This Question Paper consists of 30 questions and 11 printed pages.
§â ÂýàÙ-˜æ ×ð´ 30 ÂýàÙ ÌÍæ 11 ×éçÎýÌ ÂëcÆU ãñ´Ð
Roll No.
Code No.
¥Ùé·ý¤×æ´·¤
·¤æðÇU Ù´.
49/HIS/1
SCIENCE AND TECHNOLOGY
Set
(çߙææÙ °ß´ Âýæñlæðç»·¤è)
A
(212)
Day and Date of Examination
ÂÚUèÿææ ·¤æ çÎÙ ß çÎÙæ´·¤
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1.
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2.
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2.
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Also check to see that the questions are in sequential order.
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Write your Question Paper code No.
7.
(a)
(b)
49/HIS/1-A on the Answer-Book.
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answer in any one of the languages listed below :
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49/HIS/1-212-A ]
1
!49/HIS/1-212-A!
[ Contd...
âæ×æ‹Ø ¥ÙéÎðàæ Ñ
1.
ÂÚUèÿææÍèü ÂýàÙÂ˜æ ·ð¤ ¤ÂãÜð ÂëcÆU ÂÚU ¥ÂÙæ ¥Ùé·ý¤×æ´·¤ ¥ßàØU çܹð´Ð
2.
·ë¤ÂØæ ÂýàÙÂ˜æ ·¤æð Áæò¡¿ Üð´ ç·¤ ÂýàÙÂ˜æ ·ð¤ ·é¤Ü ÂëcÆUæð´ ÌÍæ ÂýàÙæð´ ·¤è ©ÌÙè ãè ⴁUØæ ãñ çÁÌÙè ÂýÍ× ÂëcÆ ·ð ¤âÕâð
ª¤ÂÚU ÀUÂè ãñÐ §â ÕæÌ ·¤è Áæò¡¿ Öè ·¤ÚU Üð´ ç·¤ ÂýàÙ ·ý ç×·¤ UM¤Â ×ð´ ãñ´Ð
3.
ßSÌéçÙcÆU ÂýàÙæð´ ×𴠥淤æð ¿æÚU çß·¤ËÂæð´
©žæÚU-ÂéçSUÌ·¤æ ×ð´ ¥æ âãè ©žæÚ çÜç¹°ÐU
4.
ßSÌéçÙcÆU ÂýàÙæð´ ·ð¤ âæÍ-âæÍ âÖè ÂýàÙæ𴠷𤠩žæÚ çÙÏæüçÚUÌ ¥ßçÏ ·ð ÖèÌÚU ãè ÎðÙð ãñ´Ð ßSÌéçÙcÆU ÂýàÙæð´ ·ð¤ çÜ°¤¥Ü»
âð â×Ø Ùãè´ çÎØæ Áæ°»æÐ
5.
¤ ©žæÚU-ÂéçSUÌ·¤æ ×ð´ Âã¿æÙ-ç¿q ÕÙæÙð ¥Íßæ çÙçÎücÅU SÍæÙæ𴠷𤤠¥çÌçÚU€Ì ·¤ãè´ Öè ¥Ùé·ý¤×æ´·¤ çܹÙð ÂÚU ÂÚUèÿææÍèü
·¤æð ¥Øæð‚Ø ÆUãÚUæØæ ÁæØð»æÐ
(A), (B), (C)
ÌÍæ
(D)
×ð´ âð ·¤æð§ü °·¤ ©žæÚ ¿éÙÙæ ãñ ÌÍæ Îè »§ü
6.
¥ÂÙè ©žæÚU-ÂéçSUÌ·¤æ ÂÚU ÂýàÙÂ˜æ ·¤è ·¤æðÇU ⴁØæ 49/HIS/1-A çܹð´Ð
7.
(·¤) ÂýàÙÂ˜æ ·ð¤ßÜ çã´Îè/¥´»ýðÁè ×ð´ ãñÐ çȤÚU Öè, ØçÎ ¥æ ¿æãð´ Ìæð Ùè¿ð Îè »§ü ç·¤âè °·¤ Öæáæ ×ð´ ©žæÚ Îð â·¤Ìð
ãñ´ Ñ
¥´»ýðÁè, çã´Îè, ©Îêü, ´ÁæÕè, Õ¡»Üæ, Ìç×Ü, ×ÜØæÜ×, ·¤‹ÙǸ, ÌðÜé»é, ×ÚUæÆUè, ©çǸØæ, »éÁÚUæÌè, ·¤æð´·¤‡æè,
×ç‡æÂéÚUè, ¥âç×Øæ, ÙðÂæÜè, ·¤à×èÚUè, â´S·ë¤Ì¤¥æñÚU çâ´ÏèÐ
·ë¤ÂØæ ©žæÚU-ÂéçSÌ·¤æ ×ð´ çΰ »° Õæò€â ×ð´ çܹð´ ç·¤ ¥æ 緤â Öæáæ ×ð´ ©žæÚU çܹ ÚUãð ãñ´Ð ¤
(¹) ØçÎ ¥æ çã´Îè °ß´ ¥´»ýðÁè ·ð¤ ¥çÌçÚU€Ì ç·¤âè ¥‹Ø Öæáæ ×ð´ ©žæÚU çܹÌð ãñ´ Ìæð ÂýàÙ ·¤æð â×ÛæÙð ×ð´ ãæðÙð ßæÜè
˜æéçÅUØæð´/»ÜçÌØæð´ ·¤è çÁ×ðUÎæÚè ·ð ßÜ ¥æ·¤è ãæð»èÐ
49/HIS/1-212-A ]
2
!49/HIS/1-212-A!
[ Contd...
SCIENCE AND TECHNOLOGY
(çߙææÙ °ß´ Âýæñlæðç»·¤è)
(212)
Time : 2 21 Hours ]
â×Ø Ñ
2 21
[ Maximum Marks : 85
ƒæ‡ÅðU ]
[ Âê‡ææZ·¤ Ñ 85
Note :
(1)
(2)
All questions are compulsory.
Marks are indicated against each question.
çÙÎðüàæ Ñ
(1)
âÖè ÂýàÙ ¥çÙßæØü ãñ´Ð
ÂýˆØð·¤ ÂýàÙ ·ð¤ ¥´·¤ ©â·ð¤ âæ×Ùð çΰ »Øð ãñ´Ð
(2)
1.
An element ‘X’ reacts with oxygen to form oxide. This oxide dissolves in water to form
a solution which turns blue litmus red. This oxide also reacts with NaOH to form salt.
The element ‘X’ is :
(A)
Carbon
(B)
Sodium
(C)
Calcium
(D)
Magnesium
1
°·¤ Ìˆß ‘X’ ¥æò€âèÁÙ ·ð¤ âæÍ ç·ý¤Øæ ·¤ÚU·ð¤ °·¤ ¥æò€âæ§ÇU ÕÙæÌæ ãñÐ Øã ¥æò€âæ§ÇU ÂæÙè ×𴠃æéÜ·¤ÚU
çßÜØÙ ÕÙæÌæ ãñ Áæð ÙèÜð çÜÅU×â ·¤æð ÜæÜ ·¤ÚU ÎðÌæ ãñÐ ßã ¥æò€âæ§ÇU NaOH ·ð¤ âæÍ ç·ý¤Øæ ·¤ÚU·ð¤ Ü߇æ
ÕÙæÌæ ãñÐ Ìˆß ‘X’ ãñ Ñ
2.
(A)
·¤æÕüÙ
(B)
âæðçÇUØ×
(C)
·ñ¤çËàæØ×
(D)
×ñ‚ÙèçàæØ×
Which of the following is not the characteristic of ‘Xerophytes’ ?
(A)
Succulent leaves and stems
(B)
Few or no leaves
(C)
Large number of stomata
(D)
Deep wide spread root system
1
çِÙçÜç¹Ì ×ð´ âð ·¤æñÙ Ò×M¤Î÷çÖÎÓ ·¤æ ¥çÖÜÿæ‡æ Ùãè´ ãñ?
(A)
×æ¡âÜ ÌÙð ß ÂçžæØæ¡
(B)
ÂçžæØæ¡ Øæ Ìæð ·¤× ãæðÌè ãñ´ Øæ Ùãè´ ãæðÌè ãñ´
(C)
ÕǸè ⴁØæ ×ð´ SÅUæð×ðÅUæ ãæðÌð ãñ´
(D)
çß·¤çâÌ ×êÜ-Ì´˜æ
49/HIS/1-212-A ]
3
!49/HIS/1-212-A!
[ Contd...
3.
The clouds formed in the sky are an example of :
(A)
Emulsion
(B)
1
Suspension
(C)
Foam
(D)
Aerosol
çÙܐÕÙ ·¤æ
(C)
Ûææ» ·¤æ
(D)
°ØÚUæðâæðÜ ·¤æ
¥æ·¤æàæ ×ð´ ÕÙð ÕæÎÜ ©ÎæãÚU‡æ ãñ´ Ñ
(A)
4.
ÂæØâ ·¤æ
(B)
When the fingers of a person accidently touch a hot metal object, he withdraws fingers
instantaneously. This involuntary action of the person is controlled by :
(A)
Cerebrum
(B)
Cerebellum
(C)
Medulla oblongata
(D)
Spinal cord
1
ÁÕ ç·¤âè ÃØç€Ì ·¤è ©´»çÜØæ¡ ÎéƒæüÅUÙæßàæ °·¤ »×ü ÏæÌé ·¤è ßSÌé ·¤æð ÀêU Áæ°¡ ÌÕ ßã ÃØç€Ì ©´»çÜØæ¡ Ìˆ·¤æÜ
ßæÂ⠹贿 ÜðÌæ ãñÐ ÃØç€Ì ·¤è Øã ¥Ùñç‘ÀU·¤ ç·ý¤Øæ çِÙçÜç¹Ì ×ð´ âð ç·¤â·ð¤ mæÚUæ çÙØ´ç˜æÌ ãæðÌè ãñ?
5.
(A)
Âý×çSÌc·¤
(B)
¥Ùé×çSÌc·¤
(C)
×ðÇéUÜæ ¥æòŽÜæ´»ñÅUæ
(D)
×ðM¤-ÚU’Áé
What will happen if two electric bulbs of 25 W and 100 W both rated at 220 V are
connected to the main 220 V supply in series ?
(A)
Electric bulb of 100 W will only glow
(B)
Both electric bulbs will glow with equal brightness
(C)
Electric bulb of 100 W will glow brighter than electric bulb of 25 W
(D)
Electric bulb of 25 W will glow brighter than electric bulb of 100 W
1
220 V ·ð¤
çÜ° ¥Ùé×Ì °ß´ oýð‡æè ·ý¤× ×ð´ ÁéǸð 25 W ¥æñÚU 100 W ·ð¤ Îæð çßléÌ ÕËÕæð´ ·¤æð 220 V ·ð¤ ×éØ dæðÌ
âð ÁæðǸÙð ÂÚU €Øæ ãæð»æ?
(A)
·ð¤ßÜ 100 W ·¤æ çßléÌ ÕËÕ Âý·¤æçàæÌ ãæð»æ
(B)
ÎæðÙæð´ çßléÌ ÕËÕ â×æÙ ¿×·¤ âð Âý·¤æçàæÌ ãæð´»ð
(C)
25 W ·ð¤
(D)
100 W ·ð¤
49/HIS/1-212-A ]
çßléÌ ÕËÕ ·¤è ¥Âðÿææ
100 W ·¤æ
çßléÌ ÕËÕ ·¤è ¥Âðÿææ
25 W ·¤æ
4
çßléÌ ÕËÕ ¥çÏ·¤ ¿×·¤ âð Âý·¤æçàæÌ ãæð»æ
çßléÌ ÕËÕ ¥çÏ·¤ ¿×·¤ âð Âý·¤æçàæÌ ãæð»æ
!49/HIS/1-212-A!
[ Contd...
6.
Which of the following communicable diseases is caused by virus ?
(A)
Amoebiasis
(B)
Dengue fever
(C)
Malaria
(D)
Tuberculosis
1
çِÙçÜç¹Ì ×ð´ âð ·¤æñÙ âæ â´·ý¤æ×·¤ ÚUæð» ßæØÚUâ mæÚUæ ãæðÌæ ãñ?
7.
(A)
¥×èÕæØçââ
(B)
Çð´U‚Øê ’ßÚU
(C)
×ÜðçÚUØæ
(D)
ÌÂðçη¤
In water purifiers, which of the following form of carbon is used for adsorbing coloured
impurities and foul odours from water ?
(A)
Graphite
(B)
Coke
(C)
Activated charcoal
(D)
Carbon black
1
ÂæÙè àæéh ·¤ÚUÙð ßæÜð ؋˜æ ×ð´ ÂæÙè âð Ú´U»èÙ ç×ÜæßÅU ¥æñÚU ÕéÚUè »´Ï ¥çÏàææðá‡æ ·ð¤ çÜ° çِÙçÜç¹Ì ×ð´ âð
·¤æÕüÙ ·¤æ ·¤æñÙ âæ M¤Â ©ÂØæð» ×ð´ ÜæØæ ÁæÌæ ãñ?
8.
(A)
»ýðȤæ§ÅU
(B)
·¤æð·¤
(C)
âç·ý¤çØÌ ¿æÚU·¤æðÜ (Ü·¤Ç¸è ·¤æ ·¤æðØÜæ)
(D)
·¤æÕüÙ ŽÜñ·¤
Which of the following processes is not an exothermic reaction ?
(A)
The process of digestion of food by human beings
(B)
The rusting of iron nails
(C)
The decomposition of vegetable matter into compost
(D)
Burning of natural gas
1
çِÙçÜç¹Ì ×ð´ âð ·¤æñÙ âè Âýç·ý¤Øæ ª¤c×æÿæðÂè ¥çÖç·ý¤Øæ Ùãè´ ãñ?
(A)
×æÙß ×ð´ ÖæðÁ٠¿æÙð ·¤è Âýç·ý¤Øæ
(B)
Üæðãð ·¤è ·¤èÜæð´ ×ð´ Á´» Ü»Ùæ
(C)
ßæÙSÂçÌ·¤ ÂÎæÍü ·¤æ ¥ÂƒæÅUÙ ãæðÙð ÂÚU ¹æÎ ÕÙæÙæ
(D)
Âýæ·ë¤çÌ·¤ »ñâ ·¤æ ÁÜÙæ
49/HIS/1-212-A ]
5
!49/HIS/1-212-A!
[ Contd...
9.
Two spring balances A and B are being pulled apart as shown in the figure given
below :
1
The reading in balance B is 4 N. The reading in balance A will be :
(A)
zero
(B)
2N
(C)
4N
(D)
8N
Îæð ·¤×æÙèÎæÚU ÌéÜæ°¡ A ÌÍæ B ·¤æð °·¤ ÎêâÚðU ·ð¤ çßÂÚUèÌ ¹è´¿æ ÁæÌæ ãñ Áñâæ ç·¤ Ùè¿ð çΰ »° 翘æ ×ð´ çιæØæ
»Øæ ãñÐ
·¤×æÙèÎæÚU ÌéÜæ B ·¤æ ÂæÆ÷Øæ´·¤ 4 N ãñÐ ·¤×æÙèÎæÚU ÌéÜæ A ·¤æ ÂæÆKæ´·¤ ãæð»æ Ñ
(A) àæê‹Ø
(B) 2 N
(C) 4 N
10.
(D)
8N
A chemical factory discharges its waste that is rich in nitrates into a water body. How
does it affect the population of fishes in the water bodies ? Explain.
2
°·¤ ÚUæâæØçÙ·¤ ·¤æÚU¹æÙæ Ùæ§ÅþðUÅU Øé€Ì ¥ÂçàæcÅU ÂÎæÍæðZ ·¤æð ÁÜ ·é´¤ÇU ×ð´ ÂýßæçãÌ ·¤ÚU ÎðÌæ ãñÐ Øã ÁÜ ·é´¤ÇU ×ð´
×ÀUçÜØæð´ ·¤è ¥æÕæÎè ÂÚU €Øæ ÂýÖæß ÇUæÜð»æ? ÃØæØæ ·¤èçÁ°Ð
11.
Why is it wrong to blame a mother only for giving birth to a female child ? Explain
with the help of chromosomal basis of sex determination.
2
·ð¤ßÜ ×æÎæ â´ÌæÙ ©ˆÂ‹Ù ·¤ÚUÙð ·ð¤ çÜ° ×æ¡ ·¤æð ãè Îæðá ÎðÙæ €Øæð´ »ÜÌ ãñ? çÜ´» çÙÏæüÚU‡æ ·ð¤ »é‡æ âê˜æè ¥æÏæÚU
·¤è âãæØÌæ âð â×Ûæ槰Ð
12.
State law of constant proportion. In magnesium oxide, magnesium and oxygen are
present in the ratio of 3 : 2 by mass. In a chemical reaction 6 g magnesium powder was
ignited in a container having 12 g of pure oxygen. After the completion of the chemical
reaction, it was found that 8 g of oxygen was left unreacted. Show that these
observations are in accordance with the law of constant proportions.
2
çSÍÚU ¥ÙéÂæÌ ·¤æ çÙØ× ÕÌæ§ØðÐ ×ñ‚ÙèçàæØ× ¥æò€âæ§ÇU ×ð´ ×ñ‚ÙèçàæØ× ¥æñÚU ¥æò€âèÁÙ ÎýÃØ×æÙæÙéâæÚU
3 : 2 ¥ÙéÂæÌ ×ð´ ãæðÌð ãñ´Ð ç·¤âè ÚUæâæØçÙ·¤ ¥çÖç·ý¤Øæ ×ð´ 6 g ×ñ‚ÙèçàæØ× ·¤æð °·¤ ÕÌüÙ, çÁâ×ð´ 12 g àæéh
¥æò€âèÁÙ ãñ, ÁÜæØæ »ØæÐ ¥çÖç·ý¤Øæ â×æŒÌ ãæðÙð ·ð¤ Âà¿æÌ 8 g ¥æò€âèÁÙ ¥ÙçÖ·ë¤Ì ÂæØè »§üÐ Îàææü§°
ç·¤ Øð Âðýÿæ‡æ çSÍÚU ¥ÙéÂæÌ ·ð¤ çÙØ× ·ð¤ ¥ÙéâæÚU ãñ´Ð
49/HIS/1-212-A ]
6
!49/HIS/1-212-A!
[ Contd...
13.
On what factors does the buoyant force acting on a body immersed in a fluid depend ?
What will happen when the buoyant force acting on a body is equal to its own
weight ?
2
ÌÚUÜ ×æŠØ× ×ð´ ÇéUÕæð° »° ç·¤âè ç‡ÇU ÂÚU Ü»Ùð ßæÜ𠩈ŒÜæßÙ ÕÜ ·¤æ ÂçÚU×æ‡æ ç·¤Ù ·¤æÚU·¤æð´ ÂÚU çÙÖüÚU ·¤ÚUÌæ
ãñ? ØçÎ ç·¤âè ç´ÇU ÂÚU Ü»Ùð ßæÜæ ©ˆŒÜæßÙ ÕÜ ç´ÇU ·ð¤ ÖæÚU ·ð¤ ÕÚUæÕÚU ãæð Ìæð €Øæ ãæð»æ?
14.
Draw symbols of the following devices used in electric circuit diagram :
(i)
Battery
(ii)
A closed plug key
(iii)
Electric fuse and
(iv)
An electric bulb
2
çßléÌ ÂçÚUÂÍ ×ð´ ÂýØé€Ì ãæðÙð ßæÜð çِÙçÜç¹Ì Øéç€ÌØæð´ ·ð¤ çÜ° ÂýÌè·¤ ÕÙ槰 Ñ
15.
(i)
ÕñÅUÚUè
(ii)
Õ´Î ŒÜ» ·é´¤Áè
(iii)
ßñléÌ ØêÁ ÌÍæ
(iv)
çßléÌ ÕËÕ
Name the part of human cell which contains network of chromosomes present as
chromatin. Write one function of this part.
2
×æÙß ·¤æðçàæ·¤æ ·ð¤ ©â Öæ» ·¤æ Ùæ× ÕÌ槰 çÁâ×ð´ ·ý¤æð×ðçÅUÙ ·ð¤ M¤Â ×ð´ ©ÂçSÍÌ ·ý¤æð×æðâæð×â ·¤æ ÙðÅUß·ü¤ ÂæØæ
ÁæÌæ ãñÐ §â Öæ» ·¤æ °·¤ ·¤æØü çÜç¹°Ð
16.
What is the cause of rainbow formation during the rainy season ? Which of the seven
colours seen in rainbow has
(i)
maximum wavelength and (ii)
2
minimum wavelength ?
ßáæü «¤Ìé ×ð´ §‹ÎýÏÙéá ÕÙÙð ·¤æ €Øæ ·¤æÚU‡æ ãñ? §‹ÎýÏÙéá ·ð¤ âæÌ ÚU´»æð´ ×ð´ ç·¤â Ú´U» ·¤æ ÌÚ´U»ÎñŠØü
(i)
17.
¥çÏ·¤Ì× ãæðÌæ ãñ, ÌÍæ
(ii)
‹ØêÙÌ× ãæðÌæ ãñ?
Differentiate between base SI units and derived SI units. Derive the SI unit of weight.
4
×êÜ SI ×æ˜æ·¤æð´ ß ÃØéˆÂ‹Ù SI ×æ˜æ·¤æð´ ×ð´ ¥´ÌÚU ·¤èçÁ°Ð ÖæÚU ·¤æ SI ×æ˜æ·¤ ÃØéˆÂ‹Ù ·¤èçÁ°Ð
49/HIS/1-212-A ]
7
!49/HIS/1-212-A!
[ Contd...
18.
Give reasons for the following :
4
(i)
Treaded tyres are used in a car instead of flat tyres.
(ii)
When we shake a wet piece of cloth after washing, water droplets come out of it.
çِÙçÜç¹Ì ·ð¤ çÜ° ·¤æÚU‡æ ÕÌ槰 Ñ
19.
(i)
ÜñÅU ÅUæØÚUæð´ ·¤è ¥Âðÿææ ·¤æÚUæð´ ×𴠹桿ðÎæÚU ÅUæØÚU ©ÂØæð» ×ð´ Üæ° ÁæÌð ãñ´Ð
(ii)
ÏæðÙð ·ð¤ Âà¿æÌ ÁÕ ã× Öè»ð ·¤ÂǸ𠷤æð ÛæÅU·¤Ìð ãñ´ Ìæð ©â×ð´ âð ÂæÙè ·¤è Õê´Îð´ ÕæãÚU çÙ·¤ÜÌè ãñ´Ð
Draw the chemical structure of Butane and Isobutane. Justify that they are isomers.
4
ŽØêÅðUÙ ¥æñÚU ¥æ§âæðŽØêÅðUÙ ·¤è ÚUæâæØçÙ·¤ â´ÚU¿Ùæ ÕÙ槰РÎàææü§° ç·¤ Øð ÎæðÙæð´ Øæñç»·¤ â×æßØßè ãñ´Ð
20.
List the raw materials required for the manufacture of bleaching powder. Describe the
method to manufacture it with the help of a labelled diagram. Write the chemical
equation for the reaction involved.
4
ŽÜèç¿´» Âæ©ÇUÚU ·ð¤ çÙ×æü‡æ ×ð´ ©ÂØæð» ·¤è ÁæÙð ßæÜè ¥æßàØ·¤ âæ×»ýè (·¤‘¿ð ×æÜ) ·¤è âê¿è ÕÙ槰Ð
Ùæ×æ´ç·¤Ì ç¿˜æ ·¤è âãæØÌæ âð §â·¤è çÙ×æü‡æ çßçÏ ·¤æ ߇æüÙ ·¤èçÁ°Ð §â çßçÏ ×ð´ ãæðÙð ßæÜè ¥çÖç·ý¤Øæ ·¤æ
ÚUæâæØçÙ·¤ â×è·¤ÚU‡æ çÜç¹°Ð
21.
Write Darwin’s two major contributions with regard to evolution. What is the function
of ‘Natural Selection’ ? With which group of animals do humans share their immediate
ancestors ?
4
çß·¤æâ â´Õ´Ïè ÇUæçßüÙ ·ð¤ Îæð Âý×é¹ Øæð»ÎæÙ çÜç¹°Ð ÒÂýæ·ë¤çÌ·¤ ßÚU‡æÓ ·¤æ €Øæ ·¤æØü ãñ? Âàæé¥æð´ ·ð¤ ç·¤â
â×êã ·ð¤ çÙ·¤ÅUÌ× ÂêßüÁ ×ÙécØ ·ð¤ çÙ·¤ÅUÌ× ÂêßüÁæð´ ·ð¤ çÕÚUæÎÚU Íð?
22.
(a)
Can a bimetallic strip made of silver and brass be used as thermostat in heating
and cooling devices ? Give reasons for your answer.
4
(Given a for brass and silver 5 1831026 per degree Celsius)
(b)
All other conditions remaining identical which will cause more severe burns steam
at 1008C or water at 1008C ? Give reasons for your answer.
(a)
»×ü ß ÆU‡ÇUæ ·¤ÚUÙð ßæÜð ©Â·¤ÚU‡ææð´ ×𴠀Øæ ¿æ¡Îè ¥æñÚU ÂèÌÜ ·¤è ÕÙè çmÏæÌé Â^è ·¤æ ©ÂØæð» ÌæÂSÍæ·¤
·ð¤ M¤Â ×ð´ ç·¤Øæ Áæ â·¤Ìæ ãñ? ¥ÂÙ𠩞æÚU ·ð¤ çÜ° ·¤æÚU‡æ ÕÌ槰Ð
(çÎØæ
(b)
ãñ; ÂèÌÜ ¥æñÚU ¿æ¡Îè ·ð¤ çÜ° a ·¤æ ×æÙ 1831026 8C21 ãñ)
¥‹Ø âÖè Îàææ°¡ â×æÙ ãæð Ìæð 1008 C ·ð¤ ßæc ÌÍæ 1008C ·ð¤ ÁÜ âð ÁÜÙð ÂÚU ·¤æñÙ ¥çÏ·¤ »´ÖèÚU
ƒææß ÎðÌæ ãñ? ¥ÂÙ𠩞æÚU ·ð¤ çÜ° ·¤æÚU‡æ ÕÌ槰Ð
49/HIS/1-212-A ]
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23.
What is meant by ozone hole ? Explain the causes for its formation over Antarctic
regions. Why is the formation of ozone hole a cause of worry for human beings ? Give
two important reasons in support of your answer.
4
¥æð$ÁæðÙ çÀUÎý âð €Øæ ¥çÖÂýæØ ãñ? ¥´ÅUæç€ÅüU·¤ ÿæð˜æ ×ð´ ¥æð$ÁæðÙ çÀUÎý ÕÙÙð ·ð¤ ·¤æÚU‡ææð´ ·¤è ÃØæØæ ·¤èçÁ°Ð ×æÙßæð´
·ð¤ çÜ° ¥æð$ÁæðÙ çÀUÎý ·¤æ ÕÙÙæ €Øæð´ ç¿´Ìæ ·¤æ çßáØ ãñ? ¥ÂÙ𠩞æÚU ·ð¤ â×ÍüÙ ×ð´ Îæð ×ãˆßÂê‡æü ·¤æÚU‡æ ÕÌ槰Ð
24.
Describe the unique property of water in respect of its thermal expansion as compared
to other liquids. Explain, why aquatic animals living in a lake of very cold region do
not die in severe winter despite of frozen surface of lake ?
4
¥‹Ø Îýßæð´ ·¤è ÌéÜÙæ ×ð´ ÂæÙè ×ð´ ª¤c×èØ ÂýâæÚU ·ð¤ ¥âæ×æ‹Ø »é‡æ ·¤æ ߇æüÙ ·¤èçÁ°Ð ¥ˆØçÏ·¤ Æ´UÇðU ÿæð˜æ ×ð´
çSÍÌ °·¤ ÛæèÜ ×ð´ ÚUãÙð ßæÜð ÁÜèØ Á‹Ìé ¥ˆØçÏ·¤ Æ´UÇU ·ð¤ ÎæñÚUæÙ ª¤ÂÚUè âÌã ·¤æ ÂæÙè Á×Ùð ÂÚU Öè €Øæð´ Ùãè´
×ÚUÌð ãñ´?
25.
Three elements ‘X’, ‘Y’ and ‘Z’ have atomic number 17, 01 and 11. ‘X’ reacts with ‘Y’
and ‘Z’ separately. What type of bond will be formed between ‘X’ and ‘Y’, and
‘X’ and ‘Z’ ? Write the formulae of the compounds formed by the reaction between
‘X’, ‘Y’ and ‘X’, ‘Z’. Compare the electrical conductivities of these two compounds and
mention the causes for difference.
4
ÌèÙ Ìˆß ‘X’, ‘Y’ ¥æñÚU ‘Z’ ·¤è ÂÚU×æ‡æé ⴁØæ ·ý¤×àæÑ 17, 01 ¥æñÚU 11 ãñÐ ‘X’ ¥Ü»-¥Ü» ‘Y’ ÌÍæ ‘Z’
âð ¥çÖç·ý¤Øæ ·¤ÚUÌæ ãñÐ ‘X’ ¥æñÚU ‘Y’ ÌÍæ ‘X’ ¥æñÚU ‘Z’ ·ð¤ Õè¿ ç·¤â Âý·¤æÚU ·ð¤ ¥æÕ´Ï ÕÙð´»ð? ‘X’ ¥æñÚU ‘Y’
ÌÍæ ‘X’ ¥æñÚU ‘Z’ ·¤è ¥çÖç·ý¤Øæ âð ÕÙÙð ßæÜð Øæñç»·¤æð´ ·¤æ âê˜æ çܹð´Ð §Ù ÎæðÙæð´ Øæñç»·¤æð´ ·¤è çßléÌ
¿æÜ·¤Ìæ¥æð´ ·¤è ÌéÜÙæ ·¤èçÁ° ÌÍæ ç֋ÙÌæ ·ð¤ çÜ° ·¤æÚU‡æ ÕÌ槰Ð
26.
Now-a-days why are farmers being encouraged to use organic manure as a major
alternative to fertilizers. Name any three organic manures. Describe how can we use
waste vegetable peels, rotten vegetable, leaves and grass etc. to prepare organic
manure ?
4
¥æÁ·¤Ü ç·¤âæÙæð´ ·¤æð ©ßüÚU·¤æð´ ·ð¤ SÍæÙ ÂÚU Áñçß·¤ ¹æÎæð´ ·¤æð Âý×é¹ çß·¤Ë ·ð¤ M¤Â ×ð´ âÌÌ÷ ÂýØæð» ·¤ÚUÙð ·ð¤
çÜ° €Øæð´ ÂýæðˆâæçãÌ ç·¤Øæ Áæ ÚUãæ ãñ? ç·¤‹ãè´ ÌèÙ Áñçß·¤ ¹æÎæð´ ·ð¤ Ùæ× ÕÌ槰Р߇æüÙ ·¤èçÁ° ç·¤ ¥æ Õð·¤æÚU
âçŽÁØæð´ ·ð¤ çÀUÜ·¤æð´, âǸè-»Üè âçŽÁØæð´, ÂçžæØæð´ ÌÍæ ƒææâ-Èê¤â ·¤æ ©ÂØæð» Áñçß·¤ ¹æÎ ÕÙæÙð ×ð´ ç·¤â Âý·¤æÚU
·¤Úð´U»ð?
49/HIS/1-212-A ]
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27.
(a)
Consider the following chemical reaction between iron and sulphur :
4
heat
Fe (s) 1 S (s) → Fe S (s)
In terms of loss and gain of electrons, explain to which type of reaction is this.
(b)
Why do the potato chips manufacturers usually flush in nitrogen gas bags of
fried potato chips ? Explain.
(a)
Ùè¿ð çΰ »° ¥æØÚUÙ °ß´ âËȤÚU ·ð¤ Õè¿ ÚUæâæØçÙ·¤ ¥çÖç·ý¤Øæ ÂÚU çß¿æÚU ·¤èçÁ° Ñ
heat
Fe (s) 1 S (s) → Fe S (s)
Øã ç·¤â Âý·¤æÚU ·¤è ÚUæâæØçÙ·¤ ¥çÖç·ý¤Øæ ãñ? ¥ÂÙ𠩞æÚU ·¤æ ¥æñç¿ˆØ ÕÌ槰Ð
(b)
28.
翌â çÙ×æüÌæ ¥çÏ·¤ÌÚU ÌÜð ãé° ¥æÜê 翌⠷ð¤ Õñ» ×ð´ Ùæ§ÅþæðÁÙ »ñ⠀Øæð´ ÂýßæçãÌ ·¤ÚUÌð ãñ´? ÃØæØæ
·¤èçÁ°Ð
Draw a simple diagram of human excretory system and label (i) kidneys (ii) ureters
(iii) urinary bladder and (iv) urethra on it. Write the functions of kidneys. Why is it
possible to survive even with one kidney ? Name any one technique which can be used
to save a patient whose both kidneys are damaged.
6
×æÙß ©ˆâÁüÙ Ì´˜æ ·¤æ °·¤ âÚUÜ ¥æÚðU¹ ÕÙ槰 ÌÍæ §â×ð´ (i) ß뀷¤ (ii) ×ê˜æßæçãÙè (iii) ×ê˜ææàæØ ¥æñÚU
(iv) ×ê˜æ ×æ»ü ·¤æð Ùæ×æ´ç·¤Ì ·¤èçÁ°Ð ß뀷¤ ·ð¤ ·¤æØü ÕÌ槰Р·ð¤ßÜ °·¤ ß뀷¤ ·ð¤ âãæÚðU ÁèçßÌ ÚUãÙæ €Øæð´
â´Öß ãñ? °·¤ °ðâæ ÚUæð»è çÁâ·ð¤ ÎæðÙæð´ ß뀷¤ ÿæçÌ»ýSÌ ãñ´, ©â·¤æð Õ¿æÙð ·ð¤ çÜ° ç·¤âè °·¤ Ì·¤Ùè·¤æð´ ·¤æ Ùæ×
ÕÌ槰Ð
29.
Explain three reasons of accidents that may be caused in our household circuits using
electricity. Describe the role of the following safety devices in preventing these accidents.
Explain.
(i)
Electrical fuse
(ii)
6
Earthing of electrical appliance
ƒæÚðUÜê çßléÌ ÂçÚUÂÍæð´ ×ð´ çßléÌ ·ð¤ ©ÂØæð» ·ð¤ ÎæñÚUæÙ ãæðÙð ßæÜè ÎéƒæüÅUÙæ¥æð´ ·ð¤ ÌèÙ ·¤æÚU‡ææð´ ·¤è ÃØæØæ ·¤èçÁ° Ð
çِÙçÜç¹Ì âéÚUÿææ Øéç€ÌØæð´ ·¤è §Ù ÎéƒæüÅUÙæ¥æð´ ·¤æð ÚUæð·¤Ùð ×𴠀Øæ Öêç×·¤æ ãñ? ÃØæØæ ·¤èçÁ°Ð
(i)
çßléÌ ØêÁ
49/HIS/1-212-A ]
(ii)
çßléÌ ©Â·¤ÚU‡ææð´ ·¤æ ÖêâÂ·ü¤Ù
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30.
(a)
State the postulates of Bohr’s model of atom. How could it solve the problem of
stability of atom faced by Rutherford model of atom ?
(b)
The atomic number of sulphur is 16. Draw its structure according to Bohr model
of atom. What is the number of electrons in its M and N shells ? Write valency of
sulphur atom.
(a)
ÕæðÚU ·ð¤ ÂÚU×æ‡æé ×æòÇUÜ ·¤è ¥ßÏæÚU‡ææ°´ ÕÌ槰РÚUÎÚUȤæðÇüU ÂÚU×æ‡æé ×æòÇUÜ ×ð´ ¥æ§ü ÂÚU×æ‡æé ·¤è çSÍÚUÌæ
·¤è â×SØæ ·¤æð §â·ð¤ mæÚUæ ç·¤â Âý·¤æÚU ãÜ ç·¤Øæ »Øæ?
(b)
âËȤÚU ·¤è ÂÚU×æ‡æé ⴁØæ 16 ãñÐ ÕæðÚU ×æòÇUÜ ·ð¤ ¥ÙéâæÚU §â·¤è â´ÚU¿Ùæ ¹è´ç¿ØðÐ §â·ð¤
·¤æðàæ ×ð´ §Üð€ÅþUæÙæð´ ·¤è ⴁØæ ç·¤ÌÙè-ç·¤ÌÙè ãñ? âËȤÚU ÂÚU×æ‡æé ·¤è â´ØæðÁ·¤Ìæ ÕÌ槰Ð
6
M ¥æñÚU N
-oOo-
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