Haskell Programming MCQs With Answers

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Haskell Programming Online Quiz

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• Test Name: Haskell Programming MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Haskell Programming

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1 / 40

________ is used to perform an action with a monadic value in Haskell.

exec

run

do

2 / 40

What is the purpose of monads in Haskell?

Functional computation

Parallel computation control

Sequential computation control

3 / 40

________ is used to compose two functions in Haskell.

.

:

+

4 / 40

What does the let ... in ... construct do in Haskell?

Define global bindings

Define local bindings

Define conditional statements

5 / 40

What does the operator :: denote in Haskell?

Function composition

Type annotation

List concatenation

6 / 40

________ is used to represent an empty list in Haskell.

[null]

[]

[empty]

7 / 40

________ is a higher-order function in Haskell that applies a function to every element of a list.

filter

map

fold

8 / 40

Which operator is used for list comprehension in Haskell?

`[ x

x <- [1..10] ]`

`{ x

9 / 40

________ is a function in Haskell that combines the elements of a list using a binary operator.

join

fold

reduce

10 / 40

What is the primary benefit of Haskell's lazy evaluation?

Memory management

Efficient evaluation

Eager computation

11 / 40

What does the function const do in Haskell?

Returns a constant value

Converts to uppercase

Concatenates strings

12 / 40

Which keyword is used to define a function in Haskell?

let

func

def

13 / 40

What is the purpose of the IO monad in Haskell?

Integer operations

Immutable operations

Input/output operations

14 / 40

What is the purpose of the guard function in Haskell?

Convert types

Print debug messages

Conditionally execute monadic computations

15 / 40

________ is used to define a tuple in Haskell.

(1, "hello")

{1, "hello"}

[1, "hello"]

16 / 40

________ is a key feature of Haskell that helps prevent side effects.

Immutability

Dynamic typing

Mutable

17 / 40

What does the either function do in Haskell?

Case analysis on Either type

Concatenates two lists

Checks for equality

18 / 40

________ is a common Haskell function to apply a function to each element of a structure and concatenate the results.

flatMap

mapConcat

concatMap

19 / 40

________ is the Haskell type system feature that allows defining new types based on existing ones.

Type constructors

Type synonyms

Type classes

20 / 40

________ is a monad in Haskell for non-deterministic computations.

IO

Maybe

List

21 / 40

What is the purpose of the where keyword in Haskell?

Global definitions

Local definitions

Conditional statements

22 / 40

________ is used to define a list in Haskell.

{1, 2, 3}

[1, 2, 3]

(1, 2, 3)

23 / 40

In Haskell, which symbol is used for function application?

Dot

Space

Comma

24 / 40

What does the return function do in Haskell?

Returns from a function

Lifts a value into a monad

Creates a new variable

25 / 40

Which function is used to apply a function inside a monad to an argument outside the monad in Haskell?

<*>

#

>>=

26 / 40

Which function is used to concatenate two lists in Haskell?

++

concat

merge

27 / 40

________ is used to handle optional values in Haskell.

Either

List

Maybe

28 / 40

________ is a typeclass in Haskell that defines equality and inequality operations.

Show

Eq

Ord

29 / 40

Which function is used to convert a string to an integer in Haskell?

toInt

parse

read

30 / 40

Which function is used to read user input in Haskell?

input

readInput

getLine

31 / 40

What is the correct way to define a type synonym in Haskell?

MyType : Int

typedef MyType Int

type MyType = Int

32 / 40

Haskell is a ________ functional programming language.

Object-oriented

Pure

Imperative

33 / 40

What does the head function do in Haskell?

Retrieve element by index

Retrieve first element of a list

Retrieve last element of a list

34 / 40

What does the error function do in Haskell?

Halts program execution

Throws a runtime error

Prints a warning message

35 / 40

Which function is used to find the length of a list in Haskell?

length

count

size

36 / 40

What does the flip function do in Haskell?

Filters a list

Flips the order of arguments

Reverses a list

37 / 40

________ is used to define a typeclass in Haskell.

interface

typeclass

class

38 / 40

________ is a typeclass in Haskell for types that can be converted to a string representation.

Read

Eq

Show

39 / 40

________ is the correct way to pattern match a list in Haskell for its head and tail.

(x:xs)

(x, xs)

[x:xs]

40 / 40

What is the syntax for defining a lambda function in Haskell?

lambda x: x + 1

function (x) { return x + 1 }

x -> x + 1

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