Control Structures Quiz - CBSE Class 11 ICT

Free practice quiz: Control Structures (CBSE Class 11 ICT). 14 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 11 ICT practice quiz has 14 multiple-choice questions on Control Structures, and 14 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which control structure is used to repeatedly execute a block of code?

   1. if-else
   2. switch
   3. loop
   4. function
   Show answer

   Answer: C. loop

   Loops (like 'for' and 'while') are designed for repetitive execution of code blocks.

2. What is the difference between 'while' and 'do-while' loops?

   1. There is no difference
   2. 'while' checks the condition before each iteration, 'do-while' checks after
   3. 'do-while' checks the condition before each iteration, 'while' checks after
   4. They are used in different programming languages
   Show answer

   Answer: B. 'while' checks the condition before each iteration, 'do-while' checks after

   'while' loop checks the condition first, 'do-while' executes the loop body at least once.

3. What is nested loop?

   1. A loop inside another loop
   2. A loop that never ends
   3. A loop with multiple conditions
   4. A loop that executes only once
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   Answer: A. A loop inside another loop

   A nested loop is a loop placed inside another loop.

4. What is an infinite loop and how can you prevent it?

   1. A loop with a condition that always evaluates to false
   2. A loop with a condition that always evaluates to true
   3. A loop that executes only once
   4. A loop with multiple conditions
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   Answer: B. A loop with a condition that always evaluates to true

   An infinite loop occurs when the loop condition never becomes false; proper loop termination conditions are essential to prevent it.

5. How can you improve the efficiency of a recursive function?

   1. Avoid using recursion altogether
   2. Use memoization to store previously calculated results
   3. Increase the recursion depth
   4. Ignore optimization techniques
   Show answer

   Answer: B. Use memoization to store previously calculated results

   Memoization improves efficiency by storing and reusing previously computed results, thus avoiding redundant calculations.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What does an 'if' statement do?
2. Explain the use of a 'break' statement within a loop.
3. What is the purpose of a 'switch' statement?
4. How does a 'for' loop differ from a 'while' loop?
5. Describe the functionality of a 'continue' statement in a loop.
6. Explain the concept of recursion in programming.
7. What are the potential drawbacks of using recursion?
8. Explain the use of flags in controlling program flow.
9. How can you handle exceptions during program execution using control structures?

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