 3 / 15 The digit from 0 to 9 are called? Decimal Octal Binary Hexa 4 / 15 The binary equivalent of ( 20)10 is? 1111 10011 10010 10100 5 / 15 The decimal equivalent of ( 20)10 is? 18 24 20 invalid 6 / 15 Decimal number system consists of? 0,1,2,3,4,5 0,1,2,3,4,5,6 0,1,2,3,4,5,6,7, 0,1,2,3,4,5,6,7,8,9 7 / 15 453 =? 4 x 102 + 5 x 10 + 3 10 x 42 + 5 x 10 4 x 102+ 5 x 10 1 + 3 x 100 None 8 / 15 The decimal equivalent of (10)s is? 9 10 11 8 9 / 15 (236)10 = (?) 10 ? 158 157 155 236 10 / 15 (A)16 =? 10 11 16 12 11 / 15 In 645 the most significant digit is? 4 5 6 45 12 / 15 In 724 the least significant digit is? 7 4 2 72 13 / 15 The number system that contains the range of 10 number and 6 alphabets is? Decimal Octal Binary Hexa 14 / 15 (0001)2 = (?) A 10 1 7 15 / 15 Binary digits are denoted by? IBT TBI BIT BTI Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz 9th Class Computer Science Chapter 5 Number Systems MCQs TEST 3: 0 Computer Science Chapter 5 – Number Systems Test 3 1 / 15 01001(2) in decimal system is equal to? 10 15 18 9 2 / 15 I’s complement of 01110 is? 00011 10001 11001 01010 3 / 15 In binary number system 0 + 0 =? 1 0 00 10 4 / 15 In binary number system 1 X 0 =? 1 0 10 01 5 / 15 ASCII for 6 is equal to? 0110001 0110110 1101100 0011010 6 / 15 Which of the following is not a real number? 76.2 6.2 4 4.0 7 / 15 In Hexadecimal number system the value of E is? 15 12 14 16 8 / 15 The value of hexadecimal digit A is ? 9 10 11 12 9 / 15 The number 822 represent the? Binary number Octal Number Decimal None 10 / 15 Add 01011101 and 00110010? 100111 1010101 10001111 100011111 11 / 15 The binary equivalent of decimal number (3)10 is? 10 11 111 101 12 / 15 The binary equivalent of (F)16 is ? 1010 1110 0111 1111 13 / 15 The hexadecimal equivalent of binary number (101001)2 is? 2A 2B 29 28 14 / 15 The most commonly used character for transmission are? EBCDIC BCD UNI ASCII 15 / 15 In scientific notation power of 10 is called? Logarithm Exponent Mantissa Coefficient Your score is The average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz