Computer Science with Python Class XI Quiz

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Questions and Answers

What programming language is used in the textbook provided?

Python

Python is a compiled language.

False (B)

What are the two main types of working modes in Python?

  • Interactive and Script (correct)
  • Compile and Script
  • Script and Batch
  • Interactive and Compile

What is the term used for a single line comment in Python?

<p>Hash symbol (#)</p> Signup and view all the answers

Which of the following is NOT a valid identifier in Python?

<p>break (C)</p> Signup and view all the answers

What is the name of the function that displays output in Python?

<p>print()</p> Signup and view all the answers

Which of the following is a valid string literal in Python?

<p>Hello World (B)</p> Signup and view all the answers

What is the purpose of the 'in' operator in Python?

<p>Membership checking</p> Signup and view all the answers

Python is a case-sensitive language.

<p>True (A)</p> Signup and view all the answers

What are the four basic elements of a Python program?

<p>Expressions, statements, comments, and indentation</p> Signup and view all the answers

What is the difference between a variable and an identifier?

<p>An identifier is a name given to a variable, function, or other object in a program, while a variable is a named storage location that holds a value.</p> Signup and view all the answers

Variables in Python are mutable.

<p>True (A)</p> Signup and view all the answers

What is the main purpose of a conditional statement in Python?

<p>To control the flow of execution based on a condition.</p> Signup and view all the answers

What is the main purpose of an iteration statement in Python?

<p>To execute a set of statements repeatedly.</p> Signup and view all the answers

What is the purpose of the range() function in Python?

<p>To generate a sequence of numbers (C)</p> Signup and view all the answers

Which of the following is a valid use of the 'in' operator?

<p>3 in [3,4,5] (A), 3 in range(5) (B)</p> Signup and view all the answers

What is the difference between a 'for' loop and a 'while' loop in Python?

<p>'for' loop iterates over a sequence of values a specified number of times, 'while' loop continues until a condition becomes False.</p> Signup and view all the answers

What is the purpose of the break statement in a loop?

<p>To exit the loop prematurely.</p> Signup and view all the answers

What is the purpose of the continue statement in a loop?

<p>To skip the current iteration of the loop and jump to the next one.</p> Signup and view all the answers

What is meant by 'nesting' of loops?

<p>A loop inside the body of another loop.</p> Signup and view all the answers

What are the three main types of data in Python?

<p>Numbers, strings, and sequences</p> Signup and view all the answers

What is the difference between mutable and immutable data types in Python?

<p>Mutable data types allow their values or elements to be changed 'in place', while immutable data types do not.</p> Signup and view all the answers

Which of the following is an immutable data type in Python?

<p>Tuple (B)</p> Signup and view all the answers

What are the three main types of operators in Python?

<p>Arithmetic, relational, and logical operators</p> Signup and view all the answers

The division operator '/' in Python always returns a floating-point number.

<p>True (A)</p> Signup and view all the answers

What is the difference between '==' and 'is' operators in Python?

<p>The '==' operator checks for equality of values, while 'is' operator checks for identity (whether two variables refer to the same object in memory).</p> Signup and view all the answers

What are the main features of a dictionary in Python?

<p>Collections of key-value pairs, unordered, and mutable.</p> Signup and view all the answers

What is the purpose of the 'len()' function in Python?

<p>To return the length of a sequence.</p> Signup and view all the answers

What is the difference between a list and a tuple in Python?

<p>Lists are mutable, tuples are immutable.</p> Signup and view all the answers

Python allows you to sort a list 'in place' using the sort() method.

<p>True (A)</p> Signup and view all the answers

What is the purpose of a sorting algorithm?

<p>To arrange items in a specific order.</p> Signup and view all the answers

Which of the following sorting algorithms is known for its efficiency with smaller datasets?

<p>Insertion Sort (B)</p> Signup and view all the answers

What is the purpose of a 'for' loop in a nested loop structure?

<p>It iterates over each element in the outer sequence, and the inner loop executes for each iteration of the outer loop.</p> Signup and view all the answers

What is the purpose of debugging in programming?

<p>To identify and fix errors in a program.</p> Signup and view all the answers

Syntax errors are usually easier to detect and correct than runtime errors.

<p>True (A)</p> Signup and view all the answers

What is the purpose of exception handling in programming?

<p>To provide a controlled way to handle errors and unexpected events that occur during program execution.</p> Signup and view all the answers

What are the keywords used for exception handling in Python?

<p>try, except, else, and finally.</p> Signup and view all the answers

What is the purpose of the 'append()' method in Python?

<p>To add an element to the end of a list.</p> Signup and view all the answers

What is the purpose of the 'remove()' method in Python?

<p>To remove the first occurrence of a specific value from a list.</p> Signup and view all the answers

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Flashcards

Symbol

A symbol or representation used to denote a specific concept or entity.

Semiotics

The study of signs and systems of signification.

Signification

The core idea or message conveyed by a symbol or text.

Semiotic Relationship

A relationship between a sign (symbol) and its signified (concept).

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Denotation

The literal meaning of a symbol or text.

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Connotation

The implied or suggestive meaning of a symbol or text.

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Code

The cultural context and shared understanding that influences the interpretation of symbols.

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Language

A system of signs that convey meaning through their arrangement.

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Pragmatics

The study of how language is used in social contexts.

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Sign

An object, event, or image that represents a specific idea or concept.

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Study Notes

Computer Science with Python Textbook for Class XI

  • The textbook is for Class XI students, following the CBSE curriculum.
  • It covers four units: Programming & Computational Thinking, Computer System & Organization, Data Management, and Society, Law, and Ethics.
  • Unit 1: Programming and Computational Thinking (PCT-1) covers Python basics, fundamentals, conditional and iterative constructs, strings, lists, tuples, dictionaries, sorting and program debugging techniques.
  • Unit 2: Computer Systems and Organization (CSO) covers basic computer organization, boolean logic, data representation, and program execution.
  • Unit 3: Data Management (DM-1) discusses relational database concepts, SQL basics, table creation, manipulation, querying and indexes. It also covers the basics of NoSQL databases like MongoDB.
  • Unit 4: Society, Law, and Ethics (SLE-1) covers cyber safety basics, social networking guidelines, and data security.
  • The book includes practice exercises and a practical book ('Progress In') for additional practice to further reinforce the concepts.

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