Ruby Variables MCQ

11. Instance variables in ruby begin with?

A. @
B. #
C. $
D. &

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12. Class variables in ruby begin with?

A. @
B. #
C. double @
D. ##

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13. Default value of class variables is?

A. nil
B. infinite
C. -1
D. error

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14. Constants in ruby begin with ?

A. Lowercase
B. !
C. !
D. Uppercase

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15. Which of the following Ruby Pseudo Variables is used to return the name of the current source file?

A. _FILE_
B. _CURRENT_
C. _LINE_
D. None of the above

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16. Why notation is used in Ruby?

A. Formfeed
B. Escape
C. Carriage return
D. Bell

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17. Why can not we use quotation marks ("or") with boolean?

A. It indicates that we are talking about a string
B. It indicates that we are assining a value
C. It indicates that that we are replacing boolean data type with string data type
D. None of the above

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18. What is the output of the given code?

my_string=Ruby
puts(my_string)

A. Ruby
B. Nil
C. Error
D. my_string

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19. Which type of number(0b1011 ) is ?

A. Octal
B. Hexadecimal
C. Binary
D. Decimal

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20. Objects of which class does the integer from the range -2^30 to 2^(30-1) belong to?

A. Octal
B. Bignum
C. Fixnum
D. Binary

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