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CBSE Class 10 Question Paper 2026 NCC

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Page 1

FOR CBSE CLASS 10 EXAM PREPARATION

CBSE Class 10 2026
Question Paper · NCC
EXAM YEAR TYPE SUBJECT

CBSE Class 10 2026 Question Paper NCC

Notes · Sample Papers · Previous Year Papers · Mock Tests

Page 2

m
m .co

m .co s e m
se g l a
Series : LKM4N a SET~4

56
- 
Q.P. Code
 .
Roll No.  -   - 
-    
Candidates must write the Q.P. Code
m
.co
on the title page of the answer-book.
m
.co s e m
s em    l a
g l a
NATIONAL CADET CORPS (NCC)
ag
a
  : 3    : 70
Time allowed : 3 hours Maximum Marks : 70

 : NOTE :
(I)       -    (I) Please check that this question
23   paper contains 23 printed pages.

(II) -        - (II) omQ.P. Code given on the right hand
   -  -  m . c side of the question paper should be
 
la se written on the title page of the
answer-book by the candidate.
g
(III)       - a21  (III) Please check that this question
  paper contains 21 questions.

(IV)         , (IV) Please write down the serial
-        number of the question in the
answer-book at the given
  
place before attempting it.
m
.co
(V)
 -     15   (V) 15 minute time has been allotted
m     -    
c. o 10.15
to read this question paper. The
e m
question paper will be distributed
e m 10.30      10.15  
l as
at 10.15 a.m. From 10.15 a.m. to

l as    - 
ag
10.30 a.m., the candidates will
ag        -
      {}
read the question paper only and
will not write any answer on the
answer-book during this period.

~56~ 1168 1  P.T.O.

m .
.co s e m
s em l a
g la ag
a For more Question Papers, Sample Papers, Notes & Syllabus visit Page 1 of 24

Page 3

  :
(i)  -     
(ii) -I      
(iii) -II          
(iv)    ;       
(v) -     1, 2, 4  6    
(vi) 2      50      
(vii) 4      150      
(viii) 6      250      

 – I 49
( )
 – 
1.    : 11  1 = 11
(i)                ? 1
(A)  (B) 
(C)  (D) 
(ii)                1
(A)   (B)  
(C)   (D)   
(iii) .22        ? 1
(A) 5 (B) 6
(C) 8 (D) 10
(iv)            ? 1
(A)  (B)  
(C) - (D) 
(v)         ? 1
(A) 12 (B) 17
(C) 15 (D) 10

~56~ { } 2 

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 2 of 24

Page 4

m
m .co

m .co s e m
se g l a
General Instructions :
a
(i) The question paper consists of two sections.
(ii) Part-I is compulsory for all.
(iii) Part-II shall be attempted as per the chosen wing.
(iv) All questions are compulsory. Internal choices are given.
(v) The paper consists of 1, 2, 4 and 6 mark(s) questions.
m
(vi)
o m
The answer to 2 marks question should not exceed 50 words.
c m .co
m
(vii) The answer . to 4 marks question should not exceed 150 words. s e
s eanswer to 6 marks question should not exceed 250 words. l a
(viii) The
g l a ag
a PART-I 49
(Common Subjects)
SECTION – A

1. Choose the correct answer : 11  1 = 11
(i) Which of the following is NOT necessary for a good word of command ? 1
(A) Loudness om Pitch
(B)
c. (D)
(C) Tone
e m Timing
s
la salvage the damaged property and keep
(ii) This service is responsible to
it in safe custody.
ag 1
(A) Supply service (B) Salvage service
(C) Welfare service (D) Corpse disposal service
(iii) What is the magazine capacity of .22 Deluxe Rifle ? 1
(A) 5 (B) 6
(C) 8 (D) 10
(iv) Which of the following is not a core life skill ?
o m 1
m (A) Sympathy (B) Decision Making . c
c. o s e m
s em (v) Into how many directorates is the National Cadet Corps
(C) Self Awareness (D) Empathy
g l a organised ?
g la a 1
a (A) 12 (B) 17
(C) 15 (D) 10

~56~ { } 3  P.T.O.

m .
.co s e m
s em l a
g la ag
a For more Question Papers, Sample Papers, Notes & Syllabus visit Page 3 of 24

Page 5

(vi)            ? 1

(A)  (B) 

(C)  (D)  
(vii)              ? 1

(A)    (B)   
(C)    (D)   
(viii)      -  ? 1

(A)   (B) 
(C)  (D) 
(ix) ‘  ’         ? 1

(A) 15  (B) 20 

(C) 25  (D) 30 

(x)    (A)   (R)            
   : 1

 (A) :            
       
 (R) :              ,
,           
(A) (A)  (R)     (R), (A)     

(B) (A)  (R)   ,  (R), (A)      

(C) (A)  ,  (R)   

(D) (A)  ,  (R)   

(xi)        ? 1

(A) 1857 (B) 1957
(C) 1757 (D) 1657

~56~ { } 4 

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 4 of 24

Page 6

m
m .co

m .co s e m
se g l a
a
(vi) Which of the following is NOT a time waster ? 1
(A) Meeting (B) Visitors
(C) Telephone (D) Socializing
(vii) Which of the following is NOT a Centrally Organized Camp ? 1
(A) Thal Sainik Camp (B) Annual Training Camp
m
c o m
(C) Leadership Camp (D) Rock Climbing Camp
m .co
(viii) Which of .the following is an E-waste ? e
m as
1
(A) se l
l a Organic matter (B) Wood
ag
ag(C) Paper (D) Computers
(ix) What is the distance between the files in ‘Khuli line chal’ ? 1
(A) 15 inch (B) 20 inch
(C) 25 inch (D) 30 inch
(x) There are two statements marked as Assertion (A) and Reason (R).
Choose the correct answer from the options given below.
m
.co
Assertion (A) : Fire is the outcome of heating a combustible

s em
substance to the required temperature or igniting an
inflammable material.
g la
a
Reason (R) : Three things or conditions are necessary to start a fire
and sustain it, fuel, oxygen and sufficient heat to raise the
temperature of the fuel. 1
(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).
m
m .co
.co
(C) (A) is true, but (R) is false.
e m
e m (D) (A) is false, but (R) is true.
l as
las (xi) When was the battle of Plassey fought ? ag 1
ag (A) 1857 (B) 1957
(C) 1757 (D) 1657
~56~ { } 5  P.T.O.

m .
.co s e m
s em l a
g la ag
a For more Question Papers, Sample Papers, Notes & Syllabus visit Page 5 of 24

Page 7

 – 
2. (a)  .22            : 2
(i)  
(ii)   

(b)  .22 No II MK IV           :
(i)  
(ii)     

3. (a)             2

(b)         ?         
  ?
4. (a) “  ”        2

(b)             ?

5.             ? 2

6.     ? 2

7.           ?       
      2

8.                 ? 2

9. (a)                 ?
       4 (14)

(b)         

10.                 
                   4

11.         ‘’      ? 4

12.                    
  4

~56~ { } 6 

For more Question Papers, Sample Papers, Notes & Syllabus visit Page 6 of 24

Page 8

m
m .co

m .co s e m
se g l a
SECTION – B
a
2. (a) Mention the following characteristics about the Rifle ·22 Deluxe BA : 2
(i) Muzzle velocity
(ii) Grooves in the barrel
OR
(b) Mention the following characteristics about the Rifle ·22 No II MK
IV BA :
(i) Maximum range
m
m
(ii) Normal rate of fire
.co
.co s e m
3.
s em OR
(a) Write about any two objectives of the National Cadet Corps.
l2a
la is the National Cadet Corps Headquarters situated ? What isag
(b) gWhere
a the rank of the officer heading it ?
4. (a) Describe “Tin Disc Exercise” and its purpose. 2
OR
(b) What is the role of the Index finger in correct trigger control ?

5. What is physical abuse with regard to forms of child abuse ? 2

m
.co
6. What is civic responsibilities ? 2

7. em
How can individuals contribute to waste management ? Write about any
s
g la
two steps that can be taken in this regard. 2

8.
a
Your friend is under stress. What will be his expected response on
physical and emotional level ? 2

9. (a) What tips should you use to keep yourself safe when you are doing
rock climbing ? Enlist any four. 4 (14)
OR
(b) Enlist any four useful tips for trekking.

m
m
10. Words of command play an important role in executing drill movements. .co
.co e m
As drill instructor enlist all words of command that are necessary for the
s
s em individual and squad drill.
g l a 4

g la 11. What role is played by ‘Values’ in shaping the personalityaof an individual ? 4
a
12. You are the Deputy Commissioner of a district. Explain the district level
organizations pertaining to civil defence which exist in your district. 4
~56~ { } 7  P.T.O.

m .
.co s e m
s em l a
g la ag
a For more Question Papers, Sample Papers, Notes & Syllabus visit Page 7 of 24

Page 9

 – 
13.     
          
 ,               
     15 , 1947     ,      
 ,               ‘’ 
      ,    ,      , 
              -     
  30 , 1948   ,     -     
       ,        
(a) 30 , 1948       ? 1
(b)        ? 1

14.             6
                
                  
       -, ,        
 ,          ,    
             -,  
                
     ,          
               
                    
    60        
(a)         ? 1
(b)             ? 1
(c)            ? 1
(d)               ? 1
(e)                2

~56~ { } 8 

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Page 10

m
m .co

m .co s e m
se g l a
SECTION – C
a
13. Read the paragraph and answer the questions given below :
Quit India was Gandhi’s and the Congress Party’s most definitive revolt
aimed at securing the British exit from India. When the moment of
freedom came, on 15 August 1947, Gandhi was nowhere to be seen in the
capital, though Nehru and the entire Constituent Assembly were to salute
him as the architect of India’s independence, and as the ‘Father of the m
m
Nation’. Gandhi, quite characteristically, refused additional security, and .co
.co
no one could defy his wish to be allowed to move around unhindered. In
m s e m
e
the early evening hours of 30 January 1948, Gandhi met with India’s
s l a
l a
Deputy Prime Minister and his close associate in the freedom struggle,
g ag
a
Vallabhbhai Patel and then proceeded for his prayers.
(a) Whom did Gandhi meet on 30th January 1948 ? 1
(b) What was the aim of Quit India Movement ? 1

14. Read the paragraph and answer the questions given below : 6
Physical exercise for students is a must to help them grow and keep fit.
Most of the students often complain about the lack of time and hence skip
m
.co
physical activities. A student has a busy day. Commuting to school,
studies, tuitions and homework take their most of the time, but the
e m
s
physical activities are equally important. Activities like running, cycling
la
ag
and sports improve their stamina and body reflexes. Exercises like push-
ups, jumping and skipping help strengthen bones and muscles. Key
benefits of physical exercises include improved cardiovascular health,
stronger muscles and bones and better mental health through the release
of hormone named endorphin. Physical activities help in better academic
performance. These activities also inculcate team work and leadership
qualities. All students should aim for a minimum 60 minutes of daily
physical activity.
m
.co
(a) Why most of the students skip physical activities ?. 1

. c om
(b) Which hormone helps in achieving better mental health ?
e m 1

e m (c) Which daily activities take away most of the time of the students ?
l as 1

las (d) What is the minimum duration for which all students must exercise
ag
ag daily ? 1
(e) Name the activities which improve stamina and body reflexes. 2

~56~ { } 9  P.T.O.

m .
.co s e m
s em l a
g la ag
a For more Question Papers, Sample Papers, Notes & Syllabus visit Page 9 of 24

Page 11

 – II 21
( )
( )
 – 
15.    :
(i)         ? 1

(A) 8 (B) 6
(C) 4 (D) 2
(ii)      -       ? 1

(A) 60  (B) 15 

(C) 55  (D) 45 

(iii)              ? 1

(A) (B)
(C) (D)
(iv)         (Battle craft)     ? 1

(A)  
  (B)    
(C)    (D)  
(v)  (A) : -          
    1

 (R) :    
           
        
(A) (A)  (R)     (R), (A)     

(B) (A)  (R)   ,  (R), (A)      

(C) (A)  ,  (R)   

(D) (A)  ,  (R)   

~56~ { } 10 

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Page 12

m
m .co

m .co s e m
se g l a
PART – II
a 21
(Special Subject)
(Army Wing)
SECTION – D

15. Choose the correct answer :
m
(i)
c o m
How many companies are there in an Infantry Battalion ?
m
1 .co
(A) 8 . (B) 6 s e
e m l a
as
(C) 4
l (D) 2
a g
(ii)agWhich of the following is the correct degree for the North East
direction ? 1
(A) 60 Degrees (B) 15 Degrees
(C) 55 Degrees (D) 45 Degrees
(iii) Which of the following is the conventional sign for International
Boundary ? 1
(A) om
c. (B)
(C)
s em (D)
g la is not a part of the battle craft ?
(iv) Which of the following subject 1
(A) Section formationsa (B) Judging distance
(C) Fire and move (D) Field signals

(v) Assertion (A) : Sometimes, troops overestimate the distances due to
weather conditions.
Reason (R) : Bad visibility or sun light falling in the observer’s eyes
often lead to overestimation of distance.
o m 1
m c
. of (A).
.co
(A) Both (A) and (R) are true and (R) is the correct explanation
m
eexplanation
e m as
(B) Both (A) and (R) are true, but (R) is not the correct
l
las of (A).
ag
ag (C) (A) is true, but (R) is false.
(D) (A) is false, but (R) is true.

~56~ { } 11  P.T.O.

m .
.co s e m
s em l a
g la ag
a For more Question Papers, Sample Papers, Notes & Syllabus visit Page 11 of 24

Page 13

 – 
16. (a)        ?         ? 2 (1+1)

(b)            ?      
   ?

17.       ?        2 (½  4)

18.  --              250    
      2

19. (a)   : 2 (1+1)
(i)  (ii) 

(b) (i)   (ii)  (-)

20. (a)                  
 ? 4 (2+2)

(b)        ?     

 – 
21.             4
       ()        
              26 , 1950  
              21      
  1947-48  -    ; 1962  -   ; 1965 
; 1971  1999    -   ,      1961
                   1987 
        1987       
    
(a)       ? 1
(b)       ? 1
(c)        ? 1
(d)          ? 1

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Page 14

m
m .co

m .co s e m
se g l a
SECTION – E
a
16. (a) Who commands a Division ? How many Brigades are under a Division ?
2 (1+1)
OR
(b) What is the rank of the officer commanding a Corps ? How many
divisions are under the command of a Corps ?

m
.co
17. What are various forms of communication ? Enlist any four. 2 (½  4)
o m m
. c
18. You are on a point-to-point march. You take the bearing of a hill which is s e
s em the back bearing of the hill.
250º. Calculate
g l2a
l a a
19. (a) agDefine : 2 (1+1)
(i) Ridge (ii) Basin
OR
(b) Define :
(i) Dead ground (ii) Spur

20. (a) Cover is important for the camouflage and fighting the enemy. How
would you use the cover correctly ?
m 4 (2+2)
OR
.co
(b)
em
What should an ideal fire position provide ? Enlist any four points.
s
g la – F
SECTION
a
21. Read the paragraph and answer the questions given below : 4
India’s highest gallantry award is Param Vir Chakra (PVC). It is like the
Victoria Cross of the United Kingdom and the Medal of Honour of the
United States of America. The PVC was instituted on 26 January 1950.
Major Somnath Sharma was the first recipient of the PVC. So far, 21
PVCs have been awarded. Five during India-Pakistan War 1947-48; three
in India-China War 1962; two in 1965; four each in 1971 and 1999 wars.
Apart from this, Captain Gurbachan Singh Salaria won it as a United
m
m Nations Peacekeeper in Congo in 1961. Naib Subedar Bana Singh won a
.co
m .co PVC on the Siachen Glacier in 1987 and Major Ramaswamy
Parmeshwaran during the Operation Pawan in Sri Lanka in 1987. s e m
s e (a) What is the American equivalent of the PVC ? g l a 1
g la (b) Who was the first recipient of the PVC ? a 1
a (c) Who has won the PVC on the Siachen Glacier ? 1
(d) So far, how many PVCs have been awarded ? 1

~56~ { } 13  P.T.O.

m .
.co s e m
s em l a
g la ag
a For more Question Papers, Sample Papers, Notes & Syllabus visit Page 13 of 24

Page 15

 – II 21
( )
( )
 – 

15.    : 51=5
(i)        ()    ? 1
(A)   (B)  
(C)    (D)  
(ii)                ? 1
(A) 22 – 27  (B) 22 – 26 
(C) 22 – 25  (D) 22 – 24 

(iii)                    1
(A)  (B)   
(C)    (D)   
(iv)                ,
   1
(A)   (B)  
(C)   (D)  
(v)  (A) :     5-7          1
 (R) :               
(A) (A)  (R)     (R), (A)     
(B) (A)  (R)     (R), (A)      
(C) (A)  ,  (R)   
(D) (A)  ,  (R)   

~56~ { } 14 

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Page 16

m
m .co

m .co s e m
se g l a
PART – II
a 21
(Special Subject)
(Navy Wing)
SECTION – D
15. Choose the correct option : 51=5
(i) Which of the following prosigns stand for ‘slant’ ? 1
m
(A) DU
m (B) XE
.co
(C) MIM .co (D) AS e m
(ii) Whats eismthe age limit for Permanent Commission in Navy in Direct glas
g la Law Cadre ?
Entry a 1
a (A) 22-27 years (B) 22-26 years
(C) 22-25 years (D) 22-24 years

(iii) This is a warning to the crew to keep the blades of their oar clear
from obstructions. 1
(A) Bow (B) Boat your oars
(C) Mind your oars
o m (D) Back together

(iv) A ship model that is designed m
. c
to project the actual working of the
s e
boat is called –
g la 1
(A) Solid model a (B) Sailing model
(C) Actual model (D) Working model
(v) Assertion (A) : Large scale charts cover an area of 5-7 nautical
miles.
Reason (R) : Large scale charts are generally of harbours and their
approaches. 1
m
.co
(A) Both (A) and (R) are true and (R) is the correct explanation of (A).
m
m .co (B) Both (A) and (R) are true, but (R) is not the correct explanation
s e m
s e of (A).
g l a
g la (C) (A) is true, but (R) is false. a
a
(D) (A) is false, but (R) is true.

~56~ { } 15  P.T.O.

m .
.co s e m
s em l a
g la ag
a For more Question Papers, Sample Papers, Notes & Syllabus visit Page 15 of 24

Page 17

 – 
16.       ?                2(1+1)

17. (a)    ?          ? 2(1+1)

(b)   ‘ ’      ?     
    ? 2(1+½+½ )

18.    ?        ? 2

19.    -               
                 
           2

20. (a)               
  4

(b)                   
               
  
     ?
 – 
21.             4
26 , 2025               
                
     -           
   
     ,  17 ()        
 , ,      
         ,     , 
          ,      
        (WDB)     , 
  ,  WDB     100       
          
(a)    INS        ? 1
(b) INS        ? 1
(c)           100     ? 1
(d)        ? 1

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Page 18

m
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SECTION – E
a
16. What is the full form of RADAR ? Write about any one type of RADAR
used in Navy. 2(1+1)
17. (a) What is Semaphore ? What is the numeral sign used for ? 2(1+1)
OR
(b) Why Cadets should be trained in Semaphore skills ? What does 1st
m
.co
circle and 2nd circle stand for ? 2(1+½+½ )
m
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18. What is a Block ? What is it made of ?
e m 2

s
19. Your friendemhas just completed graduation. He wants to became an glas
l
aviation
g a pilot in the Indian Navy through Short Service Commission.a
a
Inform your friend about the eligibility criteria regarding the educational
qualification and age criteria for becoming an aviation pilot with navy. 2

20. (a) Enlist the criterion for evaluation of ship models from static and
stability point of view. 4
OR
(b) You are a team leader. Your team is preparing a ship model. What
points would you brief your team regarding the care and
maintenance of power tools used in modelling ?
o m
c
.–F
SECTION m
equestions given below :
21. Read the paragraph and answer the s
laday for the Indian Navy when two stealth
4
g
26 August 2025 was a red-letter
a Himgiri were commissioned at the Naval
frigates INS Udaygiri and INS
Base, Visakhapatnam. It was the first occasion when two frontline
warships, constructed at two different Indian shipyards, were
commissioned on the same day.
INS Udaygiri and Himgiri are warships of the Project 17 (Shivalik) class
frigates and have improved design, stealth, weapon and sensors systems.
INS Udaygiri has been built by Mazagon Dock Shipbuilders Ltd.,
Mumbai, and INS Himgiri was constructed in Garden Reach Shipbuilders
m
.co
& Engineers, Kolkata.
m
.co
Both frigates were designed by the Indian Navy’s Warship Design Bureau
(WDB), and notably Udaygiri is the 100th ship designed by the WDB. INS e m
e m Udaygiri and Himgiri will join the Eastern Fleet of the Indian Navy.
l as
las (a) Which bureau has designed the INS Udaygiri and Himgiri ? ag 1
ag (b) Where was INS Himgiri constructed ? 1
(c) Which is the 100th ship designed by Indian Navy’s Warship Design Bureau ? 1
(d) Which project both the warship belong to ? 1

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Page 19

 – II 21
( )
( )
 – 
15.    : 51=5
(i)                   ? 1
(A)  29 (B)  21 
(C)  30    (D)  2000

(ii)   _____    1
(A)  (B) 
(C)  (D) 

(iii)          ? 1
(A) 85    (B) 50 
(C) 70  (D) 11-16 

(iv)    (A)   (R)            
   : 1
 (A) :      ,       
 (R) :             
         
(A) (A)  (R)     (R), (A)     
(B) (A)  (R)   ,  (R), (A)      
(C) (A)  ,  (R)   
(D) (A)  ,  (R)   

(v)            ? 1
(A)  30    (B)   - 76
(C)  (D)  29

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m
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PART – II
a 21
(Special Subject)
(Air Wing)
SECTION – D
15. Choose the correct option : 51=5
(i) Which of the following fighter aircraft has been retired from the m
m
Indian Air Force recently ? 1 .co
.co
(A) MiG 29 (B) MiG 21 BISON
s e m
s em
(C) Su30 MKI (D) Mirage 2000 l a
la
(ii)agAVRO is a _________ aircraft.
ag 1
(A) Helicopter (B) Fighter
(C) Training (D) Transport

(iii) What is the height of the Thermosphere from the surface of the earth ? 1
(A) Above 85 km (B) 50 km
(C) 70 km (D) 11-16 km
m
m .co
(iv) There are two statements marked as Assertion (A) and Reason (R).
Choose the correct answer from the options given below : 1
s e
Assertion (A) : There isa a large quantity of nitrogen in the
l
ag the oxygen.
atmosphere more than
Reason (R) : Nitrogen is a very stable and unreactive gas. It is too
heavy to escape the Earth’s gravity.
(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).
m
m (C) (A) is true, but (R) is false.
.co
m .co (D) (A) is false, but (R) is true. s e m
s e g a
l ?
g la a
(v) Which of the following aircraft is not of Russian origin 1
a (A) Su30 MKI (B) IL-76
(C) Jaguar (D) MiG 29

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Page 21

 – 
16.   : 2(1+1)
(a)  
(b) 

17.              2

18. (a)  ‘ ’  , 27 , 1999       
                ? 2(½  4)

(b)  ‘ ’           
         

19. (a)     : 2(1+1)
(i)    
(ii)  (   - 16)

(b)        
(i)  29
(ii) 

20. (a) 03 , 1971            
       ?    4

(b)  ‘ ’             
                
    

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Page 22

m
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SECTION – E
a
16. Define : 2(1+1)
(a) Topographical map
(b) Hanchures

m
.co
17. Enlist the types of gliders that are made during aeromodelling. 2
m
.co e m
s
18. (a) During emthe Operation Safed Sagar which two jets were shot down glas
g la Batalik Sector by Pakistan Army on 27 May, 1999 and whicha
over
a aircraft was lost the following day ? 2(½  4)
OR
(b) Give a list of the Helicopters and Transport aircrafts used during the
operation Safed Sagar. Mention two names each.

19. (a) Write the role of the following : m 2(1+1)
(i) HAL Dhruv c. o
e m
(ii) KIRAN (HJT-16)
las
OR ag
(b) Mention any one feature each of
(i) MiG-29
(ii) Jaguar

20. (a) How did the Pakistan Air Force and ground troops launch an Israel
m
m type preemptive strike on 03 December 1971 on the Western front ? .co
m .co Discuss.
s em 4

s e OR
g la
g la a
(b) Which strategy and technology did the Indian Air Force adopt during
a Operation Safed Sagar to stay out of the Pakistan’s shoulder-fired
surface-to-air missiles ? Discuss.
~56~ { } 21  P.T.O.

m .
.co s e m
s em l a
g la ag
a For more Question Papers, Sample Papers, Notes & Syllabus visit Page 21 of 24

Page 23

 – 
21.               4

       ,           
    85    ,       
( –90 C)         ,     ,
              
                 
                   
         ,     ( 
)      ,    :
(i)     15 
(ii)     1013.25 mb
(iii)   1225 g/m3
(iv)     980.665 cm/sec2
(v) 11  6.5  / (1.98  /1000 )  
        
(a)           ? 1

(b)         ? 1

(c)                2

_____________

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m
m .co

m .co s e m
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a
SECTION – F
21. Read the given passage and answer the questions given below : 4
The layer above the stratosphere is the mesosphere, where the
temperature again decreases with height. The boundary of the
mesosphere is the mesopause, about 85 km high, where the lowest
temperatures in the atmosphere is found (about –90 ºC). m
o m
A standard average atmosphere has to be specified for various purposes
c m .co
like the design. and testing of aircraft, evaluation of aircraft performance, s e
e m l a
s
calibration of pressure altimeter etc. For this purpose a standard g
la is defined and used as a basis of references. The most widelya
a g
atmosphere
used atmosphere for reference purposes is the one defined by ICAO,
known as International Standard Atmosphere (ISA), whose specifications
are :
(i) Mean Sea level temperature 15 C.
(ii) Mean Sea level pressure 1013.25 mb.
(iii) Surface density 1225 g/m3.
o m
(iv) Acceleration due to gravitym
. c
980.665 cm/sec . 2

s e up to 11 km 6.5 C/km (1.98 C /
g la
(v) Rate of fall of temp with height
1000 ft.) a
(a) Where the lowest temperature in the atmosphere is found ? 1
(b) What is the full form of ISA ? 1
(c) Write any two purposes of specifying a standard average
atmosphere. 2
_____________
m
m .co
m .co s e m
s e g l a
g la a
a

~56~ { } 23  P.T.O.

m .
.co s e m
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a For more Question Papers, Sample Papers, Notes & Syllabus visit Page 23 of 24

Page 25

~56~ { } 1168 24 

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Document Details

Board / OrgCBSE
ExamClass 10
TypeQuestion Paper
Pages25
Languageenglish
Updated24 Sep 2026