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Padasalai.Net’s Special – Centum Coaching Team Question Paper 2017-2018

COMPUTER SCIENCE

CLASS : XII TIME : 3.00hrs MARKS : 150

I. Choose the correct answer: 75 x 1 = 75 1. To move the insertion point with the keyboard……………. Key combination can be used.

a. Ctrl + other key b. Alt + other key c. Arrow + other key d. Shift + other key 2. If the key combination is joined with a ………….. sign.

a. – b. + c. * d. = 3. The new text will be inserted and the existing text would move to the ……………..

a. right b. top c. left d. bottom 4. ………….. Helps the reader to see how the document is divided into paragraph.

a. alignment b. indent c. highlighting d. visual clue 5. To remove the highlighting, select the text and select the ………… option from the color palette.

a. fill b. no color c. no fill d. none 6. ……………. Box is used enter the replacement word in the auto correct entry dialog box.

a. replace b. replace all c. change all d. with 7. Star office writer will wrap the text to the next line and expand the cell making it ……. And ……

a. taller, wider b. wider, taller c. taller, not wider d. taller 8. How many icons in the table formatting tool bar?

a. 10 b. 11 c. 12 d. 13 9. ………… area of the ruler indicates the margins top area.

a. red b. blue c. grey d. white 10. ……………. Is a powerful spreadsheet program included in star office.

a. star office calc b. star office writer c. star office impress d. star office draw 11. How many comparative operators used in star calc?

a. 4 b. 5 c. 6 d. 7 12. ………….. shortcut icon on the formula bar can also be used to select and insert function. 13. …………….. are used to increase or decrease the number of decimal digits.

a. number format : standard format b. number format : add decimal and number format : delete decimal c. number format : currency format d. number format : default

14. Which command can be used to format cells? a. insert cells b. tools cells c. format cells d. none

15. Which command is used to insert cell for star calc? a. tool tool bar b. view tool bar c. insert tool bar d. edit tool bar

16. The cursor becomes a ………….. sign with a small picture of the graph. a. + b. – c. * d. /

17. The programming languages and packages provide their own built-in otherwise called as……… a. system defined b. primitive c. user defined d. a& b

18. Data in a database in most commonly viewed on one or more…………….. dimensional tables. a. 1 b. 2 c. 3 d. 4

19. ……………. When viewing the entire table in unwieldy. a. merging b. searching c. sorting d. filtering

20. How many types of database? a. 5 b. 4 c. 3 d. 7 21. ……………….. records are organized in a tree like structure.

a. net work b. relational c. object-oriented d. hierarchical 22. …………… is its ability to provide extremely quick access and retrieval from large database.

a. SQL b. C++ c. DBMS d. RDBMS

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23. ……… option will allow you to modify the query, where you can change the sort order, alias name etc. a. display query b. query c. modify query d. form

24. …………….. and ……………… types of report. a. primary, secondary b. static , dynamic c. relational, network d. none

25. If you want to transfer each heading together with its accompanying paragraphs, select the command. a. File outline to presentation b. file send outline to presentation c. edit send outline presentation d. file send auto abstract to presentation

26. ……………… and animations are frequently used to make computer games thrilling and realistic. a. high-end graphics b. high-end animation c. cel based animation d. object based animation

27. ……………… simulating a surgical procedure without endangering the life of a human being. a. virtual reality b. vector graphics c. virtual surgery d. none

28. Nearly all digital cameras have the option to save the images in…………… format. a. GIF b. MPEG c. AVI d. JPEG

29. Using sound editing programs such as………….. a. echo b. frequency c. amplitude d. sound forge

30. Sound files stored in the MP3 format have the extension(for MPEG audio)…………. a. .mp3 or .mpeg b. .mp3 c. .mpeg d. .mp3 or .mpga

31. ………………. At the bottom of the screen displays status information such as the number of slides. a. menu bar b. status bar c. tool bar d. formula bar

32. Which command is used to apply a new slide design? a. insert slide design b. tool slide design c. format slide design d. none

33. The styles outline . Enables you to give the outlined headings and topics on your slides a uniform look. a. 0 through 5 b. o through 9 c. o through 7 d. 1 through 9

34. Activate the outline view mode by choosing menu……….. a. viewoutline view b. toolsoutline view c. insert outline view d. none

35. By pressing ……………. Key, you move the one level up. a. enter b. esc c. shift + tab d. tab

36. …………. Attempts to capture a real world object in a program. a. class b. object c. polymorphism d. inheritance

37. ……………. Classes are power packed, as they include the functionality of the base class along with their own unique features. a. base class b. super class c. derived class d. parent class 38. Escape sequence are represented using characters prefixed with a ……………

a. forward slash b. \a c. \b d. backward slash 39. …………….. are executed in the order of precedence.

a. variables b. tokens c. operators d. keywords 40. What will be the value of the following expression? (num1+num2-num3) / 5 * 2 < (num1%10) where num1=99,num2=20,num3=10. a. 1 b. 2 c. 3 d. 0 41. ……………. Variables get undefined values known as garbage.

a. static b. extern c. auto d. register 42. …………….. introduces a variable name and associates it with a specific data type.

a. variables b. declaration statement c. control statements d. none 43. Which error displayed in the following declaration? If (a>b) cout<<”lesser”; else cout<<”greater”;

a. else b. compiler c. misplaced else d. syntax error 44. …………… statements can be nested within one another.

a. switch – case b. if c. if-else d. nested-if 45. Which operator is used to separate for loop?

a. colon b. dot c. semicolon d. comma 46. ……………… statement accomplishes jump from the current loop.

a. case b. break c. control structure d. switch 47. The starting point for the execution of a program is…………….

a. #include b. void main c. function d. return 48. Why do you think the prototype int max(int, int)?

a. dummy variables b. formal variables c. actual variables d. none

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49. The default values can be included in the function prototype from…………… a. left to right b. right to left c. top to bottom d. bottom to top

50. The data type of a function is treated as………… if no data type is explicitly mentioned. a. char b. float c. double d. int

51. num_array[3]=99,stores the value 99 as the ……………. Position of the element. a. third b. fourth c. fifth d. sixth

52. Compare the two given strings, if string are equal returns …………….. value. a. 0 b. =0 c. >0 d. <0

53. Which formula is used to calculate size of the array? a. size=data type x rows x columns b. no.of elements= rows x columns c. rows x columns d. all the above

54. Bjarne Stroustrup initially gave the name…………….. a. C++ b. PASCAL c. FORPRO d. C with classes

55. By default the members will be treated as………….. a. public b. private c. protected d. none

56. ……………….. statement may be read as stud is an instance or object of the class student. a. stud b. stud student c. student stud; d. student

57. The member functions can receive arguments of a …………. a. data type b. static type c. valid C++ data type d. nesting functions

58. ……………. Its scope or visibility is within the class but its lifetime is the life time of the program. a. file b. function c. static d. auto

59. ……………… to a static member variable is done outside the class. a. ending value b. initial value c. middle value d. test value

60. …………….. strategy look for the exact match of a function prototype with that of a function call statement. a. match first b. match best c. best match d. none

61. Integral promotions double data type can be converted to…………… a. float b. integer c. float or integer d. char

62. Declare the operator function operator() in the …………….. part of the class. a. private b. public c. protected d. none

63. …………….. are not associated with any data type. a. constructor b. destructor c. function d. a & b

64. The constructor ass(int s1, int s2) is called………….. a. default constructor b. parameterized constructor c. non-parameterized constructor d. copy constructor

65. The constructor add(add &a) is called as…………….. a. default constructor b. parameterized constructor c. non-parameterized constructor d. copy constructor

66. The destructor has the same name as………… a. class name b. same name prefixed ~ character c. same as class name prefixed by ~ character d. same class name prefixed by ! character

67. ……. In real life (children acquire the features of their parents in addition to their own unique features. a. polymorphism b. inheritance c. overloading d. none

68. ………….. members of the base class are not inherited they are only visible cannot be accessed. a. public b. protect c. private d. pointer

69. Destructors are executed in the ……………. a. descending order b. ascending order c. reverse order d. none

70. ……………… have totally changed the way we work, live and think. a. digital computer b. super computers c. mini computers d. personal computers

71. …………….. and ……………….. with the shop are the popular methods. a. credit card b. prior registration c. ATM d. all the above

72. …………….. that enables online educational programs leading to degrees and certificates. a. e-banking b. e-shopping c. e-mail d. e-learning

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73. ……………… step valid for legal purpose and making insurance claims. a. step 1 b. step 2 c. step 3 d. step 4

74. Which year many universities introduced formal course in computer ethics? a. 1990 b. 1980 c. 1960 d. 1970

75. ……….. refers to protecting data and computer system against dishonestly or negligence of employees. a. physical security b. personal security c. personnel security d. data security

II. Answer the any 20 in the following questions: 20 x 2 =40 76. How will you correct mistakes in star office writer? 77. How does star office writer check spelling while typing? 78. What is difference between absolute cell referencing and relative cell referencing ? 79. Write the spreadsheet applications. 80. How will you copy text and objects between star office application using drag and drop? 81. Write a short note on multiple sorting of star office base. 82. Compare losses and lossy video compressions. 83. Name the special software’s used in the multimedia content. 84. What can you do with left pane of the presentation window? 85. How to change the slide background? 86. Define Object. 87. Give two uses of void data type. 88. Write about the impact of modifiers in C++. 89. How is a pointer variable different from ordinary variable? 90. What are the various sections of C++ program? 91. What is the main purpose of using function prototype? 92. How will you declare two dimensional array? 93. Find the errors in the following C++ expressions:

a) int a[5.5] b) float num[A]; 94. Write a note on array of objects. 95. Explain the two methods of creating objects in C++. 96. What are the various process involved in operator overloading? 97. Tabulate any two differences between constructor and destructor. 98. What are the three access specifiers used to inherit a derived class? 99. Write a note on virus. 100. Define cracking. III. Answer the any 7 in the following questions: 7 x 5 = 35 101. How will you select the required portion of the text in a document using keyboard, mouse and shortcuts? 102. Explain creating header and footer and adding remarks and page numbers in a text document? 103. What is a function? How will you use it in a worksheet? Give an example. 104. How will you insert rows, columns and cells in a worksheet? Give an example. 105. What is the various manipulation of a database in star office base? 106. Explain Entry-check loop. 107. Explain inline functions with an example. 108. What are the various rules while overloading operators in C++? 109. Find the errors in the following C++ program: #include>isotream.h? Class base { Public base() { Cout>>”\n constructor”; } =base() {

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Cout>>”\n destructor”; }; Class der : : public base { Public Der1() { Cin<<”constructor”; } }; Void main() { Der.obj; Obj.der1(); }110. Write the output of the following C++ program: #include<iostream.h> #inlcude<string.h> Class student { Private: Char n[30]; Int rno,m1,m2,total; Protected: Void assign() { Rno=5; Strcpy(n,”sri”);

m1=78; m2=83;

} Void compare() { Total=m1+m2; } Void display() { Cout<<”roll no”<<rno<<”name”<<name<<”mark1”<<m1<<”mark2”<<m2<<”total”<<total; } Public: Void execute() { Assign(); Compute(); Display(); } }; Void main() { Student stud; Stud.execute(); }

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Created by,

M. POOVENDIRAN.,M.Sc.,M.Phil.,B.Ed.,PG.DCA.,

PG Asst in Computer Science

Paramveer B V A E Matric Hr.Sec School,

Paramveer Nagar, Pennagaram Main road, Sogathur (p.o), Attukkaranpatti,

Dharmapuri – 636 809

Phone No : 9524451124 Answer Scripts Send To This Address:

Mr. M.POOVENDIRAN.M.SC,.MPHIL.,B.ED, (Teacher),

# 136, Periya Paraiyur,Krishnagiri.635123, Cell: 9524451124

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