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1 COMPUTER SCIENCE Prepared By R.PRADEEP M.C.A., B.Ed.,
http://www.trbtnpsc.com/2014/10/how-to-get-centum-in-12th-and-10th.html
PADASALAI.NET’S CENTUM COACHING TEAM
SPECIAL QUESTION PAPER – (2016-17) CLASS: XII TIME : 3 HRS.
SUB: COMPUTER SCIENCE MARKS : 150 PART - I
Choose the correct answer: 75X1=75
1. Which key is pressed down and the movement keys are used to highlight the required text?
a) Shift b) Alt c) Ctrl d) Ctrl + Shift
2. Which bar gives the information about the current mode?
a) Title bar b) Scroll bar c) Status bar d) Menu bar
3. The default alignment of Star Office Writer is
a) Center b) Left c) Justify d) Right
4. Which of the following helps in providing the document more readability?
a) Formatting b) Indentation c) Highlighting d) Selection
5. Which of the following feature is used to compare each word typed with the words in the dictionary?
a) Spell check b) Auto format c) Auto correct d) Auto spell check
6. Which command is used to insert floating toolbar in a Star Office Writer document?
a) TableInsert b) ViewInsert table c) ToolsInsertTable d) ViewInsert
7. In a table, when the text is wrapped in a cell, it grows
a) Wider b) Smaller c) Expand d) Taller
8. The default margins are __________ left and right margins and _________ top and bottom margins.
a) 1.25”, 1” b) 1.25”, 1.25” c) 1”, 1.5” d) 1”, 1.25”
9. Which option on the file menu can be used to see the changes in the document?
a) Page view b) Print view c) Page preview d) View page
10. “Lotus 1 – 2 – 3” was developed in year
a) 1982 b) 1928 c) 1988 d) 1882
11. _______ operators return either true or false.
a) Text b) Arithmetic c) Comparative d) Reference
12. In Spreadsheet ____ icon will display the contents of the selected cells in default format.
a) Percent b) Standard c) Currency d) Add decimal
13. To remove the print range setting select _________ command.
a) Format Delete b) Format Delete range
c) Format Print ranges Delete d) Format Print range
14. To separate two different sheets in a formula ___________ is used.
a) colon b) hyphen c) semicolon d) comma
15. A grid of cells with a programmable calculator attached to each cell is a
a) Computer b) Data sheet c) Spreadsheet d) Visible calculator
16. How many cells are available in worksheet range C2:E4?
a) 3 b) 6 c) 9 d) 12
17. A screen that displays data for a single record is called ______
a) Form b) Report c) Query d) Filter
18. Which option specifies the user should enter a value for that field?
a) Length b) Default value c) Format d) Entry required
19. In the case ______ decimal values up to the length of 14 places.
a) Small int b) Byte c) Double precision d) Single precision
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2 COMPUTER SCIENCE Prepared By R.PRADEEP M.C.A., B.Ed.,
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20. Which icon is used to display records which match the value of the current field?
a) Filter b) Default filter c) Standard filter d) Auto filter
21. The biggest asset of DBMS is _____
a) Searching b) Retrieval c) Quick access d) Both b & c
22. If you want to transfer each heading together with its accompanying paragraphs, select the command
a) File Send Outline to presentation b) File Insert AutoAbstract to Presentation
c) File Insert Outline to presentation d) File Send AutoAbstract to Presentation
23. How many steps are there in the report wizard window?
a) 5 b) 6 c) 7 d) 8
24. Which is defined by its characteristics, attributes and procedures?
a) Data b) Information c) Object d) Form
25. Sorting more than one field of table at the same time is called as
a) Many sorting b) Sorting c) Multiple sorting d) Sort multiple
26. Which of the following are typical examples of static images?
a) Shockwave files b) Bitmap images c) MPEG files d) Photographs
27. How many color depth results in the image looking murky?
a) <20 b) <15 c) <256 d) < 265
28. Which of the followings are the attributes control the characteristics of sound?
a) Frequency and lossless b) Modulation and amplitude
c) Frequency and modulation d) Amplitude and frequency
29. Which of the following sound format is used for transferring music information between electronic
music devices? a) AIFF b) AU c) MPEG d) MIDI
30. Wave format was developed by
a) Microsoft b) IBM c) Apple d) IBM and Microsoft
31. Which window allows us to quickly jump from one slide to other slide or move between open files?
a) Explorer b) Navigator c) Custom slide d) Styles
32. To change the slide order click the ________ option in the switching presentation view
a) View b) Slide sorter c) Custom slide show d) Slide show
33. On pressing which icon the document will be printed according to printer default settings without a
dialog appearing.
a) selection b) print pages c) print file directly d) print file
34. A presentation can be created from scratch or from
a) new presentation b) using a template c) existing presentation d) none of these
35. Range of slides can be selected using the following key
a) shift b) tab c) ctrl d) alt
36. Which statement provided a way of instructing the computer the operations to be performed on the
data item
a) input b) declaration c) assignment d) control
37. Which makes it easy to represent real system in software programs?
a) Object b) Polymorphism c) Encapsulation d) Abstraction
38. Which of the following cannot be used as normal identifier?
a) Punctuators b) Variables c) Keywords d) Constants
39. A sequence of digits starting with 0x is treated as
a) Decimal integer b) Binary integer c) Octal integer d) Hexadecimal integer
40. Which variable retains the last value assigned?
a) auto b) static c) extern d) register
41. int a,b,c; a=8; b=3; c=a/b; c=++c; cout<<c; What is the value of c when the following snippet is
executed?
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3 COMPUTER SCIENCE Prepared By R.PRADEEP M.C.A., B.Ed.,
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a) 1 b) 2 c) 3 d) 4
42. In order to exit from switch statement which statement is used?
a) continue b) case c) break d) exit
43. Which comprises of the combined properties of istream.h and ostream.h?
a) ostream.h b) stdio.h c) conio.h d) iostream.h
44. When a program is executed which function will be automatically executed?
a) Derived b) Built-in c) Main d) User defined
45. How many classifications of loops based on the position of the condition?
a) two b) three c) four d) many
46. In nested loop, same control variable will lead to
a) System error b) Logical error c) Compiler error d) Execution error
47. Which are the executable segments in a program?
a) Data types b) Statements c) Functions d) Keywords
48. Which are provided to the compiler by the prototype?
a) number of argument b) type of argument c) both a and b d) data type
49. The default values can be included in the function prototype from
a) right to top b) left to right c) top to bottom d) right to left
50. The data flows from call statement to function by using
a) Data type b) Function name c) Parameters d) Operators
51. If string1 is greater than string2, strcmp() returns
a) >0 b) =0 c) <0 d) ‘\0’
52. Which parameter passed only by identifier, ignoring dimensions?
a) Static b) Pointers c) Arrays d) Enum
53. To treat spaces as a part of string literal one has to use
a) gets() b) cin c) getline d) Either a or c
54. The members of the class can be accessed using the operator
a) plus b) dot c) scope resolution d) conditional
55. class simple { int m, n; char p; float c; } s1; The number of bytes occupied by s1 is
a) 5 b) 7 c) 9 d) 11
56. Memory space required for __________ are allocated separately for each object.
a) Methods b) Member functions c) Data members d) Both b & c
57. Which of the following provide a method for packing together data of different types?
a) Arrays b) Classes c) Pointers d) Functions
58. Which is referred as key features of Object Oriented Programming?
a) Data hiding b) Encapsulation c) Data members d) Overloading
59. Which operator is used to define function outside a class?
a) ; b) : c) :: d) .
60. Which of the following is one of the facets of C++ that supports object oriented programming?
a) Function overloading b) Operator overloading
c) Data hiding d) Encapsulation
61. Which data type can be converted to integer/float/double in integral promotion?
a) float b) double c) long d) char
62. Which function is used for string concatenation?
a) strcmp() b) strconcat() c) strcpy() d) strcat()
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4 COMPUTER SCIENCE Prepared By R.PRADEEP M.C.A., B.Ed.,
http://www.trbtnpsc.com/2014/10/how-to-get-centum-in-12th-and-10th.html
63. Which one of the following is automatically executed when an object is created?
a) constructor b) destructor c) friend d) inline
Read the following C++ snippet and answer question no. 60 to 62.
class sample
{ int x;
public:
sample()
{ x=6;
}
} sample1[5];
64. What is the name of the constructor?
a) public b) sample1 c) main d) sample
65. What type of constructor is used in this snippet?
a) parameterized b) non-parameterized c) copy d) defined
66. How many objects are created?
a) 0 b) 1 c) 5 d) 6
67. Which form of inheritance is reflected by the transitive nature of inheritance?
a) single b) multiple c) multilevel d) hybrid
68. The default visibility mode of the constructor is
a) Public b) Private c) Local d) Protected
69. Which is power packed?
a) Base class b) Abstract class c) Derived class d) Multiple base class
70. A facility that allows the user to speak into a special device is called
a) Computer b) E-mail c) Dictaphone d) Archive unit
71. Which permits banking from the comfort of the home by using internet facility?
a) e-banking b) e-shopping c) e-governance d) e-commerce
72. Which are the two important aspects of ITES provider?
a) Data security and customer privacy b) Data management and customer privacy
c) Data management and service d) Data management and security
73. Which facilitates long term preservation of the document?
a) Digitization b) Data management c) Date entry d) Data security
74. Which of the following security refers to the protection of hardware?
a) Physical b) Personal c) Personnel d) Data
75. The period in which Donn Parker began to examine un ethical and illegal uses of computer?
a) 1970’s b) 1980’s c) 1960’s d) 1990’s
PART – II
Answer any twenty questions in one or two sentences each: 7x5=35
76. Write the difference between copying text and moving text in Star Office Writer.
77. What is meant by header? How will you insert a page number in the footer area?
78. Write about the types of cell referencing.
79. How will you change the row height and column width in a spreadsheet?
80. How flat file database differs from relational database?
81. How will you copy text and objects between Star Office applications using Drag-and-drop?
82. What is a plug-in? What is its advantage?
83. Compare loss less and lossy video compressions.
84. List and describe the features of Star Office Impress.
85. How will you customize a presentation?
86. How polymorphism different from inheritance?
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87. Write about enumerated data type.
88. Write the reasons for grouping the data into different categories?
89. What is typecast? Write its syntax with an example.
90. What is extraction or get from operator? Write example.
91. What are the rules for actual parameters?
92. What will be the output of the following program?
#include<iostream.h>
void main()
{
int a[]={1,2,3,4,5};
for(int i=0;i<4;i++)
a[i+1]=a[i];
for(i=0;i<5;i++)
cout<<’\n’<<a[i]; }
93. Write a note on array of strings.
94. Explain the methods of creating objects.
95. Write a note on members of a class.
96. What are the various process involved in operator overloading?
97. Tabulate any four differences between constructor and destructor.
98. What is accessibility?
99. How are the computers used in the educational area?
100. What is the use of call centers?
PART – III
Answer any seven questions in five to ten sentences each: 7x5=35
101. How will you indent a given text by using paragraph dialog box?
102. Draw and explain the various functions of the icons in the table formatting tool bar.
103. List and describe the other features available with spreadsheet software in addition to ability to
calculate numbers.
104. How can we generate the series of values? Explain with an example.
105. What is query? Write the steps involved in generating a query.
106. Discuss about the general working of for loop in C++.
107. Explain call by value method with a n example.
108. What are the various rules for function overloading and operator overloading.
109. Debug the following C++ program.
#include<iostream.h>
#include<conio.h>
Class simple
{ private:
int a,b
public
~simple()
{
a=0; b=0;
cout>>”\nConstructor of class-simple”;
}
simple()
{
cout<<”\nDestructor of class-simple”;
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6 COMPUTER SCIENCE Prepared By R.PRADEEP M.C.A., B.Ed.,
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}
void getdata()
{
Cout<<”\nEnter values for a and b”;
cin<<a<<b;
}
void putdata()
{
Cout<<”\nTwo integers ......”<<a<<’\t’b;
Cout<<”\nThe sum of the variables ......”<<a+b;
};
void main()
{ simple s;
S.getdata();
S.putdata();
}
110. Find the output of the following C++ program.
#include<iostream.h>
#include<conio.h>
class base
{
public:
base()
{
cout<<”\nConstructor of base class …”;
}
~base()
{
cout<<”\nDestructor of base class…”;
}
};
class derived1 : public base
{
public :
derived1()
{
cout<<”\nConstructor of derived1.”;
}
~derived1()
{
cout<<”\nDestructor of derived1.”;
}
};
class derived2 : public base
{
public :
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7 COMPUTER SCIENCE Prepared By R.PRADEEP M.C.A., B.Ed.,
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derived2()
{
cout<<”\nConstructor of derived2 …”;
}
~derived2()
{
cout<<”\nDestructor of derived2 …”;
}
};
void main()
{
derived1 x;
}
Prepared by,
R.Pradeep M.C.A., B.Ed., PG Asst in Computer Science, Lotus Matric Hr Sec School, Kakapalayam (Po), Salem – 637504. Send your answer scripts to R.Pradeep M.C.A., B.Ed., PG Asst in Computer Science, Lotus Matric Hr Sec School, Kakapalayam (Po), Salem – 637504. Mobile : 9003729219
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