Data Types and Variables Quiz - CBSE Class 10 Computer Science

Free practice quiz: Data Types and Variables (CBSE Class 10 Computer Science). 37 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is a variable in Python?

   1. A place to store a value
   2. A data type
   3. A function
   4. An error
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   Answer: A. A place to store a value

   A variable is used to store data or values in a program. In Python, a variable can hold different data types.

2. Which keyword is used to define a variable in Python?

   1. var
   2. let
   3. def
   4. None
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   Answer: D. None

   Python does not use a specific keyword to define a variable. A variable is created by assigning a value to it.

3. What will be the output of: bool([])?

   1. True
   2. False
   3. Error
   4. None
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   Answer: B. False

   In Python, empty collections (like empty lists) evaluate to False when converted to a boolean.

4. Which of the following statements is true about string data type in Python?

   1. Strings are mutable.
   2. Strings can store numerical values only.
   3. Strings are immutable.
   4. Strings can only use single quotes.
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   Answer: C. Strings are immutable.

   In Python, strings are immutable, meaning that once created, their content cannot be changed.

5. How are negative indexes used in Python lists?

   1. To access elements in reverse order
   2. To throw an error
   3. To declare null values
   4. To replace elements
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   Answer: A. To access elements in reverse order

   Negative indexes in Python lists start counting from the end of the list, allowing reverse accessing of elements.

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