CLASS -12 TH

PRACTICAL QUESTIONS WITH ANSWERS 

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SET-1

SET -2

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Project Report

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         Last Date  25th November 2025

          

PRACTICE SETS

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Solution Python revision tour

Solution DFH worksheet

Solution RDBMS

Solution SQL

Function  with solution

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Syllabus 2025-26

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Sample question papers with marking scheme (PYQ)

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Sample question 2025-26

MS 2025-26

Sample Question 2024-25

MS 2024-25

Sample Question 2023-24

MS 2023-24

Question 2021-22(Term-1)

MS 2021-22(Term-1)

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Case Based Study Questions

MCQ questions class -12

Output based questions

Computer Networks

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New

Network protocols

Networking (Communication Media)

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Notes on Computer Network

Networking layouts questions

Networking Topologies

Abbreviations related to computer network

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CS SYNOPSIS

Practicals(NEW)

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Dear Students,

 Practical Experiments 17 to 20

Experiment -17

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Two files "part1.txt" and "part2.txt" together contain a full essay.

Write a program to:

1. Merge both files into "fullessay.txt"

2. Count the number of sentences

3. Display the longest sentence

4. Count the frequency of each word (case-insensitive)

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Sample Input Files

part1.txt

Artificial Intelligence is transforming the world. It helps in automation.

part2.txt

AI also improves decision making. Many industries depend on it.

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Program

# Step 1: Merge the files

f1 = open("part1.txt", "r")

f2 = open("part2.txt", "r")

f3 = open("fullessay.txt", "w")

content = f1.read() + " " + f2.read()

f3.write(content)

f1.close()

f2.close()

f3.close()

# Step 2: Sentence count

sentences = content.split(".")

sentences = [s.strip() for s in sentences if s.strip() != ""]

print("Total Sentences:", len(sentences))

# Step 3: Longest sentence

longest = max(sentences, key=len)

print("Longest Sentence:", longest)

# Step 4: Word frequency

words = content.lower().replace(".", "").split()

freq = {}

for w in words:

    freq[w] = freq.get(w, 0) + 1

print("Word Frequency:")

for k, v in freq.items():

    print(k, ":", v)

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Output

Total Sentences: 4

Longest Sentence: Artificial Intelligence is transforming the world

Word Frequency:

artificial : 1

intelligence : 1

is : 1

transforming : 1

the : 1

world : 1

it : 2

helps : 1

in : 2

automation : 1

ai : 1

also : 1

improves : 1

decision : 1

making : 1

many : 1

industries : 1

depend : 1

on : 1

Experiment -18

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A CSV file "attendance.csv" contains:

Name,Days_Present,Days_Total

Write a Python program to:

1. Display all records

2. Calculate attendance percentage for each student

3. Count students with attendance below 75

4. Display the student with highest attendance

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attendance.csv

Amit,180,200

Riya,150,200

John,198,200

Meena,120,200

Tara,175,200

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Program

import csv

f = open("attendance.csv", "r")

reader = csv.reader(f)

low_count = 0

best_name = ""

best_percent = 0

print("Attendance Report:")

for row in reader:

    name, present, total = row

    present = int(present)

    total = int(total)

    

    percent = (present / total) * 100

    print(name, ":", percent, "%")

    if percent < 75:

        low_count += 1

    if percent > best_percent:

        best_percent = percent

        best_name = name

f.close()

print("Students below 75%:", low_count)

print("Highest Attendance:", best_name, "-", round(best_percent, 2), "%")

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Output

Attendance Report:

Amit : 90.0 %

Riya : 75.0 %

John : 99.0 %

Meena : 60.0 %

Tara : 87.5 %

Students below 75%: 1

Highest Attendance: John - 99.0 %

Experiment -19

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A binary file "library.dat" stores:

[BookID, Title, Author, Copies]

Write a program to:

1. Create the file

2. Count how many books have less than 5 copies

3. Increase copies of a book given by BookID

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Program

import pickle

# Step 1: Create file

books = [

    [101, "Python", "Guido", 3],

    [102, "AI Basics", "Russell", 10],

    [103, "Data Science", "James", 2]

]

f = open("library.dat", "wb")

pickle.dump(books, f)

f.close()

# Step 2: Count books with <5 copies

f = open("library.dat", "rb")

data = pickle.load(f)

f.close()

count = 0

for b in data:

    if b[3] < 5:

        count += 1

print("Books with less than 5 copies:", count)

# Step 3: Update copies

bid = int(input("Enter Book ID to add copies: "))

new_list = []

for b in data:

    if b[0] == bid:

        b[3] += 1   # increase copy by 1

    new_list.append(b)

# Write back

f = open("library.dat", "wb")

pickle.dump(new_list, f)

f.close()

print("Updated Successfully")

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Output Example

Books with less than 5 copies: 2

Enter Book ID to add copies: 101

Updated Successfully

Experiment -20