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MAD II · JS objects, arrays, classes & DOM

16 questions · 55.5 marks · 5 papers

Answer key

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Modern Application Development II

JS objects, arrays, classes & DOM

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.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

Quiz 1 · 26 Oct 2025 (AN)Quiz 1

Q1MCQ3 Marks·Choose one option
Key ↓
1. ARahul - Priya - Amit
2. BPriya - Rahul - Amit
3. CAmit - Rahul - Priya
4. DPriya - Amit - Rahul
Q2MCQ3 Marks·Choose one option
Key ↓
1. A['Amit', 'Chirag']
2. B['CHIRAG', 'AMIT']
3. C['AMIT', 'CHIRAG']
4. D['AMIT', 'Bhavna', 'CHIRAG']
Q3MSQ3 Marks·Choose all correct options
Key ↓
1. A
2. B
3. C
4. D
Q4MSQ3 Marks·Choose all correct options
Key ↓
1. AA
2. BB
3. CC
4. DNone
Q5MCQ4.5 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q6MSQ4.5 Marks·Choose all correct options
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
5. E

End Term · 31 Aug 2025 (FN)End Term

Q7MCQ3 Marks·Choose one option
Key ↓
1. Aobject, undefined, true, false
2. Bnull, undefined, false, false
3. Cobject, undefined, false, false
4. Dnull, undefined, true, true
Q8MCQ3 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
Q9MCQ4.5 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D

End Term · 31 Aug 2025 (AN)End Term

Q10MCQ3 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D

End Term · 22 Dec 2024 (FN)End Term

Q11MCQ3 Marks·Choose one option
Asked 2 times Key ↓
1. AHello, John TypeError: john.greet is not a function
2. BHello, John Hello, undefined
3. CTypeError: john.greet is not a function TypeError: john.greet is not a function
4. DHello, John Hello, John
Q12MCQ3 Marks·Choose one option
Key ↓
1. AIt will display the indices, values and types of all the items of the array.
2. BIt will throw error on the console for the very first iteration.
3. CIt will display the index, value and type of the value for the first item of array and then will throw error for the next value.
4. DNone of these.
Q13MCQ4.5 Marks·Choose one option
Key ↓
1. AChild Parent GrandParent
2. BChild
3. CGrandParent Parent Child
4. DNone of these
Q14MCQ4.5 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q15MSQ3 Marks·Choose all correct options
Key ↓
1. A
2. B
3. C
4. D

End Term · 22 Dec 2024 (AN)End Term

Q16MCQ3 Marks·Choose one option
Asked 2 times 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

Q1B

Q2C

Q3B, D

Q4A, B, C

Q5B

Q6A, B, D

Q7A

Q8A

Q9A

Q10C

Q11D

Q12C

Q13C

Q14C

Q15B, C

Q16C

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.