Function Practice Test — Class 12 Computer Science

12th Standard Computer Science — Function: Online Practice Test

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The small sections of code that are used to perform a particular task is called

A.Subroutines B.Files C.Pseudo code D.Modules

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

Which of the following is a distinct syntactic block?

A.Subroutines B.Function C.Definition D.Modules

The variables in a function definition are called as

A.Subroutines B.Function C.Definition D.Parameters

The values which are passed to a function definition are called

A.Arguments B.Subroutines C.Function D.Definition

Which of the following are mandatory to write the type annotations in the function definition?

A.{ } B.( ) C.[ ] D.< >

Which of the following defines what an object can do?

A.Operating System B.Compiler C.Interface D.Interpreter

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

A.Operating System B.Compiler C.Implementation D.Interpreter

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

Q10

The functions which cause side effects to the arguments passed are called

A.impure function B.Partial Functions C.Dynamic Functions D.Pure functions

Q11

Which of the following is true about definitions in function specifications?

A.Definitions are expressions. B.Expressions are treated as definitions. C.Definitions are distinct syntactic blocks. D.Definitions cannot have nested expressions.

Q12

What does the type signature x1 -> x2 -> y indicate in function types?

A.A function that takes one input of type x1 and returns x2 and y. B.A function that takes two inputs of types x1 and x2, and returns an output of type y. C.A function that takes an input of type y and maps it to x1 and x2. D.A recursive function with two base cases of types x1 and x2.

Q13

When writing explicit type annotations for parameters in a function definition, which of the following is mandatory?

A.Square brackets [ ] B.Curly braces { } C.Parentheses ( ) D.Angle brackets < >

Q14

Which keyword must accompany let to define a recursive function?

A.recur B.rec C.repeat D.loop

Q15

Why is the function strlen considered a pure function in programming?

A.It modifies the string passed to it during execution. B.It returns a random value each time it is called. C.It only reads the external memory of the string to find its length without modifying it. D.It depends on global variables that change dynamically.

Q16

If a compiler compiles a loop containing several calls to a pure function like strlen(s) where s is not updated, what optimization can a smart compiler perform?

A.Convert the pure function into an impure function. B.Force the loop to run indefinitely. C.Remove redundant calls and execute the function only once. D.Ignore the function call completely.

Q17

Which of the following is an example of a side effect that makes a function impure?

A.Returning the square of an input integer. B.Calculating the greatest common divisor of two numbers. C.Modifying a variable that resides outside the function's scope. D.Performing a mathematical sine calculation on a constant value.

Q18

In the Chameleons of Chromeland problem, if the initial numbers of chameleons of types A, B, and C are 4, 4, and 6 respectively, what is the final number of chameleons of the third type after all have been monochromatized?

A.10 B.12 C.14 D.8

Q19

Which of the following statements is true regarding function definitions in the context of the textbook?

A.Functions can be defined both statically and dynamically. B.All functions are static definitions, and there are no dynamic function definitions. C.Recursive functions are always dynamic definitions. D.Functions can only be defined inside other functions dynamically.

Q20

In Object-Oriented Programming, how do we refer to the template that specifies the interfaces to enable an object to be created and operated?

A.Subroutine template B.Class template C.Syntactic block D.Parameter specification

Q21

In the recursive definition of the greatest common divisor: let rec gcd a b := if b <> 0 then gcd b (a mod b) else return a, which statement or part handles the termination of the recursion?

A.let rec gcd a b B.then gcd b (a mod b) C.if b <> 0 D.else return a

Q22

What does the term "wishful thinking" refer to in the strategy of designing programs?

A.Delaying the coding of the entire program until the final exam. B.Assuming the existence of constructors and selectors before defining their concrete implementation. C.Hoping that the compiler will automatically fix syntax errors without debugging. D.Expecting an impure function to behave like a pure function.

Q23

Consider the following code segment: y := 0 let inc (x: int): int := y := y + x return (y) What is the side effect of calling the inc function?

A.It returns an incorrect integer sum. B.It requires mandatory parentheses for type annotations. C.It changes the value of the externally visible variable y. D.It recursively calls itself until y is zero.

Q24

Which of the following is true about pure and impure functions regarding their argument modification?

A.Pure functions modify the arguments passed to them, whereas impure functions do not. B.Neither pure nor impure functions can modify arguments. C.Both pure and impure functions must modify their arguments. D.Pure functions do not modify their arguments, while impure functions may modify them.

Q25

What happens when a function depends on variables or functions defined outside of its own definition block?

A.It is guaranteed to be a pure function. B.It can never be sure to behave the same way every time it is called. C.It will cause a compilation error due to type inference. D.It is automatically optimized by the compiler to execute once.

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About this Function test

This free online practice test covers Function 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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