Page 82 - CA_Blue( J )_Class9
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}
                        }
                       (i)  What will be the output of the program?
                          a.  Sum: 15, Difference: 5, Product: 50, Quotient: 2, Remainder: 0
                          b.  Sum: 15, Difference: 5, Product: 50, Quotient: 2, Remainder: 5
                          c.  Sum: 15, Difference: 5, Product: 50, Quotient: 1, Remainder: 0
                          d.  Sum: 10, Difference: 5, Product: 50, Quotient: 2, Remainder: 1
                    Ans.  a. Sum: 15, Difference: 5, Product: 50, Quotient: 2, Remainder: 0
                      (ii)  How many operators’ types are used here?
                          a.  2 types                                b.  3 Types
                          c.  1 Type                                 d.  None of these
                    Ans.  a. 2 Types (Arithmetic and Assignment)

                  E.  Assertion and Reasoning based questions.
                      The following questions consist of two statements – Assertion (A) and Reason (R). Answer these questions by selecting
                      the appropriate option given below:
                      a.  Both A and R are true, and R is the correct explanation of A.
                      b.  Both A and R are true, but R is not the correct explanation of A.
                      c.  A is true, but R is false.
                      d.  A is false, but R is true.
                      1.  Assertion(A): In Java, a local variable must be initialized before it is used.
                          Reason(R): Local variables in Java are automatically initialized to default values.
                    Ans. c.  Assertion (A) is true, but Reason (R) is false.
                      2.  Assertion  (A): Object-Oriented Programming (OOP)  promotes better  code reusability  compared to  Procedural
                         Oriented Programming (POP).
                         Reason (R): OOP allows the creation of classes that can be instantiated multiple times, enabling the reuse of code
                         with different objects.
                    Ans. a.  Both A and R are true, and R is the correct explanation of A.
                      3.   Assertion (A): Identifiers in Java can start with a letter, underscore, or dollar sign.
                         Reason (R): Identifiers in Java can contain special characters such as @, #, or !.
                    Ans.  c. Assertion (A) is true, but Reason (R) is false.


                       Unsolved Questions



                  A.  Tick ( ) the correct answer.
                      1.  Number of alphabets used in java code is ………………….
                         a.  26                                      b.  32
                         c.  52                                      d.  Both a and c
                      2.  What is the default value of a boolean data type in Java?
                         a.  true                                    b.  false
                         c.  0                                       d.  null
                      3.  What type of token is + in Java?
                         a.  Keyword                                 b.  Literal
                         c.  Operator                                d.  Identifier
                      4.  Java has a total of ………………… escape sequences.
                         a.  seven                                   b.  five
                         c.  eight                                   d.  twelve



                    80    Touchpad Computer Applications-IX
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