CBSE Class 10 Computer Science loop control structure MCQs

(1) What is offered by programming language to execute a statement or group of statement multiple times ?

(A) Loop control structure (B) Case control structure

(C) Array control structure (D) Process control structure

(2) Which of the given options show the looping part ?

(A) Body of loop (B) Control statement (C) Both (A) and (B) (D) None of these

(3) The main part of looping is known as what?

(A) Control of loop (B) Body of loop (C) Part of loop (D) Entry of loop

(4) Depending on the place of control statement in loop, it can be classified as what ?

(A) Entry-controlled (B) Exit-controlled (C) Process controlled (D) Both (A) and (B)

(5) Which of the following options show the example of entry controlled loop ?

(A) For loop (B) While loop (C) Do...while loop (D) Both (A) and (B)

(6) In which of the following loop it is possible that statements will not be executed even once before exiting from the loop ?

(A) Entry controlled loop (B) Exit controlled loop (C) Both (A) and (B) (D) None of these

(7) Which of the following options show example of exit-controlled loop ?

(A) For loop (B) While loop (C) Do...while loop (D) Both (A) and (B)

(8) In which of the following loop it is possible that statements will be executed at least once before exiting from the loop ?

(A) Entry-controlled loop (B) Exit-controlled loop (C) Both (A) and (B) (D) None of these

(9) In case of exit controlled loop, the statements can be executed at least minimum how many times ?

(A) One (B) More than one (C) Cannot be said (D) Zero

(10) C language provides how many basic loop control structure ?

(A) 3 (B) 4 (C) 5 (D) 6

(11) Which of the following options show the type of loop control structure ?

(A) For loop (B) While loop (C) Do...while loop (D) All of these

(12) Which of the following statement is used for looping ?

(A) if (B) from (C) for (D) where

(13) Which loop is used to execute block of statements for fixed number of times ?

(A) for loop(B) While loop (C) do...while loop (D) All of these

(14) For loop is an example of what ?

(A) Exit-controlled loop (B) Entry-controlled loop (C) Processing controlled loop (D) Process controlled loop

(15) For loop is made up of how many divisions ?

(A) 2 (B) 3 (C) 4 (D) 5

(16) A counter variable that is used to control the number of times a loop is to be executed is known by which name ?

(A) Process variable (B) Counter variable (C) Input variable (D) Output variable

(17) Which expression of For loop works as a test condition ?

(A) Statement-block (B) Expression-1 (C) Expression2 (D) Expression-3

(18) Which expression of For loop is tested every time ?

(A) Expression-1 (B) Expression-2 (C) Expression-3 (D) Statement-block

(19) What is used for checking loop terminating criteria ?

(A) Counter variable (B) Process variable (C) Input variable (D) Output variable

(20) Which expression is used for incrementing or decrementing value of control variable ?

(A) Statement-block (B) Expression-1 (C) Expression-2 (D)  Expression-3

(21) Which of the following command can be given in expression-3 part of For loop ?

(A) i = i + 1; (B) i = 0; (C) Both (A) and (B) (D) None of these

(22) Which statement is used to display "*" on screen ?

(A) printf() (B) scanf() (C) int main() (D) anyone

(23) Which of the following option can be executed by incrementing value of count by 1 ?

(A) ++count (B) +count (C) count++ (D) count+

(24) What is known as using one for loop within another for loop ?

(A) Next for loop (B) Nested for loop (C) Inner for loop (D) Outer for loop

(25) In nested For loop, how many For loop can be used within another For loop ?

(A)One (B) Two (C) Three (D) Many

(26) In nested For loop, first of all what is executed ?

(A) First loop (B) Last loop (C) Inner loop (D) Outer loop

(27) Which of the following statement is used for looping ?

(A) why (B) when (C) while (D) where

(28) Which loop is used, when number of iteration cannot be pre-determined and when loop terminating condition is to be tested before entering the loop ?

(A) For (B) While (C) Do ... while (D) Anyone of them

(29) Under which of the following condition, while loop is to be used ?

(A) When the number of iteration cannot be pre-determined.

(B) When loop terminating condition is to be tested before entering the loop.

(C) Both (A) and (B) (D) None of these

(30) While loop is an example of which loop ?

(A) Entry-controlled loop(B) Exit-controlled loop (C) Process-controlled loop (D) Constant-controlled loop

(31)known as entry controlled loop ?

(A) As we check the condition after exit. (B) As we check the condition after entry.

(C) As we check the condition at the exit point (D) As we check the condition at the entry point

(32) What does program control evaluates first in while loop ?

(A) Test expression(B) Statement-block (C) Both (A) and (B) (D) None of these

(33) In while loop, what is evaluated first of all ?

(A) Statement-block (B) Test expression (C) (A) or (B) both (D) None of these

(34) What happen if in while loop test expression is evaluated to true ?

(A) Loop containing statement-block is executed (B) Loop containing statement-block is not executed

(C) Loop is terminated (D) Loop is repeated

(35) From the following, which statement is used for looping ?

(A) do ... while (B) for ... while (C) when ... while (D) if ... while

(36) Which loop is used, when the test expression is to be checked after executing body of loop ?

(A) for loop (B) while loop (C) do....while loop (D) anyone

(37) Do....while loop is which kind of loop ?

(A) Entry-controlled loop (B) Exit-controlled loop (C) Entrance-controlled loop (D) Both (A) and (B)

(38) For which of the reasons do....while loop is known as exit-controlled loop ?

(A) As condition is checked at the end of loop. (B) As condition is checked in starting of loop.

(C) As condition is checked in middle of loop. (D) As condition is checked everytime.

(39) In do....while loop, what is checked after execution of statements ?

(A) Statement-block (B) Test expression (C) Both (A) and (B) (D) None of these

(40) In do....while loop, how many times the execution of statement is done ?

(A) At least once (B) Sometime not even once (C) Can not be said (D) None of these

(41) In do....while loop , what is executed first ?

(A) Statement-block (B) Test expression (C) (A) and (B) both (D) None of these

(42) In do...while loop, what is done after the execution of statement-block ?

(A) Repetition of loop (B) Termination of loop (C) Test expression (D) Both (A) and (B)

(43) For every do clause, there must be what ?

(A) while (B) does (C) if (D) none of them are compulsory

(44) When there is a loop within another loop, it is known as what ?

(A) nested loop (B) next loop (C) nest loop (D) null loop

(45) To select the appropriate loop, which thing should be seen first ?

(A) Whether its entry-controlled or exit-controlled loop

(B) Its repeating how many statements

(C) Loop is infinite or not? (D) All of these

(46) What can be used for entry-controlled loop ?

(A) for loop (B) while loop (C) Both (A) and (B) (D) do....while loop

(47) What can be used for exit-controlled loop ?

(A) for loop (B) while loop (C) Both (A) and (B) (D) do....while loop

(48) By using what in C language, we may skip any part of loop ?

(A) break statement (B) continue statement (C) end statement (D) Both (A) and (b)

(49) What is done, when break statement comes in loop ?

(A) To terminate loop instantly

(B) Through program control executes the next statement following the loop

(C) Repetition of loop (D) Both (A) and (B)

(50) Which statement is used to come out from the loop control structure ?

(A) continue (B) break (C) Both (A) and (B) (D) end

(51) Which statement is used to terminate a case in the switch statement ?

(A) break statement(B) continue statement (C) end statement (D) anyone of these

(52) From the following under which statement program control executes the next statement following the loop ?

(A) break (B) end (C) stop (D) next

(53) From the following, which statement instead of forcing termination of loop, however, continue statement forces the next iteration of the loop to take place, skipping any code in between ?

(A) continue (B) break (C) Both (A) and (B) (D) None of these

(54) What is the role of continue statement ?

(A) To terminate the execution of another statement (B) To starts the execution of next iteration

(C) Both (A) and (B) (D) None of these

(55) in continue statement during loop, what is done if there is a execution of any condition?

(A) It leaves the other part of loop (B) The program control is repeated again (C) Both (A) and (B) (D) None of these

(56) which of the following option show the syntax of continue statement?

(A) Continue; (B) continue: (C) continue, (D) continue.

(57) If any loop runs forever and program control never comes out of it, then it is known as what ?

(A) Regular loop (B) Last loop (C) Control loop (D) Infinite loop

(58) Which of the following option is correct for infinite loop ?

(A) Infinite loop runs forever (B) Program control never comes out of it

(C) Both (A) and (b) (D) None of these

(59) when does loop become infinite?

(A) due to availability of exit condition in the logic of loop (B) Due to non-availability of exit condition in the logic of loop

(C) due to availability of entry condition in the logic of loop (D) due to non-availability of entry condition in the logic of loop

(60) Which shortcut key is used to terminate infinite loop ?

(A) Ctrl + A (B) Ctrl + B (C) Ctrl + C (D) Ctrl + D