20 Best Objective for Class 12th JAC Board Exam

 

1) C++ is developed by

(i) Dennis Ritchie              (ii) ken Thompson           (iii) martin Richard           (iv) Bjarne Stroustrup

Ans:- (iv)

2) String Terminator character is  

(i) ‘/0’                                    (ii) ‘/n’                                  (iii) ‘\b’                                 (iv) none of these

Ans:- (i)

3) DBMS Stand for

(i) Database management system           

(ii) Database manual system

(iii) Define management system

(iv) None of these

Ans:- (i)

4.) The smallest individual unit in

(i) Semicolon                      (ii) Data type                      (iii) Token            (iv) Keyword

Ans:- (iii)

5) The process of finding the location of the particular element in the array is called

(i) Traversal                        (ii) searching                      (iii) Sorting                          (iv) None of these

Ans:- (ii)

6) The Boolean expression A.(B+C)=AB+AC is

(i) Associative law            (ii) Commutative law      (iii) Absorption law          (iv) Distributive law

Ans:- (iv)

7) Destructor name is preceded by

(i) !                                         (ii) #                                       (iii) $                                      (iv) ~

Ans:- (iv)

8) main is a/an

(i) Object                             (ii) Function                        (iii) Literals                          (iv) none of these                            Ans:- (ii)

9) The term ‘attribute’ refers to a

(i) Table                                (ii) Row                                 (iii) Column                         (iv) Relation

Ans:- (iv)

10) Fstream class is used for

(i) Input operation                                           (ii) Output operation

(iii) Input/OutputOperaton                         (iv) none of these

Ans:- (iii)

11) Do….While loop checks the condition on

(i) Top                                   (ii) Bottom                          (iii) middle                           (iv) none of these

Ans:- (ii)

12) Constructor

(i) are function                                                  (ii) have the same name as that of the class

(iii) have no return type                                                (iv) all of these                                                                                                  Ans:- (ii)

13) An inline function is

(i) Prefixed with keyword inline                                (ii)declared and defined inside the class

(iii) prefixed with inline the header          (iv) all of these

Ans:- (i)

14) Number of tuples in a relation is called

(i) degree                                                            (ii) Cardinality

(iii) Attribute                                                      (iv) none of these

Ans:- (i)

15) The duplication of data is known as

(i) Data redundancy                                        (ii) Data Inconsistency

(iii) Data Security                                              (iv) none of these

Ans:- (i)

16) A set of arithmetic operators

(i) +, -, *, /, %                                                     (ii) >, <, >=, <=, ==, !=

(iii) &&, ||, !                                                       (iv) ? :

Ans:- (i)

17) The operation that involves accessing the nodes of the list in order to perform some processing on them is

(i) Inserting                                                         (ii) Deleting

(iii) Searching                                                     (iv) traversing                                                                                                    Ans:-  (iv)

18) The keyword is

(i) an identifiers                                                                (ii) in lower case alphabets

(iii) reserved for instructions only             (iv) none of these

Ans:- (iii)

19) Web Browser  is

(i) Google Chrome                                           (ii) Firefox

(iii) Internet Explorer                                      (iv) All of these

Ans:- (iv)

20) In protected inheritance, a public data member of the base class will be treated in a derived class as

(i) public                                                               (ii) Private

(iii) Protected                                                    (iv) none of these

Ans:- (ii)

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