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The Joy of Computing Using Python Week 1 Nptel Answers
The Joy of Computing Using Python Week 1 Nptel Answers (July-Dec 2025)
Questions 1-7: Pixel the Cat’s Mysterious Journey
In the vibrant digital world of Scratchville, lives a clever little cat named Pixel who loves exploring new areas through coding adventures. One day, Pixel stumbles upon a glowing scroll in the Scratch Coding Club’s lab. The scroll contains a strange pattern — a set of step-by-step movement instructions. Curious and excited, Pixel decides to follow them precisely.
Each instruction tells her to move a certain number of steps, wait patiently, and then rotate before continuing. The sequence seems repetitive, but Pixel senses that there’s a hidden purpose — maybe a message, a path, or a challenge.
As Pixel begins her journey, students at the club gather around the screen, watching the curious pattern unfold. Where will she end up? What shape will her path take? Why these specific turns and pauses?
Now, it’s up to you to analyze Pixel’s code-driven adventure and figure out the mysteries it holds…
Question 1. After following the sequence of movements from the glowing scroll, Pixel ends up back at the exact spot where she started. a) True b) False
Question 2. As Pixel follows the instructions from the mysterious scroll, she traces out a specific shape on the ground. What shape does her path form? a) A square b) A rectangle c) A circle d) A Triangle
Question 3. Based on the shape Pixel traces while following the scroll’s instructions, what is the area covered by her path? (in square units) a) b) c) d)
Question 4. Suppose Pixel had turned 120 degrees instead of 90 degrees at each turn while following the scroll’s instructions. What shape would her new path form? a) Rectangle b) An open figure c) Hexagon d) A regular polygon
These are The Joy of Computing Using Python Week 1 Nptel Answers
Question 5. Several students at the Scratch Coding Club try to recreate Pixel’s journey using different blocks. Which of the following Scratch code snippets would produce the same path that Pixel traced in her original adventure?
Question 6. If Pixel follows a new set of instructions written in the Scratch code below, will she return to the same spot where she started? a) No b) Yes
Question 7. In the new scenario from the previous question, what shape would Pixel trace as she follows the updated instructions? a) A Rectangle b) A Hexagon c) A Octagon d) An open figure
Question 12. How many turns did the man make, and how many of them were to the left? a) 3 turns, 3 left b) 4 turns, 2 left c) 3 turns, 2 left d) 2 turns, 1 left
Question 17. Why is the assignment set x1 to x2 necessary? a) It resets the loop counter b) It keeps the two-term window sliding forward c) Without it, the program would crash d) It shortens the repeat count
These are The Joy of Computing Using Python Week 1 Nptel Answers
Question 22. What broad programming concept does this script best illustrate? a) Sorting algorithms b) State machines c) Numerical iteration d) Event broadcasting
Question 23. What is the initial value of current and previous when the program starts? a) Both 1 b) current = 1, previous = 0 c) Both 0 d) They are uninitialized
Question 24. What does the changedFlag variable represent in the code? a) Whether the value changed b) The current value c) The difference between numbers d) Total changes counted
These are The Joy of Computing Using Python Week 1 Nptel Answers
Question 25. What is the role of the previous variable? a) It counts how many times the loop ran b) It stores the value from the last iteration c) It acts like a flag d) It adds to the score
Question 27. What is the purpose of setting previous to current at the end of the loop? a) To reset the loop b) To compare the new value with the last one in the next iteration c) To pick a new random number d) To display the current value
Question 29. Which block is used to simulate a changing value? a) set current to 0 b) set current to pick random 1 to 5 c) set previous to current d) say “Value changed!”
Question 30. When does the sprite say “Same value”? a) If current is greater than previous. b) If current is not equal to previous. c) If current equals previous. d) If flag is set to 1.
8. Suppose you have an arithmetic expression involving addition, subtraction, multiplication, and exponentiation. Which statement is true about instructing a computer to evaluate it?
A) Such expressions cannot be computed.
B) A computer can only evaluate expressions involving addition and multiplication.
C) These expressions can be evaluated using built-in operations or libraries.
D) A computer can only evaluate expressions involving addition and subtraction.
Q1.The cat wants to move 100 steps away slowly, and by the time it finishes moving 100 steps, it needs to slowly rotate as well towards the opposite direction. Can both these tasks be accomplished by using single loop in scratch? a) Yes b) No
These are The Joy of Computing Using Python Week 1 Nptel Answers
Q3. What does the cat say here ? a) Says the number 4, for 1 second, 10 times and changes the value of number variable by multiplying previous value with 4. b) Says the number 4, for 1 second, 10 times and changes the value of number variable by adding previous value with 4. c) Says the number 4, and its multiples each for 1 second, till 40 and changes the value of number variable by multiplying previous value with 4. d) Says the number 4, and its multiples each for 1 second, till 40 and changes the value of number variable by adding previous value with 4.
These are The Joy of Computing Using Python Week 1 Nptel Answers
Q5. Let answer for previous question be stored in variable x, what does the cat say after the execution of the loop ? 16 5 29 44
Answer: 29
Q6. Which of the following is use case of variables in programming. They are used to make the computer store program data into SSD. They help in storing and retrieval of information/data while a task on the machine is running. They simplify a task which involves processing repetitive procedures.They simplify a task which involves processing repetitive procedures. They help in running multiple tasks parallel to each other.
Answer: They help in storing and retrieval of information/data while a task on the machine is running.
These are The Joy of Computing Using Python Week 1 Nptel Answers
Q9. In which of the following code blocks calculation of the squared distance between two points (10, 20) and (35, 49) is accomplished.
Answer: d)
Q10. What task does the block below accomplish ? Moves the ball in a parabolic path and stops 21 away steps from center(0, 0) in x direction. Moves the ball in a circular path and 21 times. Moves the ball in a triangular path and end at the center (0, 0). Moves the ball in a parabolic path and stops 20 away steps from center(0, 0) in x direction.
Answer: Moves the ball in a parabolic path and stops 20 away steps from center(0, 0) in x direction.
