Python Variables Quiz

What is a variable in Python?

• An ordered set of instructions

• An identifier whose value can change

• A fixed numeric value

• A built-in function

Which of the following is an invalid identifier name for a variable in Python?

• total_Marks

• _Percentage

• 1st_Room

• marksMaths

How are new variables created and assigned specific values in Python?

• By using a define keyword

• By using an assignment statement

• By declaring them with a specific data type beforehand

• Variables are automatically created when first mentioned

What happens if a variable is used in a Python program before it has been assigned a value?

• It defaults to a value of 0.

• It automatically assigns the value None.

• The program skips the statement.

• It leads to an error.

Which of the following types of values can a variable hold in Python?

• Strings

• Numbers

• Alphanumeric combinations

• All of the above

In the expression 10 + num, what does the + sign represent?

• An operand

• A variable

• An operator

• A constant

What is the output of the Python expression 13 // 5?

• 2.6

• 3

• 2

• 0

Which Python operator is used to raise a base to the power of an exponent?

• /

• %

• **

• //

What is the result of concatenating two strings using the + operator, for example str1 = "Hello" and str2 = "India", and then str1 + str2?

• 'Hello India'

• 'HelloIndia'

• An error, as strings cannot be added

• The strings are converted to numbers before addition

What is the output of the Python expression num1 == 10 and num2 == 10 if num1 = 10 and num2 = -20?

• True

• False

• Error

• None