Completed

Class 12 CS – Text File Handling Live Challenge

Class 12 · Computer Science Sat, 19 Sep 2026 10:00 PM 60s / question 15 questions · 15 marks

Questions From This Challenge

Q1output1 mark

What will be the output of the following Python code if data.txt initially contains ABCDE?

with open("data.txt", "r+") as f:
    print(f.read(2))
    f.write("X")
    f.seek(0)
    print(f.read())

Correct output:

AB
ABXDE

Q2output1 mark

What will be the output of the following Python code?

with open("data.txt", "w+") as f:
    f.write("COMPUTER")
    f.seek(3)
    print(f.read(3))

Correct output: PUT

Q3output1 mark

What will be the output of the following Python code if data.txt initially contains HELLO?

with open("data.txt", "a+") as f:
    print(f.read())
    f.seek(0)
    print(f.read(2))

Correct output: HE

Q4output1 mark

A file contains the following text:

Python
Java
C++

What will be the output of the following code?

with open("data.txt", "r") as f:
    first = f.readline()
    second = f.readline()
    print(first.strip() + second.strip())

Correct output: PythonJava

Q5output1 mark

What will be the output of the following Python code if data.txt contains exactly:

ABCDE
FGHIJ
KLMNO

with open("data.txt", "r") as f:
    f.read(3)
    print(f.readline().strip())

Correct output: DE

Q6output1 mark

What will be the output of the following Python code?

with open("data.txt", "w") as f:
    f.write("ABCDEFGH")

with open("data.txt", "r") as f:
    f.seek(4)
    print(f.tell())
    print(f.read(2))

Correct output:

4
EF

Q7output1 mark

What will be the output of the following Python code if data.txt contains ABCDEFG?

with open("data.txt", "r") as f:
    f.read(2)
    print(f.tell())
    f.read(3)
    print(f.tell())

Correct output:

2
5

Q8output1 mark

What will be the output of the following Python code if data.txt initially contains PYTHON?

with open("data.txt", "r+") as f:
    f.seek(2)
    f.write("AB")
    f.seek(0)
    print(f.read())

Correct output: PYABON

Q9output1 mark

What will be the output of the following Python code?

with open("data.txt", "w+") as f:
    f.write("ABCDEFG")
    f.seek(2)
    f.write("XY")
    f.seek(0)
    print(f.read())

Correct output: ABXYEFG

Q10mcq1 mark

A file initially contains the text 12345. What will be the final content of the file after executing the following code? with open("data.txt", "a") as f: f.seek(0) f.write("AB")

AB12345

12345AB ✓

AB45

12345

Q11output1 mark

What will be the output of the following Python code?

with open("data.txt", "w") as f:
    f.writelines(["ABC\n", "DEF\n", "GHI"])

with open("data.txt", "r") as f:
    lines = f.readlines()
    print(len(lines))
    print(lines[1].strip())

Correct output:

3
DEF

Q12output1 mark

What will be the output of the following Python code if data.txt contains:

ABC
DEF
GHI

with open("data.txt", "r") as f:
    print(f.read(5))
    print(f.readline().strip())

Correct output:

ABC
D
EF

Q13output1 mark

What will be the output of the following Python code?

with open("data.txt", "w") as f:
    f.write("123456")

with open("data.txt", "r+") as f:
    f.seek(3)
    print(f.read(2))
    f.seek(1)
    f.write("XY")
    f.seek(0)
    print(f.read())

Correct output:

45
1XY456

Q14output1 mark

What will be the output of the following Python code if data.txt initially contains ABCDE?

with open("data.txt", "a+") as f:
    f.write("XY")
    f.seek(2)
    print(f.read(3))

Correct output: CDE

Q15output1 mark

What will be the output of the following Python code?

with open("data.txt", "w") as f:
    f.write("Python Programming")

with open("data.txt", "r+") as f:
    text = f.read()
    text = text.replace("Python", "Java")
    f.seek(0)
    f.write(text)

with open("data.txt", "r") as f:
    print(f.read())

Correct output: Java Programmingng

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Mixed: DML + Retrieval - Combined Application

Class 12 · Computer Science Fri, 23 Oct 2026, 9:00 PM

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