Ruby MCQ On Operators

This section focuses on "Operators" in Ruby. These Multiple Choice Questions (mcq) should be practiced to improve the Ruby skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. Which of the following is not type of operator in ruby?

A. Arithmetic Operators
B. Comparison Operators
C. Similar operator
D. Parallel Assignment

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2. Which operator is used to find exponent in ruby?

A. *
B. **
C. ^
D. %

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3. eql? Operator is used for?

A. Used to test equality within a when clause of a case statement.
B. if the receiver and argument have both the same type and equal values.
C. if the receiver and argument have the same object id.
D. All of the above

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4. equal? Operator is used for?

A. Used to test equality within a when clause of a case statement.
B. if the receiver and argument have both the same type and equal values.
C. if the receiver and argument have the same object id.
D. All of the above

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5. Which of the following is not a type of Bitwise Operators?

A. <<
B. ^
C. ~
D. None of the above

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6. Guess the operator : If Condition is true ? Then value X : Otherwise value Y?

A. Range Operators
B. Ternary Operator
C. Parallel Operator
D. Arithmetic operator

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7. In range operator ... is used for ?

A. Creates a range from start point to end point inclusive.
B. Creates a range from start point to end point exclusive.
C. Creates a range from start point inclusive to end point exclusive.
D. Creates a range from start point exclusive to end point inclusive.

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8. Which operator is used to check variable and method are defined or not?

A. define
B. define?
C. defined?
D. defined

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9. Among the following which operator has highest Precedence?

A. ::
B. .
C. []
D. **

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10. Among the following which operator has lowest Precedence?

A. .
B. ^
C. ...
D. >>

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11. What will be the output of the given code?

boolean_var = 15 < 16 && 15 < 15
puts boolean_var

A. TRUE
B. FALSE
C. Type Error
D. Syntax Error

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12. What will be the output of the given code?

num=4<<2
puts num

A. 4
B. 8
C. 16
D. 32

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13. What will be the output of the given code?

num=4>>2
puts num

A. -2
B. 0
C. 2
D. 1

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14. What will be the output of the given code?

num=(10<11)||(11===11)? (11===11.0): 0
puts num

A. TRUE
B. FALSE
C. 1
D. 0

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15. What will be the output of the given code?

boolean_var = 3**2 != 2**3 || true
puts boolean_var

A. TRUE
B. FALSE
C. 1
D. 0

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16. What will be the output of the given code?

boolean_var = false || -20 > -18
puts boolean_var

A. TRUE
B. FALSE
C. Type Error
D. Syntax Error

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17. What will be the output of the given code?

 boolean_var = !(100 / 10 === 10)
puts boolean_var

A. TRUE
B. FALSE
C. Type Error
D. Syntax Error

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18. What will be the output of the given code?

boolean_var = !true || (true || 36 != 6**2)
puts boolean_var

A. TRUE
B. FALSE
C. Error
D. None of the above

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19. What will the following expression evaluate to?

true || false

A. TRUE
B. FALSE
C. Syntax Error
D. None of the above

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20. What will the following expression evaluate to?

!true && !false

A. TRUE
B. FALSE
C. Syntax Error
D. None of the above

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