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12th Standard Computer Science English Medium All Chapter Book Back and Creative One Mark Question 2020

Published on: 09/03/2020

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Questions:

Multiple Choice Question

64 x 1 = 64

What will be the output of print (len("CHENNAI"))?

(a)

(b)

(c)

(d)

Error

The _______ keyword is used along with the SELECT command to eliminate duplicate rows in the table?

(a)

DUPLICATE

(b)

DISTINCT

(c)

ELIMINATE

(d)

a ro b

The ______ operator is used to append a new string with an excisting string.

(a)

(b)

+ =

(c)

* =

(d)

+ +

Which of the following is not a category of SQL command?

(a)

DDL

(b)

DDL

(c)

DML

(d)

TCL

The default x.vector has the same length of y but starts with

(a)

(b)

(c)

(d)

The numerical data is encoded using

(a)

dots

(b)

lines

(c)

bars

(d)

all of these

________ has a native library of SQlite.

(a)

Python

(b)

C++

(c)

Java

(d)

Which of fhe following is not a type of data model?

(a)

Hierarchical model

(b)

Entity Relationship model

(c)

Object model

(d)

Redundancey model

Which of the following in a table represents a record?

(a)

Row

(b)

Column

(c)

File

(d)

Data

10.

Which values cannot be counted?

(a)

Integer

(b)

String

(c)

Float

(d)

Null

11.

print (ord('A') displays

(a)

(b)

(c)

(d)

12.

Functions that calls itself are known as

(a)

User defined

(b)

Recursive

(c)

Built-in

(d)

Lambda

13.

___________ module of python helps you to split command line options and arguments.

(a)

(b)

Getopt

(c)

Sys

(d)

All of these

14.

Constructor must begin and with double _________

(a)

Colon

(b)

Semicolon

(c)

Dot

(d)

Underscore

15.

Which of the following is a scripting language?

(a)

Ruby

(b)

ASP

(c)

TCI

(d)

All of these

16.

Which of the following is a valid private variable in python?

(a)

- i

(b)

.i -

(c)

- - i

(d)

i - -

17.

A loop placed within another loop is called as ____ loop structure.

(a)

entry check

(b)

exit check

(c)

nested

(d)

conditional

18.

How many ways are there to write a new or modify the existing CSV file?

(a)

(b)

(c)

(d)

19.

Find the odd man out

(a)

Branching

(b)

looping

(c)

sequential

(d)

Condition

20.

Tuples are enclosed with ________________

(a)

[ ]

(b)

{ }

(c)

( )

(d)

< >

21.

In CSV file, each record is to be located on a separate line, delimited by a line break by pressing

(a)

Enter key

(b)

ESV key

(c)

Tab key

(d)

Shift key

22.

Write the output for the following.
Tu = {1, 2, 4, 4, 5, 6}
print (Tu (4))

(a)

4,5,6

(b)

(c)

5,6

(d)

4,4,5,6

23.

Which of the following algorithm finds the position of a search element within a sorted array?

(a)

Binary search

(b)

Linear search

(c)

Sequential search

(d)

List search

24.

Which of the following is not an example of data structures?

(a)

Control statement

(b)

Structure

(c)

List

(d)

Dictionary

25.

By default, the C++ and Java class members are

(a)

Private

(b)

Protected

(c)

Public

(d)

Local

26.

Which of the following members of a class are denied access from outside the class?

(a)

Private

(b)

Protected

(c)

Public

(d)

Enclosed

27.

Which of the following date includes decimal point?

(a)

Character

(b)

String

(c)

Boolean

(d)

Floating point

28.

In Python, How many ways programs can be written?

(a)

(b)

(c)

(d)

many

29.

Tuple is constructed by using ______ and________

(a)

( )

(b)

[ ]

(c)

(d)

{}

30.

How many values can be stared in the list?

(a)

(b)

(c)

100

(d)

Multiple

31.

Explicitly_________the types can help with debugging.

(a)

defining

(b)

annotating

(c)

informing

(d)

computing

32.

In which type of function the return type is solely depends on its argument passed?

(a)

pure

(b)

impure

(c)

parameterized

(d)

monochromatize

33.

To install matplotlib, the following function will be typed in your command prompt. What does “-U”represents?
Python –m pip install –U pip

(a)

downloading pip to the latest version

(b)

upgrading pip to the latest version

(c)

removing pip

(d)

upgrading matplotlib to the latest version

34.

Which is a python package used for 2D graphics?

(a)

matplotlib.pyplot

(b)

matplotlib.pip

(c)

matplotlib.numpy

(d)

matplotlib.plt

35.

Which of the following is a control structure used to traverse and fetch the records of the database?

(a)

Pointer

(b)

Key

(c)

Cursor

(d)

Insertion point

36.

SQLite falls under which database system?

(a)

Flat file database system

(b)

Relational Database system

(c)

Hierarchical database system

(d)

Object oriented Database system

37.

Which of the following can be used for processing text, numbers, images, and scientific data?

(a)

HTML

(b)

(c)

C++

(d)

PYTHON

38.

Which of the following is a software design technique to split your code into separate parts?

(a)

Object oriented Programming

(b)

Modular programming

(c)

Low Level Programming

(d)

Procedure oriented Programming

39.

Which of the following is a string used to terminate lines produced by writer()method of csv module?

(a)

Line Terminator

(b)

Enter key

(c)

Form feed

(d)

Data Terminator

40.

The command used to skip a row in a CSV file is

(a)

next()

(b)

skip()

(c)

omit()

(d)

bounce()

41.

The clause used to sort data in a database

(a)

SORT BY

(b)

ORDER BY

(c)

GROUP BY

(d)

SELECT

42.

Queries can be generated using

(a)

SELECT

(b)

ORDER BY

(c)

MODIFY

(d)

ALTER

43.

Relational database model was first proposed by

(a)

E F Codd

(b)

E E Codd

(c)

E F Cadd

(d)

E F Codder

44.

Which database model represents parent-child relationship?

(a)

Relational

(b)

Network

(c)

Hierarchical

(d)

Object

45.

The process of creating an object is called as:

(a)

Constructor

(b)

Destructor

(c)

Initialize

(d)

Instantiation

46.

Which of the following is the private class variable?

(a)

__num

(b)

##num

(c)

$$num

(d)

&&num

47.

What is the use of type() function in python?

(a)

To create a Tuple

(b)

To know the type of an element in tuple.

(c)

To know the data type of python object

(d)

To create a list.

48.

If List=[17,23,41,10] then List.append(32) will result

(a)

[32,17,23,41,10]

(b)

[17,23,41,10,32]

(c)

[10,17,23,32,41]

(d)

[41,32,23,17,10]

49.

What will be the output of the following code?
str1 = "Chennai Schools"
str1[7] = "-"

(a)

Chennai-Schools

(b)

Chenna-School

(c)

Type error

(d)

Chennai

50.

Which of the following is the output of the following python code?
str1="TamilNadu"
print(str1[::-1])

(a)

Tamilnadu

(b)

Tmlau

(c)

udanlimaT

(d)

udaNlimaT

51.

Which of the following keyword is used to exit a function block?

(a)

define

(b)

return

(c)

finally

(d)

def

52.

Which function is called anonymous un-named function?

(a)

Lambda

(b)

Recursion

(c)

Function

(d)

define

53.

What is the output of the following snippet?
T=1
while T:
print(True)
break

(a)

False

(b)

True

(c)

(d)

54.

What plays a vital role in Python programming?

(a)

Statements

(b)

Control

(c)

Structure

(d)

Indentation

55.

The Θ notation in asymptotic evaluation represents

(a)

Base case

(b)

Average case

(c)

Worst case

(d)

NULL case

56.

The complexity of linear search algorithm is

(a)

O(n)

(b)

O(log n)

(c)

O(n2)

(d)

O(n log n)

57.

This symbol is used to print more than one item on a single line.

(a)

Semicolon(;)

(b)

Dollor($)

(c)

comma(,)

(d)

Colon(:)

58.

Which of the following character is used to give comments in Python Program?

(a)

(b)

(c)

(d)

59.

The process of binding a variable name with an object is called

(a)

Scope

(b)

Mapping

(c)

late binding

(d)

early binding

60.

Which of the following refers to the visibility of variablesin one part of a program to another part of the same program.

(a)

Scope

(b)

Memory

(c)

Address

(d)

Accessibility

61.

Which of the following is constructed by placing expressions within square brackets?

(a)

Tuples

(b)

Lists

(c)

Classes

(d)

quadrats

62.

Which of the following functions that build the abstract data type?

(a)

Constructors

(b)

Destructors

(c)

recursive

(d)

Nested

63.

Which of the following carries out the instructions defined in the interface?

(a)

Operating System

(b)

Compiler

(c)

Implementation

(d)

Interpreter

64.

Which of the following is a unit of code that is often defined within a greater code structure?

(a)

Subroutines

(b)

Function

(c)

Files

(d)

Modules

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Answers Key:

Multiple Choice Question

64 x 1 = 64

(a)
7

(b)
DISTINCT

(b)
+ =

(a)
DDL

(d)
0

(d)
all of these

(a)
Python

(d)
Redundancey model

(a)
Row

10.

(d)
Null

11.

(a)
65

12.

(b)
Recursive

13.

(b)
Getopt

14.

(d)
Underscore

15.

(d)
All of these

16.

17.

18.

(a)
8

19.

(d)
Condition

20.

(a)
[ ]

21.

(a)
Enter key

22.

23.

(a)
Binary search

24.

(a)
Control statement

25.

(a)
Private

26.

(a)
Private

27.

(d)
Floating point

28.

29.

(a)
( )

30.

(d)
Multiple

31.

(b)
annotating

32.

(a)
pure

33.

(b)
upgrading pip to the latest version

34.

(a)
matplotlib.pyplot

35.

36.

(b)
Relational Database system

37.

(d)
PYTHON

38.

(b)
Modular programming

39.

(a)
Line Terminator

40.

(a)
next()

41.

(b)
ORDER BY

42.

(a)
SELECT

43.

(a)
E F Codd

44.

45.

(d)
Instantiation

46.

(a)
__num

47.

48.

(b)
[17,23,41,10,32]

49.

50.

(d)
udaNlimaT

51.

(b)
return

52.

(a)
Lambda

53.

(b)
True

54.

(d)
Indentation

55.

(b)
Average case

56.

(a)
O(n)

57.

58.

(a)
#

59.

(b)
Mapping

60.

(a)
Scope

61.

(b)
Lists

62.

(a)
Constructors

63.

64.

(b)
Function

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