🧠 IIT Madras Notes

Mock_test_1_Sep_2025_CT_Qualifier

13 min read

Mock test 1 - (Sep 2025 - CT - Qualifier)

This assignment will not be graded and is only for practice.

Question 1

The following pseudocode is executed using the “Scores” dataset. What will A represent at the end of execution?

xxxxxxxxxx 1 A = 0 2 while(Table 1 has more rows){ 3 Read the first row X in Table 1 4 if(X.Gender == 'M' and X.CityTown != “Chennai”){ 5 A = A + X.Mathematics 6 } 7 Move X to Table 2 8 }

  • Sum of Mathematics marks of students from Chennai
  • Sum of Mathematics marks of male students from Chennai
  • Sum of Mathematics marks of male students
  • Sum of Mathematics marks of male students not from Chennai

Accepted Answers:

  • Sum of Mathematics marks of male students not from Chennai

Question 2

Match the following expressions in the Column 1 with the appropriate values in column 2.

Column 1

Column 2

a. 2 = 2 or 2 > 3

1. Invalid expression

b. 2 == 2 and 2 > 3

2. True

c. 2 = 3

3. False

d. 2 + ‘2’

4. 4

e. 2 >=2

5. “22”

  • a - (2), b - (3), c - (1), d - (1), e - (2)
  • a - (1), b - (3), c - (1), d - (1), e - (2)
  • a - (2), b - (3), c - (1), d - (4), e - (2)
  • a - (1), b - (3), c - (2), d - (1), e - (1)

Accepted Answers:

  • a - (1), b - (3), c - (1), d - (1), e - (2)

Question 3

The following pseudocode is executed using the “Library” dataset. At the end of the execution, A captures the maximum number of pages of a book which is written in a language other than English. Choose the correct code fragment to complete the pseudocode.

xxxxxxxxxx 1 A = 0 2 while (Table 1 has more rows) { 3 Read the first row X in Table 1 4 ********************* 5 * Fill the code * 6 ********************* 7 Move X to Table 2 8 }

  • xxxxxxxxxx 1 if(X.Language == “English” and X.Pages > A){ 2 A = X.Pages 3 }
  • xxxxxxxxxx 1 if(X.Language != “English” and X.Pages > A){ 2 A = X.Pages 3 }
  • xxxxxxxxxx 1 if(X.Language != “English” and X.Pages < A){ 2 A = X.Pages 3 }
  • xxxxxxxxxx 1 if(X.Language == “English” and X.Pages < A){ 2 A = X.Pages 3 }

Accepted Answers:

  • if(X.Language != “English” and X.Pages > A){ A = X.Pages }

Question 4

The following pseudocode is executed using the “Scores” table. At the end of the execution, A captures the second highest mark in Mathematics. Assume that Max holds the value of the highest mark in Mathematics. Choose the correct code fragment to complete the pseudocode.

xxxxxxxxxx 1 A = 0 2 while(Table 1 has more rows){ 3 Read the first row X in Table 1 4 ********************* 5 * Fill the code * 6 ********************* 7 Move the row X to Table 2 8 }

  • xxxxxxxxxx 1 if(X.Mathematics > A){ 2 A = X.Mathematics 3 }
  • xxxxxxxxxx 1 if(X.Mathematics > Max and X.Mathematics < A){ 2 A = X.Mathematics 3 }
  • xxxxxxxxxx 1 if(X.Mathematics < Max and X.Mathematics > A){ 2 A = X.Mathematics 3 }
  • xxxxxxxxxx 1 if(X.Mathematics < Max){ 2 A = X.Mathematics 3 }

Accepted Answers:

  • if(X.Mathematics < Max and X.Mathematics > A){ A = X.Mathematics }

Question 5

Let X be a row in the “Words” table. Let isShortVerb be a procedure to find whether the word in the row X is a verb with letter count at most five. Choose the correct code fragment to complete the pseudocode.

xxxxxxxxxx 1 Procedure isShortVerb(X) 2 ********************* 3 * Fill the code * 4 ********************* 5 End isShortVerb

  • xxxxxxxxxx 1 if(X.PartOfSpeech == “Verb”){ 2 return(True) 3 } 4 else{ 5 return(False) 6 }
  • xxxxxxxxxx 1 if(X.PartOfSpeech == “Verb” and X.LetterCount ≤ 5){ 2 return(False) 3 } 4 else{ 5 return(True) 6 }
  • xxxxxxxxxx 1 if(X.PartOfSpeech == “Verb” or X.LetterCount ≤ 5){ 2 return(True) 3 } 4 else{ 5 return(False) 6 }
  • xxxxxxxxxx 1 if(X.PartOfSpeech == “Verb” and X.LetterCount ≤ 5){ 2 return(True) 3 } 4 else{ 5 return(False) 6 }

Accepted Answers:

  • if(X.PartOfSpeech == “Verb” and X.LetterCount ≤ 5){ return(True) } else{ return(False) }

Question 6

The following pseudocode is executed using the “Words” table. What will A represent at the end of execution?

xxxxxxxxxx 1 A = 0 2 while(Table 1 has more rows){ 3 Read the first row X in Table 1 4 i = 1, B = True 5 while(i ≤ X.LetterCount){ 6 if(ith letter of X.Word is a vowel){ 7 B = False 8 } 9 i = i + 1 10 } 11 if(B){ 12 A = A + 1 13 } 14 Move X to Table 2 15 }

  • Number of words with at most one vowel
  • Number of words with at exactly one vowel
  • Number of words without vowels
  • Number of words with vowel count at most 2

Accepted Answers:

  • Number of words without vowels

Question 7

The following pseudocode is executed using the “Library” dataset. At the end of the execution, A captures the number of books which are published after 2010 or have less than the average number of pages. Assume that the variable Avg holds the value of the average number of pages of the books in the table. The pseudocode may have mistakes. Identify all such mistakes (if any). It is a Multiple Select Question (MSQ).

xxxxxxxxxx 1 A = 0 2 while(Table 1 has more rows){ 3 Read the first row X in Table 1 4 C = False 5 if(X.Year > 2010){ 6 C = True 7 } 8 if(X.Pages > Avg){ 9 C = True 10 } 11 if(C){ 12 A = 1 13 } 14 Move X to Table 2 15 }

  • Error in Line 5
  • Error in Line 8
  • Error in Line 9
  • Error in Line 12
  • No error

Accepted Answers:

  • Error in Line 8
  • Error in Line 12

Question 8

The following pseudocode is executed using the “Library” dataset. At the end of the execution, A is set to True if and only if there is a pair of books with same genre and same year of publication. Choose the correct code fragment to complete the pseudocode.

xxxxxxxxxx 1 A = False 2 while(Table 1 has more rows){ 3 Read the first row X in Table 1 4 Move X to Table 2 5 while(Table 1 has more rows){ 6 Read the first row Y in Table 1 7 Move Y to Table 3 8 ********************* 9 * Fill the code * 10 ********************* 11 } 12 Move all rows from Table 3 to Table 1 13 }

  • xxxxxxxxxx 1 if(X.Genre == Y.Genre or X.Year == Y.Year){ 2 A = True 3 }
  • xxxxxxxxxx 1 if(X.Genre == Y.Genre and X.Year == Y.Year){ 2 A = True 3 }
  • xxxxxxxxxx 1 if(X.Genre == Y.Genre or X.Year == Y.Year){ 2 A = False 3 }
  • xxxxxxxxxx 1 if(X.Genre == Y.Genre and X.Year == Y.Year){ 2 A = False 3 }

Accepted Answers:

  • if(X.Genre == Y.Genre and X.Year == Y.Year){ A = True }

Question 9

The following pseudocode is executed using the “Library” table. What will the values of the variables A and B represent at the end of the execution?

xxxxxxxxxx 1 A = 0, B = 0 2 while(Table 1 has more rows){ 3 Read the first row X in Table 1 4 if(X.Pages == A){ 5 B = B + 1 6 } 7 if(X.Pages > A){ 8 A = X.Pages 9 B = 1 10 } 11 Move X to Table 2 12 }

  • A = Number of books with maximum number of pages B = Maximum number of pages across all books
  • A = Maximum number of pages across all books B = Number of books with maximum number of pages
  • A = Minimum number of pages across all books B = It is always one
  • A = Maximum number of pages across all books B = It is always one

Accepted Answers:

  • A = Maximum number of pages across all books

B = Number of books with maximum number of pages

Question 10

The following pseudocode is executed using the “Words” dataset. What will the value of C represent at the end of the execution?

xxxxxxxxxx 1 C = 0 2 while(Table 1 has more rows){ 3 Read the first row X from Table 1 4 Move X to Table 2 5 if(X.Word ends with a full stop){ 6 C = C + GetSomething(Table 2) 7 Clear all rows in Table 2 8 } 9 } 10 ​ 11 Procedure GetSomething(Table 2) 12 A = 0 13 While(Table 2 has more rows){ 14 Read the first row X in Table 2 15 Move X to Table 3 16 while(Table 2 has more rows){ 17 Read the first row Y in Table 2 18 if(X.LetterCount != Y.LetterCount and X.PartOfSpeech == Y.PartOfSpeech){ 19 A = A + 1 20 } 21 Move Y to Table 4 22 } 23 Move all rows from Table 4 to Table 2 24 } 25 return (A) 26 End GetSomething

  • Number of pairs of words with the same part of speech and letter count
  • Number of pairs of words with the same part of speech and different letter count
  • Number of pairs of words with the same part of speech and letter count, that occur in the same sentence
  • Number of pairs of words with same part of speech and different letter count, that occur in the same sentence

Accepted Answers:

  • Number of pairs of words with same part of speech and different letter count, that occur in the same sentence

Question 11

Let A be an author who had written a book in the “Library” dataset and B be a positive integer value. What does the procedure DoSomething compute?

xxxxxxxxxx 1 Procedure DoSomething(A, B) 2 C = 1900, D = 2022 3 while(Table 1 has more rows){ 4 Read the first row X in Table 1 5 if(X.Author == A){ 6 if(X.Year > C){ 7 C = X.Year 8 } 9 if(X.Year < D){ 10 D = X.Year 11 } 12 } 13 Move X to Table 2 14 } 15 if(C − D ≥ B){ 16 return(True) 17 } 18 else{ 19 return(False) 20 } 21 End DoSomething

  • Outputs “True” if and only if the second book of the author A was published at least B years after their first book was published
  • Outputs “True” if and only if the last book of the author A was published at least B years after their first book was published
  • Outputs “True” if and only if the last book of the author A was published at least B years after their second-last book was published
  • Outputs “True” if and only if the last book of the author A was published at least B years before their first book was published

Accepted Answers:

  • Outputs “True” if and only if the last book of the author A was published at least B years after their first book was published

Question 12

The following pseudocode is executed using the “Scores” dataset. At the end of the execution, A captures the number of female students who are above average in at least one subject. Assume that M, P and C hold the average marks of the subjects Mathematics, Physics and Chemistry respectively. The pseudocode may have mistakes. Identify all such mistakes (if any). It is a Multiple Select Question (MSQ).

xxxxxxxxxx 1 A = 0 2 while(Table 1 has more cards){ 3 Read the first row X from Table 1 4 if(CheckSomething(X, M, P, C)){ 5 A = 1 6 } 7 Move X to Table 2 8 } 9 Procedure CheckSomething(Y, C1, C2, C3) 10 if(Y.Gender == “F”){ 11 if(Y.Mathematics > C1 and Y.Physics > C2 and Y.Chemistry > C3){ 12 return (True) 13 } 14 else{ 15 return(False) 16 } 17 } 18 else{ 19 return(False) 20 } 21 End CheckSomething

  • Error in Line 4
  • Error in Line 5
  • Error in Line 10
  • Error in Line 11
  • Multiple return(False) in procedure CheckSomething
  • No error

Accepted Answers:

  • Error in Line 5
  • Error in Line 11

Question 13

The following pseudocode is executed using the “Words” table. At the end of the execution, A captures the number of sentences with at least two nouns that have at most 2 vowels. The pseudocode may have mistakes. Identify all such mistakes (if any). It is a Multiple Select Question (MSQ).

xxxxxxxxxx 1 A = 0, C = 0 2 while(Table 1 has more cards){ 3 Read the first row X from Table 1 4 if(X.PartOfSpeech == “Noun” and CountVowels(X) ≤ 2){ 5 C = C + 1 6 } 7 if(X.Word ends with a full stop){ 8 if(C ≥ 2){ 9 A = A + 1 10 C = 0 11 } 12 } 13 Move X to Table 2 14 } 15 Procedure CountVowels(Y) 16 i = 1 17 B = 0 18 while(i ≤ Y.LetterCount){ 19 if(ith letter of Y.Word is a vowel){ 20 B = B + 1 21 i = i + 1 22 } 23 } 24 return(B) 25 End CountVowel

  • Line 5: Error in updating C
  • Line 9: A is updated in wrong place
  • Line 10: C is updated in wrong place
  • Line 20: B is updated in wrong place
  • Line 21: i is updated in wrong place
  • Line 24: Return value is incorrect

Accepted Answers:

  • Line 10: C is updated in wrong place
  • Line 21: i is updated in wrong place

Question 14

The following pseudocode is executed using the “Scores” table. At the end of the execution, C captures the number of pairs of students who have the same date of birth, or the same City/Town but different gender. Choose the correct code fragment(s) to complete the pseudocode. It is a Multiple Select Question (MSQ).

xxxxxxxxxx 1 C = 0 2 while(Table 1 has more rows){ 3 Read the first row X in Table 1 4 Move X to Table 2 5 while(Table 1 has more rows){ 6 Read the first row Y in Table 1 7 Move Y to Table 3 8 ********************* 9 * Fill the code * 10 ********************* 11 } 12 Move all rows from Table 3 to Table 1 13 }

  • xxxxxxxxxx 1 if(X.DateOfBirth == Y.DateOfBirth){ 2 C = C + 1 3 } 4 if(X.Gender != Y.Gender and X.CityTown == Y.CityTown){ 5 C = C + 1 6 }
  • xxxxxxxxxx 1 if(X.DateOfBirth == Y.DateOfBirth){ 2 C = C + 1 3 } 4 else{ 5 if(X.Gender != Y.Gender and X.CityTown == Y.CityTown){ 6 C = C + 1 7 } 8 }
  • xxxxxxxxxx 1 if(X.DateOfBirth == Y.DateOfBirth){ 2 if(X.Gender != Y.Gender and X.CityTown == Y.CityTown){ 3 C = C + 1 4 } 5 }
  • xxxxxxxxxx 1 if((X.DateOfBirth == Y.DateOfBirth) or (X.Gender != Y.Gender and X.CityTown == Y.CityTown)){ 2 C = C + 1 3 }

Accepted Answers:

  • if(X.DateOfBirth == Y.DateOfBirth){ C = C + 1 } else{ if(X.Gender != Y.Gender and X.CityTown == Y.CityTown){ C = C + 1 } }
  • if((X.DateOfBirth == Y.DateOfBirth) or (X.Gender != Y.Gender and X.CityTown == Y.CityTown)){ C = C + 1 }

Graph View

Recent Features