Python -Variables and Operators Additional Practice Test

12th Standard Computer Science — Python -Variables and Operators: Additional Online Practice Test

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Which of the following is an invalid identifier in Python because it contains an illegal punctuation character?

A.total_marks B.num1 C.name\$ D._Sum

In Python, which of the following operators is used for performing floor division?

A./ B.% C.// D.**

Which built-in function is used to explicitly convert a string input containing a numerical value into an integer in Python?

A.str() B.float() C.int() D.input()

How does the Python interpreter treat lines that begin with the hash symbol (#)?

A.They are executed as high-priority commands. B.They are treated as comments and ignored by the interpreter. C.They are used to define block structures instead of indentation. D.They are flagged as syntax errors during execution.

In Python, what character sequence is used to enclose multiline comments?

A.// B.# C.''' (triple quotes) D./* and */

Which of the following escape sequences is used to represent a carriage return in Python strings?

A.\\n B.\\t C.\\r D.\\\\

Which number representation is denoted by prefixing an integer with the digit 0 followed by the letter 'o' (such as 0o102) in Python?

A.Binary integer B.Octal integer C.Hexadecimal integer D.Long decimal integer

What is the correct syntax for the conditional (ternary) operator in Python?

A.Variable Name = [Test expression] ? [on_true] : [on_false] B.Variable Name = [on_true] if [Test expression] else [on_false] C.Variable Name = if [Test expression] then [on_true] else [on_false] D.Variable Name = [on_true] else [on_false] if [Test expression]

Given the variable values a = 97 and b = 35, what will be the result of the logical expression: not a > b in Python?

A.True B.False C.None D.SyntaxError

Q10

Python identifiers are case-sensitive. Which of the following is true regarding two identifiers named Sum and sum?

A.They are treated as identical by the interpreter. B.They are recognized as two distinct, different identifiers. C.They will cause a compilation error if used in the same program. D.The interpreter automatically converts Sum to lowercase sum.

Q11

Which of the following is a valid example of exponent data representation for floating-point numbers in Python?

A.12.E04 B.12L C.0o12 D.0X12

Q12

Which of the following characters is NOT used as a delimiter in Python expressions, lists, dictionaries, or strings?

A.: B.; C.\$ D.,

Q13

When using Python IDLE in interactive mode, what will be the output of evaluating the expression 5 ** 2?

A.10 B.25 C.2.5 D.50

Q14

Which of the following characters can a Python identifier legally begin with?

A.Only lowercase alphabets B.Only uppercase alphabets C.An alphabet (A..Z or a..z) or an underscore (_) D.Any alphanumeric character including digits

Q15

If the initial value of x is 10, what will be the value of x after executing the compound assignment statement x += 20?

A.10 B.20 C.30 D.200

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About this Python -Variables and Operators test

This free online practice test covers Python -Variables and Operators from the 12th Standard Computer Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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