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

12th Standard

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Computer Science

Time : 01:00:00 Hrs
Total Marks : 50

    Multiple Choice Questions

    50 x 1 = 50
  1. Which of the following is a distinct syntactic block?

    (a)

    Subroutines

    (b)

    Function

    (c)

    Definition

    (d)

    Modules

  2. The data type whose representation is unknown are called

    (a)

    Built in datatype

    (b)

    Derived datatype

    (c)

    Concrete datatype

    (d)

    Abstract datatype

  3. Which of the following is a compound structure?

    (a)

    Pair

    (b)

    Triplet

    (c)

    single

    (d)

    quadrat

  4. Which of the following provides modularity?

    (a)

    Datatypes

    (b)

    Subroutines

    (c)

    Classes

    (d)

    Abstraction

  5. Which of the following extract the information of the object?

    (a)

    Constructors

    (b)

    Functions

    (c)

    Selectors

    (d)

    Destructors

  6. Containers for mapping names of variables to objects is called

    (a)

    Scope

    (b)

    Mapping

    (c)

    Binding

    (d)

    Namespaces

  7. Fill up the blank in assign a variable with________to an object.

    (a)

    =

    (b)

    ! =

    (c)

    : =

    (d)

    = =

  8. Which of the following is not a searching technique?
    (i) Linear
    (ii) Binary
    (iii) Selection
    (iv) Merge

    (a)

    Only i

    (b)

    Only ii

    (c)

    Only iii

    (d)

    iii and iv

  9. 0(1) is an example of

    (a)

    best case

    (b)

    worst case.

    (c)

    Average case

    (d)

    Null casd

  10. Bubble sort is also called

    (a)

    Sequential sort

    (b)

    Quick sort

    (c)

    Half-interval sort

    (d)

    Comparison sort

  11. _______are languages that uses meaningful statements about time and space complexity?

    (a)

    Time and space trade

    (b)

    Asymptotic notations

    (c)

    Complexity notations

    (d)

    Algorithmic notations

  12. Who developed Python ?

    (a)

    Ritche

    (b)

    Guido Van Rossum

    (c)

    Bill Gates

    (d)

    Sunder Pitchai

  13. What is the output of the following snippet?
    i=1
    while True:
    if i%3 ==0:
    break
    print(i,end='')
    i +=1

    (a)

    12

    (b)

    123

    (c)

    1234

    (d)

    124

  14. Write the output for the following code:
    c=1
    def add():
    c=c+3
    print (c)
    add()

    (a)

    1

    (b)

    4

    (c)

    3

    (d)

    error

  15. Pick odd one in connection with collection data type

    (a)

    List

    (b)

    Tuple

    (c)

    Dictionary

    (d)

    Loop

  16. Functions defined inside a class:

    (a)

    Functions

    (b)

    Module

    (c)

    Methods

    (d)

    section

  17. Class members are accessed through which operator?

    (a)

    &

    (b)

    .

    (c)

    #

    (d)

    %

  18. What symbol is used for SELECT statement?

    (a)

    σ

    (b)

    Π

    (c)

    X

    (d)

    Ω

  19. Expand DBMS

    (a)

    Database memory system

    (b)

    Digital Based Management source

    (c)

    Database Management system

    (d)

    Digital Database Management system

  20. Which clause SELECT command is used to produce summary report form the database?

    (a)

    GROUP BY

    (b)

    REPORT BY

    (c)

    ORDER BY

    (d)

    WHERE BY

  21. ____________ is used for controlling privileges in the database?

    (a)

    DML

    (b)

    DCL

    (c)

    DDl

    (d)

    DQL

  22. What is the output of the following program? import csv
    d=csv.reader(open('c:\PYPRG\ch13\city.csv'))
    next(d)
    for row in d:
    print(row)
    if the file called “city.csv” contain the following details
    chennai,mylapore
    mumbai,andheri

    (a)

    chennai,mylapore

    (b)

    mumbai,andheri

    (c)

    chennai,mumba

    (d)

    chennai,mylapore 
    mumbai,andheri

  23. Which of the following can protect if the data itself contains commas in CSV file?

    (a)

    ' '

    (b)

    , ,

    (c)

    " "

  24. How many modes can be specified while opening a CSV file?

    (a)

    2

    (b)

    4

    (c)

    3

    (d)

    None of these

  25. The statement f = open ("sample.txt") equivalent to the mode

    (a)

    r

    (b)

    x

    (c)

    x or a

    (d)

    r or r+

  26. Which method returns a writer object which converts the user's data into delimited strings on the given file-like object?

    (a)

    csv.write row ( )

    (b)

    csv.write user ( )

    (c)

    csv.write ( )

    (d)

    csv.write ( )

  27. Which method is used to write all the data at once?

    (a)

    write

    (b)

    writer ( )

    (c)

    writerow ( )

    (d)

    allrow ( )

  28. The default mode in which CSV file are opened is __________.

    (a)

    Binary mode

    (b)

    Text mode

    (c)

    Process mode

    (d)

    Write mode

  29. A ________ is a string used to terminate lines produced by writer ( )

    (a)

    Line

    (b)

    Custom Delimiters

    (c)

    Line Terminator

    (d)

    Quotes

  30. The module which allows you to interface with the Windows operating system is

    (a)

    OS module

    (b)

    sys module

    (c)

    csv module

    (d)

    getopt module

  31. 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

  32. Which of the following is not a compiled statically typed language?

    (a)

    C++

    (b)

    Java

    (c)

    Python

    (d)

    All of these

  33. A scripting language requires

    (a)

    Compiler

    (b)

    Interpreter

    (c)

    Python

    (d)

    Modules

  34. MinGW expansion is

    (a)

    Minimalist Graphics for windows

    (b)

    Minimum GNU for windows

    (c)

    Minimalist GNU for Windows

    (d)

    Motion Graphics for windows

  35. Which of the following is a python module?

    (a)

    Sys

    (b)

    OS

    (c)

    Getopt

    (d)

    All of these

  36. __________ is typically interpreted language.

    (a)

    Python

    (b)

    Java

    (c)

    C++

    (d)

    None of these

  37. __________ refers to the complete path where python is installed.

    (a)

    Relative path

    (b)

    Python path

    (c)

    Absolute path

    (d)

    Directory path

  38. Which of the following is called the master table?

    (a)

    sqlite_master

    (b)

    sql_master

    (c)

    main_master

    (d)

    master_main

  39. The SQlite command opens the already created database is

    (a)

    Cursor

    (b)

    Sql-comm

    (c)

    Connect

    (d)

    Connection

  40. The SQlite clause is used to sort the data in the table is

    (a)

    SORT

    (b)

    ORDER BY

    (c)

    GROUP BY

    (d)

    ASC SORT

  41. The command to modify the values in the existing table

    (a)

    MODIFY

    (b)

    SELECT

    (c)

    UPDATE

    (d)

    CHANGE

  42. How many kinds of placeholders the SQlite3 module supports

    (a)

    1

    (b)

    2

    (c)

    3

    (d)

    5

  43. _________ is a simple relational database system.

    (a)

    Cython

    (b)

    Boost

    (c)

    MySQL

    (d)

    SQlite

  44. All the SQlite commands will be executed using _______ object

    (a)

    connect

    (b)

    cursor

    (c)

    CSV

    (d)

    python

  45. The numerical data is encoded using

    (a)

    dots

    (b)

    lines

    (c)

    bars

    (d)

    all of these

  46. Which of the following translate complex ideas and concepts into a simple visual format?
    (i) Data visualization
    (ii) Dashboards
    (iii) Tables
    (iv) Maps

    (a)

    i,iii

    (b)

    iii, i

    (c)

    i, iv

    (d)

    i, ii

  47. Which button allows to configure various spacing options with figure?

    (a)

    configure plots

    (b)

    configure subplots

    (c)

    subplots configure

    (d)

    plots configure

  48. The different kinds of plot created using

    (a)

    Matplotlib

    (b)

    Matplot

    (c)

    Plotlib

    (d)

    Matliplot

  49. In which plot the width of the bars is always same?

    (a)

    Line

    (b)

    Bar chat

    (c)

    Pie chart

    (d)

    Histogram

  50. ______ in data visualization helps to show relationship in the data for more variables

    (a)

    Tables

    (b)

    Graphics

    (c)

    Charts

    (d)

    Dashboards

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