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MAD I · Most repeated questions

83 questions · 268.5 marks · 6 papers · 30 question types

Answer key

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Modern Application Development I

Most repeated questions

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
MSQ: One or more options correct. Select all to score.
NAT: Numerical response. No negative marking.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

Type 1 · asked 6 times · Requests, forms & HTTP errors

Predict /score route output for given query strings

Read the passage below, then answer Q1–Q3
Q1MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. AAlex scored 0 and received grade F.
2. BAlex scored eighty and received grade F
3. CError 500: Internal Server Error
4. DInvalid marks for Alex
Q2MCQ2 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. AGuest scored 88 and received grade A
2. BGuest scored 0 and received grade F
3. CGuest scored 88 and received grade B
4. DInvalid marks for Guest
Q3MCQ2 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. AAnya scored 59.5 and received grade F
2. BInvalid marks for Anya
3. CAnya scored 0 and received grade F
4. DAnya scored 59 and received grade F
Read the passage below, then answer Q4–Q6
Q4MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. AAlex scored 0 and received grade F
2. BInvalid marks for Alex
3. CAlex scored eighty and received grade F
4. DError 500: Internal Server Error
Q5MCQ2 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. AGuest scored 88 and received grade A
2. BGuest scored 88 and received grade B
3. CGuest scored 0 and received grade F
4. DInvalid marks for Guest
Q6MCQ2 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. AAnya scored 59.5 and received grade F
2. BAnya scored 0 and received grade F
3. CInvalid marks for Anya
4. DAnya scored 59 and received grade F

Type 2 · asked 5 times · Python essentials: decorators & argv

Predict the output of a function wrapped by a Python decorator

Q7MCQ3 Marks·Choose one option
End Term · 22 Dec 2024 (FN)Key ↓
1. A
2. B
3. C
4. D
Q8MCQ3 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
Q9MCQ3 Marks·Choose one option
Quiz 2 · 3 Aug 2025 (AN)Key ↓
1. A10
2. B9
3. C3
4. D4
Q10MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q11MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Type 3 · asked 4 times · JavaScript & the DOM

Pick the JS code that makes a text box's content bold

Q12MCQ3 Marks·Choose one option
End Term · 22 Dec 2024 (FN)Key ↓
Consider the following HTML document.
1. A
2. B
3. C
4. D
Q13MSQ3 Marks·Choose all correct options
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
Q14MSQ4.5 Marks·Choose all correct options
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q15MSQ4.5 Marks·Choose all correct options
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Type 4 · asked 4 times · Templates: string Template & Jinja2

Predict the rendered output of a Jinja2 for-loop template

Q16MCQ3 Marks·Choose one option
End Term · 22 Dec 2024 (FN)Key ↓
1. A
2. B
3. C
4. D
Q17MCQ2 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
Q18MCQ4.5 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
Q19MCQ4.5 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Type 5 · asked 4 times · Templates: string Template & Jinja2

Work out what a child template renders with extends and block

Q20MCQ2 Marks·Choose one option
End Term · 22 Dec 2024 (FN)Key ↓
1. A
2. B
3. C
4. D
Q21MCQ2 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
Q22MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q23MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Type 6 · asked 4 times · HTML, CSS & accessible UI

Find the final text colour using CSS specificity rules

Q24MCQ4.5 Marks·Choose one option
End Term · 22 Dec 2024 (FN)Key ↓
Consider the following HTML document. How will the browser render above HTML file?
1. A
2. B
3. C
4. D
Q25MCQ3 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A1- b, 2 - a, 3- d, 4 - c
2. B1- c, 2 - d, 3- d, 4 - b
3. C1- c, 2 - a, 3- d, 4 - b
4. D1- a, 2 - c, 3- b, 4 - d
Q26MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. AColor: green, Font-size: 20px
2. BColor: orange, Font-size: 14px
3. CColor: purple, Font-size: 20px
4. DColor: purple, Font-size: 14px
Q27MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. ABlue
2. BRed
3. CGreen
4. DBlack

Type 7 · asked 3 times · Testing with pytest

Find which tests run with 'pytest -m <marker>'

Q28MCQ3 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
Q29MSQ4.5 Marks·Choose all correct options
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
5. E
Q30MSQ4.5 Marks·Choose all correct options
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
5. E

Type 8 · asked 3 times · Templates: string Template & Jinja2

Find which string.Template call works or raises KeyError

Q31MCQ2 Marks·Choose one option
End Term · 22 Dec 2024 (FN)Key ↓
1. A
2. B
3. C
4. D
Q32MCQ3 Marks·Choose one option
Quiz 2 · 3 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q33MSQ3 Marks·Choose all correct options
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
5. E

Type 9 · asked 3 times · Templates: string Template & Jinja2

Predict output when string.Template and Jinja2 are combined

Q34MCQ4.5 Marks·Choose one option
End Term · 22 Dec 2024 (FN)Key ↓
1. A
2. B
3. C
4. D
Q35MCQ4.5 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q36MSQ3 Marks·Choose all correct options
Quiz 1 · 26 Oct 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
5. E

Type 10 · asked 3 times · Web basics, bandwidth & data size

Compute bits/bytes or characters with optimal fixed-length encoding

Q37NAT3 Marks·Write the number
End Term · 22 Dec 2024 (FN)Key ↓
Your answer:
Q38MCQ3 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A3000
2. B6000
3. C9000
4. D12000
Q39NAT3 Marks·Write the number
Quiz 2 · 3 Aug 2025 (AN)Key ↓
Your answer:

Type 11 · asked 3 times · Requests, forms & HTTP errors

Trace a Flask login loop over request.args for given URLs

Q40MSQ4.5 Marks·Choose all correct options
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
5. E
Q41MCQ3 Marks·Choose one option
Quiz 2 · 3 Aug 2025 (AN)Key ↓
1. AYou are authorized!!
2. BYou are unauthorized!!
3. CNot Found
4. DInternal Server Error
Q42MSQ3 Marks·Choose all correct options
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
5. E

Type 12 · asked 3 times · Logging, Git & deployment

Find which log messages appear for a given logging level

Q43MSQ3 Marks·Choose all correct options
End Term · 22 Dec 2024 (FN)Key ↓
Consider the following code snippet.
1. A
2. B
3. C
4. D
Q44MCQ4.5 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q45MCQ4.5 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Type 13 · asked 3 times · HTML, CSS & accessible UI

Tell how block and inline HTML elements display by default

Q46MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q47MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
Q48MCQ3 Marks·Choose one option
Quiz 1 · 26 Oct 2025 (AN)Key ↓
1. AStatement 1 is correct, but statement 2 is incorrect.
2. BStatement 2 is correct, but statement 1 is incorrect.
3. CBoth statements 1 and 2 are correct
4. DBoth statements 1 and 2 are incorrect

Type 14 · asked 3 times · REST APIs with Flask-RESTful

Find which curl requests fail on a Flask-RESTful resource

Q49MCQ3 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. AOnly 3
2. BOnly 3 and 4
3. COnly 5 and 6
4. DOnly 3, 4, 5 and 6
Q50MSQ3 Marks·Choose all correct options
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Read the passage below, then answer Q51
Based on the above data, answer the given subquestions.
Q51MCQ4.5 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D

Type 15 · asked 2 times · Flask routes & app setup

Predict url_for() results inside app.test_request_context()

Q52MSQ4.5 Marks·Choose all correct options
End Term · 22 Dec 2024 (FN)Key ↓
1. A
2. B
3. C
4. D
Q53MCQ3 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Type 16 · asked 2 times · Testing with pytest

Find the pytest setup issue with a fixture in a conftest file

Q54MCQ4.5 Marks·Choose one option
End Term · 22 Dec 2024 (FN)Key ↓
1. A
2. B
3. C
4. D
Q55MCQ4.5 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Type 17 · asked 2 times · Testing with pytest

Predict 'pytest -v' output for a test class with assertions

Q56MCQ3 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
Q57MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D

Type 18 · asked 2 times · Web basics, bandwidth & data size

Compute data used over a time period at a given bandwidth

Q58MCQ3 Marks·Choose one option
End Term · 22 Dec 2024 (FN)Key ↓
1. A1.35
2. B2.7
3. C3.15
4. D5.4
Q59MCQ3 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A64.8
2. B18
3. C5.4
4. D22.5

Type 19 · asked 2 times · Web basics, bandwidth & data size

Compute download time from file size and connection speed

Q60MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
A user downloads a 10 MB file from a server with 5 Mbps speed. How long does it approximately take?
1. A2 seconds
2. B10 seconds
3. C16 seconds
4. D1.6 seconds
Q61MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
A user downloads a 10 MB file from a server with 5 Mbps speed. How long does it approximately take?
1. A2 seconds
2. B10 seconds
3. C16 seconds
4. D1.6 seconds

Type 20 · asked 2 times · Requests, forms & HTTP errors

Predict the response with abort() and custom error handlers

Q62MSQ3 Marks·Choose all correct options
End Term · 22 Dec 2024 (FN)Key ↓
Consider the following flask application running on the base URL and is accessed through a browser. Select the correct option(s).
1. A
2. B
3. C
4. D
Q63MCQ4.5 Marks·Choose one option
Quiz 2 · 3 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D

Type 21 · asked 2 times · Models, databases & SQLAlchemy

Match GET, SQLAlchemy, Template and SQLite to their MVC roles

Q64MCQ2 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A1-c, 2-a, 3-d, 4-b
2. B1-d, 2-c, 3-a, 4-b
3. C1-c, 2-d, 3-b, 4-a
4. D1-c, 2-d, 3-a, 4-b
Q65MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. A1-c, 2-a, 3-d, 4-b
2. B1-d, 2-c, 3-a, 4-b
3. C1-c, 2-d, 3-b, 4-a
4. D1-c, 2-d, 3-a, 4-b

Type 22 · asked 2 times · Testing with pytest

Match software testing types to their focus area

Q66MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A1-a, 2- c, 3-b, 4-d, 5-e
2. B1-b, 2- c, 3-a, 4-e, 5-d
3. C1-e, 2- d, 3-c, 4-a, 5-b
4. D1-e, 2- d, 3-b, 4-a, 5-c
Q67MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. A1-a, 2- c, 3-b, 4-d, 5-e
2. B1-b, 2- c, 3-a, 4-e, 5-d
3. C1-e, 2- d, 3-b, 4-a, 5-c
4. D1-e, 2- d, 3-c, 4-a, 5-b

Type 23 · asked 2 times · Logging, Git & deployment

Choose the git commands to merge two feature branches into main

Q68MCQ2 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. A
2. B
3. C
4. D
Q69MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D

Type 24 · asked 2 times · Logging, Git & deployment

Predict the result of git push after a teammate pushed first

Q70MCQ4.5 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q71MCQ4.5 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Type 25 · asked 2 times · Flask routes & app setup

Find which routes work with a custom template_folder

Q72MCQ4.5 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q73MCQ4.5 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. AAll routes will work correctly as Flask will automatically search in both templates/ and custom_templates/ folders
2. BThe / and /dashboard routes will fail with TemplateNotFound error, while /admin and /profile routes will work correctly
3. COnly the /admin and /profile routes will work correctly, while / and /dashboard routes will fail with TemplateNotFound error
4. DAll routes will fail because Flask requires the template folder to be named exactly templates

Type 26 · asked 2 times · Models, databases & SQLAlchemy

Predict effect of cascade delete on related SQLAlchemy rows

Q74MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q75MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Type 27 · asked 2 times · Python essentials: decorators & argv

Predict output of a script that reads sys.argv

Q76MCQ3 Marks·Choose one option
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q77MCQ3 Marks·Choose one option
Quiz 1 · 26 Oct 2025 (AN)Key ↓
1. A
2. B
3. C
4. D

Type 28 · asked 2 times · Requests, forms & HTTP errors

Find the HTTP method or URL produced by submitting an HTML form

Q78MCQ3 Marks·Choose one option
End Term · 13 Apr 2025 (FN)Key ↓
1. AGET
2. BPOST
3. CPUT
4. DDELETE
Q79MCQ2 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Type 29 · asked 2 times · Validation & access control

Judge statements about client-side vs server-side validation

Q80MSQ3 Marks·Choose all correct options
End Term · 22 Dec 2024 (FN)Key ↓
Which of the following statements about the Constraint Validation API is/are true?
1. AThe Constraint Validation API ensures that form input meets client-side validation rules before submission.
2. BThe Constraint Validation API is sufficient to prevent server-side attacks like SQL injection.
3. CIt is possible to bypass the Constraint Validation API by directly sending requests to the server.
4. DThe Constraint Validation API automatically validates all data on the server side.
Q81MCQ2 Marks·Choose one option
End Term · 31 Aug 2025 (FN)Key ↓
Consider the following statements and choose the correct option Statement 1: It is mandatory to implement server-side validations and client-side validations. Statement 2: Server-side validations can be implemented using HTML5.
1. AStatement 1 is false, while statement 2 is true
2. BStatement 1 is true, while statement 2 is false
3. CBoth statements are false
4. DBoth statements are true

Type 30 · asked 2 times · Testing with pytest

Pick true statements about unit tests in Flask with pytest

Q82MSQ3 Marks·Choose all correct options
End Term · 31 Aug 2025 (AN)Key ↓
1. A
2. B
3. C
4. D
Q83MSQ3 Marks·Choose all correct options
End Term · 31 Aug 2025 (FN)Key ↓
1. A
2. B
3. C
4. D

Official Key

Master Answer Key & Explanations

Official answer keys from IIT Madras BS past papers. Click any question to review.

Reveal Key

Q1D

Q2C

Q3B

Q4B

Q5B

Q6C

Q7B

Q8B

Q9B

Q10C

Q11B

Q12D

Q13A, B

Q14C, D

Q15A, B

Q16D

Q17B

Q18A

Q19B

Q20B

Q21C

Q22D

Q23B

Q24D

Q25C

Q26D

Q27C

Q28A

Q29C, D

Q30B, D

Q31D

Q32A

Q33A, B, C, D

Q34C

Q35C

Q36A, C, D

Q371000

Q38B

Q392000

Q40B, D

Q41B

Q42B, D

Q43A, D

Q44C

Q45D

Q46D

Q47C

Q48B

Q49A

Q50A, C

Q51C

Q52A, C

Q53D

Q54D

Q55C

Q56A

Q57A

Q58C

Q59C

Q60C

Q61C

Q62B, D

Q63D

Q64D

Q65D

Q66D

Q67C

Q68C

Q69C

Q70B

Q71D

Q72B

Q73C

Q74C

Q75B

Q76B

Q77C

Q78A

Q79B

Q80A, C

Q81C

Q82A, D

Q83B, D

Questions and answer keys are reproduced from the official IIT Madras BS papers. Topics and repeated question types are BTechi’s own grouping. BTechi is not affiliated with IIT Madras.