HBSE Class 11 Question Paper 2021 Computer Science

Code No. 1507
CLASS : 11th (Eleventh) Series : 11-April/2021
Roll No.











dEI;wVj foKku
COMPUTER SCIENCE
[ fgUnh ,oa vaxzsth ek/;e ]
[ Hindi and English Medium ]
(Only for Fresh/School Candidates)

le; : 2 21 ?k.Vs ] [ iw.kk±d : 40

Time allowed : 2 21 hours ] [ Maximum Marks : 40

• Ñi;k tk¡p dj ysa fd bl iz'u-i= esa eqfnzr i`"B 4 rFkk iz'u 28 gSaA
Please make sure that the printed pages in this question paper are 4 in number and
it contains 28 questions.
• iz'u-i= esa lcls Åij fn;s x;s dksM uEcj dks Nk= mÙkj-iqfLrdk ds eq[;-i`"B ij fy[ksaA
The Code No. on the top of the question paper should be written by the candidate
on the front page of the answer-book.
• Ñi;k iz'u dk mÙkj fy[kuk 'kq: djus ls igys] iz'u dk Øekad vo'; fy[ksaA
Before beginning to answer a question, its Serial Number must be written.
• mÙkj-iqfLrdk ds chp esa [kkyh iUuk / iUus u NksMsa+A
Don’t leave blank page/pages in your answer-book.
• mÙkj-iqfLrdk ds vfrfjDr dksbZ vU; 'khV ugha feysxhA vr% vko';drkuqlkj gh fy[ksa vkSj fy[kk mÙkj u
dkVsaA
Except answer-book, no extra sheet will be given. Write to the point and do not
strike the written answer.
• ijh{kkFkhZ viuk jksy ua0 iz'u&i= ij vo'; fy[ksaA
Candidates must write their Roll Number on the question paper.
• d`i;k iz'uksa dk mÙkj nsus lss iwoZ ;g lqfuf'pr dj ysa fd iz'u-i= iw.kZ o lgh gS] ijh{kk ds mijkUr bl
lEcU/k esa dksbZ Hkh nkok Lohdkj ugha fd;k tk;sxkA
Before answering the question, ensure that you have been supplied the correct and
complete question paper, no claim in this regard, will be entertained after
examination.

1507 P. T. O.

(2) 1507
uksV % iz'u Øekad 1 ls 3 esa ls dksbZ 2 iz'u djsaA 'ks"k lHkh iz'u vfuok;Z gSaA
Attempt any 2 questions from question number 1 to 3. Rest are compulsory.

1. bugsfjVsal vkSj vkWijsVj vksojyksfMax dk o.kZu djsaA 4
Explain inheritance and operator overloading.

2. çFke n uSpqjy uacj dks fçaV djus vkSj mudk tksM+ crkus ds fy, C++ esa çksxzke fy[ksaA 4
Write a program in C++ to print first n natural numbers and their sum.

3. OR xsV dk VªqFk Vscy] ykWftd bDos'ku vkSj lfdZV Mkbxzke lfgr o.kZu djsaA 4

Explain OR gate with truth table, logic equation and circuit diagram.

4. dEI;wVj ds ykHk o gkfu;k¡ crk,¡A 3
Give advantages and disadvantages of Computers.

5. C++ esa fjys'kuy vkWijsVj dk o.kZu djsaA 3
Explain relational operators in C++.

6. C++ esa fdUgha nks MkVk ekWfMQk;j dk o.kZu djsaA 2
Explain any two data modifiers in C++.

7. 1-MkbesU'kuy ,sjs dk o.kZu djsAa 2
Explain 1-Dimensional array.

8. NOT xsV dk VªqFk Vscy vkSj lfdZV Mkbxzke lfgr o.kZu djsaA 2

Explain NOT gate with truth table and circuit diagram.

Objective Type Questions
oLrqfu"B iz'u
9. ALU dk iw.kZ :i ------------ gSA 1
Full form of ALU is …………. .

10. EDVAC dk iw.kZ :i ------------ gSA 1
Full form of EDVAC is …………. .

(3) 1507
11. fo.Mks ,d ------------ flLVe gSA 1
Windows is a …………. system.

12. VªkaftLVj dEI;wVj dh ------------ tujs'ku esa vfo"dkj gqvk FkkA 1
Transistors were invented in …………. generation of Computers.

13. tkWu usfi;j us ------------ dk vkbfM;k fn;k FkkA 1
John Napier developed the idea of …………. .

14. ,e,l-oMZ esa isLV vkWI'ku ------------ eSU;w esa ekStwn gksrk gSA 1
In MS-Word paste option is present in …………. menu.

15. ,d MkD;qesaV dks lso djus dh 'kkVZdV ^dh* ------------ gSA 1
Shortcut 'key' to save a document is …………. .

16. ,e,l-oMZ esa dSjsDVj lkbt+ ------------ esU;w }kjk cnyk tkrk gSA 1
In MS-Word, character size is changed using …………. menu.

17. ,e,l-oMZ 2003 esa esyetZ ------------ esU;w esa ekStwn gksrk gSA 1
In MS-Word 2003, mail merge option is present in …………. menu.

18. (38)10 dks ckbujh flLVe esa cnysaA 1
Convert (38)10 into binary system.

19. (372)8 dks Mslhey flLVe esa cnysaA 1
Convert (372)8 into decimal system.

20. (9F )16 dks ckbujh flLVe esa cnysaA 1
Convert (9F )16 into binary system.

21. (1010110111)2 dks (..........)8 esa cnysaA 1
Convert (1010110111)2 into (..........)8 .

22. C++ esa ------------- vkmViqV vkWijsVj gSA 1
(A) << (B) >> (C) ?: (D) ::

1507 P. T. O.

(4) 1507
In C++, ……………. is output operator.
(A) << (B) >> (C) ?: (D) ::

23. C++ esa ------------- QaMkesaVy MkVk Vkbi ugha gSA 1
(A) int (B) char (C) float (D) array
……………. is not a fundamental data type in C++.
(A) int (B) char (C) float (D) array

24. ------------- esa leku MkVk Vkbi ds ,d ls T;knk vo;o gksrs gSaA 1
(A) LVªDpj (B) ,sjs (C) Dykl (D) dksbZ ugha
……………. holds multiple elements of same data type.
(A) structure (B) array (C) class (D) None

25. C++ esa daMh'kuy vkWijsVj (? :) dks ------------- vkWijsVj Hkh dgrs gSaA 1
(A) Unary (B) Binary (C) Ternary (D) None
In C++ conditional operators (? :) is also called ……………. operator.
(A) ;wujh (B) ckbujh (C) VuZjh (D) dksbZ ugha
26. ------------- ywi LVsVesaV ugha gSA 1
(A) If-else (B) For (C) While (D) Do-While
……………. is not a loop statement.
(A) If-else (B) For (C) While (D) Do-While

27. ,d ,sjs Float z[5] LVksjst ds fy, ------------- ckbV ysrk gSA 1
(A) 5 (B) 10 (C) 15 (D) 20
An array Float z[5] takes ……………. bytes for storage.
(A) 5 (B) 10 (C) 15 (D) 20

28. C++ ------------- }kjk cukbZ xbZ FkhA 1
C++ was developed by ……………. .

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