Data Abstraction Practice Test — Class 12 Computer Science

12th Standard Computer Science — Data Abstraction: Online Practice Test

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

A.Constructors B.Destructors C.recursive D.Nested

Which of the following functions that retrieve information from the data type?

A.Constructors B.Selectors C.recursive D.Nested

The data structure which is a mutable ordered sequence of elements is called

A.Built in B.List C.Tuple D.Derived data

A sequence of immutable objects is called

A.Built in B.List C.Tuple D.Derived data

The data type whose representation is known are called

A.Built in datatype B.Derived datatype C.Concrete datatype D.Abstract datatype

The data type whose representation is unknown are called

A.Built in datatype B.Derived datatype C.Concrete datatype D.Abstract datatype

Which of the following is a compound structure?

A.Pair B.Triplet C.single D.quadrat

Bundling two values together into one can be considered as

A.Pair B.Triplet C.single D.quadrat

Which of the following allow to name the various parts of a multi-item object?

A.Tuples B.Lists C.Classes D.quadrats

Q10

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

A.Tuples B.Lists C.Classes D.quadrats

Q11

Which of the following concepts in computer science provides modularity by splitting a program into many modules?

A.Abstraction B.Concrete representation C.Iteration D.Sequence

Q12

Which of the following is an example of an abstract data type (ADT) that can be implemented using either a singly linked list or a doubly linked list?

A.List ADT B.Float datatype C.Integer datatype D.Character literal

Q13

In the city abstract data type, which function acts as the constructor to build a city object containing name, latitude, and longitude?

A.getname(city) B.getlat(city) C.getlon(city) D.makecity(name, lat, lon)

Q14

When implementing a slope abstract data type with point objects, if the selector xcoord(point) is defined as return point, what value does it retrieve?

A.The first element representing the x-coordinate B.The second element representing the y-coordinate C.The difference between coordinates D.The slope of the line

Q15

What programming design strategy involves forming beliefs and making decisions according to what is pleasing to imagine rather than appealing to reality?

A.Systematic planning B.Wishful thinking C.Concrete modeling D.Object instantiation

Q16

Why does dividing integers directly to represent a rational number lose exact precision in computer systems?

A.It produces an integer approximation B.It produces a float approximation C.It raises a divide-by-zero compiler error D.It restricts access to memory cells

Q17

If a list is defined as lst :=, which method of accessing elements unpacks the list and binds each element to a different name, such as x, y := lst?

A.Element selection operator B.Single assignment C.Multiple assignment D.Nested representation

Q18

Mathematically, a list lst containing values 10 and 20 can be represented as a set of pairs. What are the index-value pairs in this representation?

A.lst[(1, 10), (2, 20)] B.lst[(10, 0), (20, 1)] C.lst[(0, 10), (1, 20)] D.lst[(0, 20), (1, 10)]

Q19

Which compound structure provided by Python can be used to implement the mathematical concept of a 'Pair'?

A.Function or Procedure B.List or Tuple C.Class or Object D.Interface or Implementation

Q20

If the selector numer(x) for a rational number represented as a list pair x is defined as return x, what does denom(x) return?

A.return x B.return x C.return x D.return x[-1]

Q21

What is the key functional difference between a Python list and a Python tuple?

A.Lists are immutable, whereas tuples are mutable. B.Lists are mutable, whereas tuples are immutable. C.Lists use parentheses, whereas tuples use square brackets. D.Lists cannot store multiple values of different datatypes.

Q22

Why is a list representation like person := ['Padmashri', 'Baskar', '994-222-1234', 'compsci@gmail.com'] considered insufficient for complex multi-item objects?

A.It cannot store string elements B.It does not explicitly specify what each part represents C.It requires a lot of memory space D.It is immutable and cannot be modified

Q23

In Object-Oriented Programming, when a class Person is used to create an instance p1, what is the class analogously compared to?

A.A baked cookie B.A cookie cutter C.A mixing bowl D.A recipe book

Q24

What does a class define a data abstraction as, combining two key aspects together?

A.Public and private access specifiers B.Bundled data and the functions that work on that data C.Constructors and destructors of an interface D.Linked lists and binary trees

Q25

Functions defined inside a class that are designed to modify or analyze the class data are said to be what with respect to the class?

A.Independent B.Subordinate C.Constructors D.Selectors

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About this Data Abstraction test

This free online practice test covers Data Abstraction from the 12th Standard Computer Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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