12th Standard English Medium Computer Science Reduced Syllabus One mark Important Questions With Answer Key - 2021(Public Exam ) | QB365

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12th Standard English Medium Computer Science Reduced Syllabus One mark Important Questions With Answer Key - 2021(Public Exam )

Published on: 27/02/2021

Download Tamil Nadu 12th Standard Computer Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

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Std: 12th Standard - Computer Science

chapter: - Model Question paper

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Questions:

Multiple Choice Question

50 x 1 = 50

After the database has been created, the data can be manipulated using ___________ procedures.

(a)

TCL

(b)

DCL

(c)

DQL

(d)

DML

Which keyword is used to divide the table into groups?

(a)

DIVIDE BY

(b)

ORDER BY

(c)

GROUP BY

(d)

HAVING

Which command is used to retrieve a subset of records from one or more tables?

(a)

QUERY

(b)

SUBSET

(c)

SET

(d)

SELECT

In the INSERT command the fields that are omitted will have

(a)

default value

(b)

Null value

(c)

No value

(d)

a or b

Which of the following ensures the accuracy and reliability of the data in the database?

(a)

Constraint

(b)

Table

(c)

Classes

(d)

Data types

________ is a software application for the interaction between users and the databases.

(a)

CSV

(b)

Python

(c)

DBMS

(d)

Sys

cursor.description will be stored as a

(a)

list

(b)

set

(c)

tuple

(d)

dictionary

Which of the following is a command to open the already created database from the statement connection = sqlite3.connect ("ABC.db")

(a)

ABC.db

(b)

connect

(c)

SQlite3

(d)

connection

_________ is a software design technique to split the code into separate parts.

(a)

Procedural programming

(b)

Structural programming

(c)

Object Oriented Programming

(d)

Modular Programming

10.

_________ is a program that calls GCC for linking the c++ library files to the object code.

(a)

c++

(b)

(c)

Python

(d)

g++

11.

Which of the following is not a python module?

(a)

(b)

Sys

(c)

Tel

(d)

Getopt

12.

CSV file name ________ can be represented in the open command using

(a)

" "

(b)

' '

(c)

",,,, ",,,,

(d)

a or b

13.

Which of the following class of CSV file module is used to write CSV file with quotes by registering new dialects?

(a)

csv.register ( )

(b)

csv.dialeet ( )

(c)

csv.dialect register ( )

(d)

csv.register_dialeet ( )

14.

Which of the following is not a format in which CSV file data can be read?

(a)

Quotes

(b)

Pipe

(c)

Semi colon

(d)

Comma

15.

Which of the following is a human readable text file where each line has fields?

(a)

CSV file

(b)

CSV module

(c)

CSV sheet

(d)

CSV text

16.

Which sorting techniques working by taking elements from the list one by one and inserting them in their correct position into a new sorted list?

(a)

Bubble

(b)

Selection

(c)

Merge

(d)

Insertion

17.

Which of the following should be written for the selected programming language with specific syntax?

(a)

Algorithm

(b)

Pseudocode

(c)

Process

(d)

Program

18.

In Object Oriented Programming Language security is implanted through_______

(a)

Access modifiers

(b)

Access modules

(c)

Access variables

(d)

Keywords

19.

How many types of variable scope are there?

(a)

(b)

(c)

(d)

20.

A ________ is a comma separated values surround with parentheses.

(a)

List

(b)

Tuple

(c)

Set

(d)

Dictionary

21.

List can also be called as

(a)

Functions

(b)

Class

(c)

Structure

(d)

Pairs

22.

Which of the following is a type for objects whose behavior is defined by a set of value and a set of operations?

(a)

User-defined datatype

(b)

Derived datatype

(c)

Built-in datatype

(d)

Abstract datatype

23.

Which of the following is an instance created from the class?

(a)

parameter

(b)

function

(c)

subroutines

(d)

object

24.

Identify the package manager for Python packages, or modules.

(a)

Matplotlib

(b)

PIP

(c)

plt.show()

(d)

python package

25.

Which of the following is called the master table?

(a)

sqlite_master

(b)

sql_master

(c)

main_master

(d)

master_main

26.

Identify the function call statement in the following snippet.
if __name__ =='__main__':
main(sys.argv[1:])

(a)

main(sys.argv[1:])

(b)

__name__

(c)

__main__

(d)

argv

27.

getopt() will return an empty array if there is no error in splitting strings to

(a)

argv variable

(b)

opt variable

(c)

args variable

(d)

ifile variable

28.

A framework for interfacing Python and C++ is

(a)

Ctypes

(b)

SWIG

(c)

Cython

(d)

Boost

29.

Importing C++ program in a Python program is called

(a)

wrapping

(b)

Downloading

(c)

Interconnecting

(d)

Parsing

30.

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

31.

Which of the following mode is used when dealing with non-text files like image or exe files?

(a)

Text mode

(b)

Binary mode

(c)

xls mode

(d)

csv mode

32.

Which of the following module is provided by Python to do several operations on the CSV files?

(a)

(b)

xls

(c)

csv

(d)

33.

Queries can be generated using

(a)

SELECT

(b)

ORDER BY

(c)

MODIFY

(d)

ALTER

34.

Who is called Father of Relational Database from the following?

(a)

Chris Date

(b)

Hugh Darween

(c)

Edgar Frank Codd

(d)

Edgar Frank Cadd

35.

Which database model represents parent-child relationship?

(a)

Relational

(b)

Network

(c)

Hierarchical

(d)

Object

36.

Functions defined inside a class:

(a)

Functions

(b)

Module

(c)

Methods

(d)

section

37.

Which of the following Python function can be used to add more than one element within an existing list?

(a)

append()

(b)

append_more()

(c)

extend()

(d)

more()

38.

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]

39.

If List=[10,20,30,40,50] then List[2]=35 will result

(a)

[35,10,20,30,40,50]

(b)

[10,20,30,40,50,35]

(c)

[10,20,35,40,50]

(d)

[10,35,30,40,50]

40.

Which of the following formatting character is used to print exponential notation in upper case?

(a)

(b)

(c)

(d)

41.

Pick the correct one to execute the given statement successfully.
if ____ : print(x, " is a leap year")

(a)

x%2=0

(b)

x%4==0

(c)

x/4=0

(d)

x%4=0

42.

While defining a function which of the following symbol is used.

(a)

; (semicolon)

(b)

. (dot)

(c)

: (colon)

(d)

$ (dollar)

43.

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

(a)

define

(b)

return

(c)

finally

(d)

def

44.

The condition in the if statement should be in the form of

(a)

Arithmetic or Relational expression

(b)

Arithmetic or Logical expression

(c)

Relational or Logical expression

(d)

Arithmetic

45.

In dynamic programming, the technique of storing the previously calculated values is called ?

(a)

Saving value property

(b)

Storing value property

(c)

Memoization

(d)

Mapping

46.

Time complexity of bubble sort in best case is

(a)

θ (n)

(b)

θ (nlogn)

(c)

θ (n2)

(d)

θ (n(logn) 2)

47.

Containers for mapping names of variables to objects is called

(a)

Scope

(b)

Mapping

(c)

Binding

(d)

Namespaces

48.

The functions which will give exact result when same arguments are passed are called

(a)

Impure functions

(b)

Partial Functions

(c)

Dynamic Functions

(d)

Pure functions

49.

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

(a)

Operating System

(b)

Compiler

(c)

Implementation

(d)

Interpreter

50.

Which of the following defines what an object can do?

(a)

Operating System

(b)

Compiler

(c)

Interface

(d)

Interpreter

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Answers Key:

Multiple Choice Question

50 x 1 = 50

(d)
DML

(d)
SELECT

(b)
Null value

(a)
Constraint

(b)
connect

(d)
Modular Programming

10.

(d)
g++

11.

12.

(d)
a or b

13.

(d)
csv.register_dialeet ( )

14.

15.

(a)
CSV file

16.

(d)
Insertion

17.

(d)
Program

18.

(a)
Access modifiers

19.

(b)
4

20.

(b)
Tuple

21.

(d)
Pairs

22.

(d)
Abstract datatype

23.

(d)
object

24.

(b)
PIP

25.

(a)
sqlite_master

26.

(a)
main(sys.argv[1:])

27.

(a)
argv variable

28.

(d)
Boost

29.

(a)
wrapping

30.

(a)
Line Terminator

31.

(b)
Binary mode

32.

33.

(a)
SELECT

34.

35.

36.

37.

38.

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

39.

40.

(b)
%E

41.

(b)
x%4==0

42.

43.

(b)
return

44.

45.

46.

(a)
θ (n)

47.

(d)
Namespaces

48.

(d)
Pure functions

49.

50.

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