Python Introduction and Python Conditional Statements, Class 8 Artificial Intelligence Question and Answer notes

 

🧠 Class 8 Artificial Intelligence Worksheet

📘 Chapter 1: Python Introduction

📗 Chapter 2: Python Conditional Statements

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🔹 Section A — Textual Questions and Answers

Q1. What is Python?

Answer:
Python is a high-level, interpreted programming language used for general-purpose programming. It is easy to learn, read, and write because of its simple syntax.

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Q2. List any four features of Python programming.

Answer:

1. Easy to learn and use

2. Open-source and free

3. Portable and platform independent

4. Large standard library and community support

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Q3. What is an Interpreter in Python?

Answer:
An interpreter is a program that executes Python code line by line, translating it into machine language directly without the need for compilation.

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Q4. What is IDLE in Python?

Answer:
IDLE (Integrated Development and Learning Environment) is the default editor that comes with Python. It provides an interface to write, run, and debug Python programs.

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Q5. What is the difference between Python Shell and Script Mode?

Answer:

• Shell Mode: Executes Python commands one at a time (interactive).

• Script Mode: Used for writing and saving programs that can be executed later as a complete file.

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Q6. What are Lines and Indentation in Python?

Answer:
In Python, indentation (spaces at the beginning of a line) is used to define code blocks instead of braces {}. Proper indentation is necessary for the code to run correctly.

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Q7. What are Identifiers in Python?

Answer:
Identifiers are names used to identify variables, functions, classes, or other objects in Python.
Example: age, total_sum, printData

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Q8. What are Keywords in Python?

Answer:
Keywords are reserved words in Python that have a special meaning and cannot be used as identifiers.
Example: if, else, for, while, def, return

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Q9. What are Literals?

Answer:
Literals are constant values assigned to variables.
Example: 10, 'Hello', 3.14, True

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Q10. What are Operators? Give examples.

Answer:
Operators are special symbols used to perform operations on variables and values.
Example:
+ (Addition), - (Subtraction), * (Multiplication), / (Division)

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Q11. What are Variables in Python?

Answer:
Variables are used to store data values. Python automatically creates a variable when you assign a value to it.
Example:
x = 10

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Q12. What are Delimiters in Python?

Answer:
Delimiters are symbols used to separate statements or indicate grouping in Python.
Examples:
( ), [ ], { }, :, ,, =, ;

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Q13. What is the use of the input() function in Python?

Answer:
input() function allows the user to enter data from the keyboard during program execution.
Example:
name = input("Enter your name: ")

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Q14. What is the use of the print() function in Python?

Answer:
print() function is used to display output on the screen.
Example:
print("Welcome to Python")

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🔹 Section B — Python Conditional Statements

Q1. What are Conditional Statements in Python?

Answer:
Conditional statements allow a program to make decisions and execute different code based on certain conditions.

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Q2. What are the types of Conditional Statements in Python?

Answer:

1. if statement

2. if...else statement

3. if...elif...else statement

4. Nested if statement

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Q3. Write an example of an if statement.

Answer:

age = 18
if age >= 18:
    print("You are eligible to vote.")

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Q4. Write an example of an if...else statement.

Answer:

num = 10
if num % 2 == 0:
    print("Even number")
else:
    print("Odd number")

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Q5. Write an example of an if...elif...else statement.

Answer:

marks = 85
if marks >= 90:
    print("Grade A")
elif marks >= 75:
    print("Grade B")
else:
    print("Grade C")

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Q6. What is a Nested if statement?

Answer:
A Nested if statement means using one if inside another if block to check multiple conditions.

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🔹 Section C — Extra Short Answer Questions (1–2 Marks)

1. Who developed Python?
   Answer: Guido van Rossum

2. In which year was Python developed?
   Answer: 1991

3. Name two data types in Python.
   Answer: Integer, String

4. What symbol is used for comments in Python?
   Answer: # (hash symbol)

5. Write the output of:

   print(2 + 3 * 4)
   

   Answer: 14

6. What is the output of print("AI" * 3)?
   Answer: AIAIAI

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🔹 Section D — Long Answer Questions (5–6 Marks)

Q1. Explain any five features of Python with examples.

Answer:

1. Easy to Learn: Simple English-like syntax.
   Example: print("Hello")

2. Interpreted Language: Executes line by line.

3. Portable: Works on Windows, Mac, and Linux.

4. Extensive Libraries: Has built-in modules like math, random, etc.

5. Object-Oriented: Supports classes and objects.

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Q2. Explain different types of conditional statements with examples.

Answer:
Python provides four main conditional statements:

• if → Executes a block if condition is true.

• if...else → Executes one block if true, another if false.

• if...elif...else → Multiple condition checking.

• Nested if → Condition inside another if.

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🔹 Section E — Multiple Choice Questions (MCQs)

1. Python was developed by _______.
   a) Dennis Ritchie
   b) James Gosling
   ✅ c) Guido van Rossum
   d) Charles Babbage

2. Which of the following is a Python keyword?
   a) value
   ✅ b) while
   c) main
   d) print

3. What is the correct file extension for Python files?
   ✅ a) .py
   b) .pt
   c) .python
   d) .p

4. Which of the following is used for comments in Python?
   ✅ a) #
   b) //
   c) /* */
   d) !

5. What is the output of print(5 > 3)?
   ✅ a) True
   b) False
   c) Error
   d) None

6. Which function is used to get input from the user?
   a) scan()
   ✅ b) input()
   c) get()
   d) type()

7. In an if statement, the condition must return:
   ✅ a) True or False
   b) 0 or 1
   c) Number
   d) Character

8. Which symbol is used for assignment in Python?
   ✅ a) =
   b) ==
   c) :=
   d) =>