51 A (çߙææÙ °ß´ Âýæñlæðç»·¤è) SCIENCE AND TECHNOLOGY

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´.
51/AS/3
SCIENCE AND TECHNOLOGY
Set
(çߙææÙ °ß´ Âýæñlæðç»·¤è)
A
(212)
Day and Date of Examination
ÂÚUèÿææ ·¤æ çÎÙ ß çÎÙæ´·¤
Signature of Invigilators
1.
çÙÚUèÿæ·¤æð´ ·ð¤ ãSÌæÿæÚU
2.
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1.
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2.
Please check the Question Paper to verify that the total pages and total number of questions
contained in the Question Paper are the same as those printed on the top of the first page.
Also check to see that the questions are in sequential order.
3.
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4.
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than the specified places will lead to disqualification of the candidate.
6.
Write your Question Paper code No.
7.
(a)
(b)
51/AS/3-A on the Answer-Book.
The Question Paper is in English/Hindi medium only. However, if you wish, you can
answer in any one of the languages listed below :
English, Hindi, Urdu, Punjabi, Bengali, Tamil, Malayalam, Kannada, Telugu, Marathi,
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responsibility for any errors/mistakes in understanding the question will be yours only.
51/AS/3-212-A ]
1
!51/AS/3-212-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 51/AS/3-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
51/AS/3-212-A ]
2
!51/AS/3-212-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.
Which of the following is most appropriate reason for flushing bags of fried potato
chips with nitrogen gas by the chips manufacturers ?
(A)
To keep the chips dry and crisp.
(B)
To prevent oxidation of oil present in chips.
(C)
To prevent formation of fungus on chips.
(D)
To prevent corrosion of chips.
1
ÌÜð ãé° ¥æÜê 翌⠷ð¤ Õñ» ×ð´ 翌â çÙ×æüÌæ mæÚUæ Ùæ§ÅþUæðÁÙ »ñâ ·¤æð ÂýßæçãÌ ·¤ÚUÙð ·¤æ çِÙçÜç¹Ì ×ð´ âð ·¤æñÙ
âæ âÕâð ©ÂØé€Ì ·¤æÚU‡æ ãñ?
2.
(A)
翌⠷¤æð âê¹æ ¥æñÚU ·é¤ÚU·é¤ÚUæ ÚU¹Ùð ·ð¤ çÜ°Ð
(B)
翌â ×ð´ ×æñÁêÎ ÌðÜ ·¤æ ¥æò€âè·¤ÚU‡æ ÚUæð·¤Ùð ·ð¤ çÜ°Ð
(C)
翌â ÂÚU Èê¤È´¤Îè (·¤ß·¤) ÕÙÙð âð ÚUæð·¤Ùð ·ð¤ çÜ°Ð
(D)
翌⠷¤æ â´ÿææÚU‡æ ÚUæð·¤Ùð ·ð¤ çÜ°Ð
The oil rises up in a cotton wick of a lighted lamp because of :
(A)
its viscosity
(B)
capillarity
(C)
polar nature of oil
(D)
low density of oil
1
°·¤ ÁÜÌð ãé° Îè·¤ ·¤è M¤§ü ·¤è ÕæÌè ×ð´ ÌðÜ ·ð¤ ª¤ÂÚU ¿É¸Ùð ·¤æ ·¤æÚU‡æ ãñ Ñ
(A)
§â·¤è àØæÙÌæ
(B)
·ð¤çàæ·¤ˆß
(C)
ÌðÜ ·¤è ÏýéßèØ Âý·ë¤çÌ
(D)
ÌðÜ ·¤æ çِ٠ƒæوß
51/AS/3-212-A ]
3
!51/AS/3-212-A!
[ Contd...
3.
Consider the following chain :
1
Water ® Algae ® Fish ® Pelican bird
If DDT is present in water, which of the following will have maximum concentration
of DDT ?
(A)
Water
(B)
Algae
(C)
Fish
(D)
Pelican bird
çِÙçÜç¹Ì o´ë¹Üæ ÂÚU çß¿æÚU ·¤èçÁ° Ñ
ÁÜ
® àæñßæÜ ® ×ÀUÜè ® ÂðçÜ·¤Ù
ç¿çǸØæ
ØçÎ ÁÜ ×ð´ ÇUè.ÇUè.ÅUè (DDT) çßl×æÙ ãñ Ìæð çِÙçÜç¹Ì ×ð´ âð ç·¤â×ð´ ÇUè.ÇUè.ÅUè ·¤è âæ´ÎýÌæ ©‘¿žæ× ãæð»è?
(A)
4.
ÁÜ
(B)
àæñßæÜ
(C)
×ÀUÜè
(D)
ÂðçÜ·¤Ù ç¿çǸØæ
When there is sudden dust storm, we immediately close our eyes. This reaction is
controlled by :
(A)
Cerebrum
(B)
Cerebellum
(C)
Medulla oblongata
(D)
Spinal cord
1
ÁÕ ·¤Öè ¥¿æÙ·¤ ÏêÜ ÖÚUè ¥æ´Ïè ¥æÌè ãñ ÌÕ ã× ¥ÂÙè ¥æ¡¹æð´ ·¤æð Õ´Î ·¤ÚU ÜðÌð ãñ´Ð Øã ÂýçÌç·ý¤Øæ çÙØ´ç˜æÌ
ãæðÌè ãñ Ñ
5.
(A)
Âý×çSÌc·¤ mæÚUæ
(B)
¥Ùé×çSÌc·¤ mæÚUæ
(C)
×ðÇéUÜæ ¥æòŽÜæ´»ðÅUæ mæÚUæ
(D)
×ðM¤-ÚU’Áé mæÚUæ
Sand in deserts cools faster than sea water during nights because :
(A)
Sand is solid whereas sea water is liquid
(B)
Sand is pure whereas sea water contains salts
(C)
Specific heat of sand is lower than sea water
(D)
Sea water possesses more energy due to its motion as compared to sand
1
ÚUæç˜æ ·ð¤ ÎæñÚUæÙ â×éÎý ·ð¤ ÂæÙè ·¤è ÌéÜÙæ ×ð´ ÚðUç»SÌæÙ ·¤è ÚðUÌ Ìð$Áè âð Æ´UÇUè ãæðÌè ãñ €Øæð´ç·¤ Ñ
(A)
ÚðUÌ ÆUæðâ ãñ ÁÕç·¤ â×éÎý ·¤æ ÂæÙè Îýß
(B)
ÚðUÌ àæéh ãæðÌè ãñ ÁÕç·¤ â×éÎý ·ð¤ ÂæÙè ×ð´ Ü߇æ ãæðÌð ãñ´
(C)
â×éÎý ·ð¤ ÂæÙè ·¤è ÌéÜÙæ ×ð´ ÚðUÌ ·¤è çßçàæcÅU ª¤c×æ ·¤× ãæðÌè ãñ
(D)
ÚðUÌ ·¤è ÌéÜÙæ ×ð´ â×éÎý ·ð¤ ÂæÙè ·¤è ª¤Áæü ¥çÏ·¤ ãæðÌè ãñ €Øæ´ðç·¤ Øã »çÌàæèÜ ãñÐ
51/AS/3-212-A ]
4
!51/AS/3-212-A!
[ Contd...
6.
An element reacts with oxygen to form an oxide which dissolves in water to form a
solution that turns blue litmus red. The oxide dissolves in NaOH to form salt and
water. The element is :
(A)
Sodium
(B)
Sulphur
(C)
Magnesium
(D)
1
Aluminium
°·¤ Ìˆß ¥æò€âèÁÙ ·ð¤ âæÍ ç·ý¤Øæ ·¤ÚU·ð¤ ¥æò€âæ§ÇU ÕÙæÌæ ãñ Áæð ÂæÙè ×𴠃æéÜ ÁæÌæ ãñÐ ¥æò€âæ§ÇU ·¤æ ÁÜ ×ð´
Øã çßÜØÙ ÙèÜð çÜÅU×â ·¤æð ÜæÜ ·¤ÚU ÎðÌæ ãñÐ Øã ¥æò€âæ§ÇU NaOH ×𴠃æéÜ·¤ÚU Ü߇æ ÌÍæ ÂæÙè ÕÙæÌæ ãñÐ
Øã Ìˆß ãñ Ñ
(A)
7.
âæðçÇUØ×
(B)
âËȤÚU
(C)
×ñ‚ÙèçàæØ×
(D)
°ËØé×èçÙØ×
Which of the following is not the sign of good mental health ?
(A)
Sensitivity towards needs of others
(B)
Very emotional
(C)
Full of confidence
(D)
Abibility to cope with conflict and disagreement
1
çِÙçÜç¹Ì ×ð´ âð ·¤æñÙ ¥‘ÀðU ×æÙçâ·¤ SßæS‰Ø ·¤æ â´·ð¤Ì Ùãè´ ãñ?
8.
(A)
ÎêâÚUæð´ ·¤è ¥æßàØ·¤Ìæ¥æð´ ·ð¤ ÂýçÌ â´ßðÎÙàæèÜÌæÐ
(B)
¥ˆØçÏ·¤ Öæßé·¤ ãæðÙæÐ
(C)
¥æˆ×çßàßæâ âð ÖÚUÂêÚU ãæðÙæÐ
(D)
çßÚUæðÏ ¥æñÚU ¥âã×çÌ ·¤è çSÍçÌ ãæðÙð ÂÚU ©Ù·¤æ âæ×Ùæ ·¤ÚUÙæÐ
What will you observe when drops of methyl orange are added in a test tube containing
sour milk ?
(A)
Content of the test tube will turn red
(B)
Content of the test tube will turn orange
(C)
Content of the test tube will turn yellow
(D)
Content of the test tube will turn blue
1
°·¤ ÂÚU¹ÙÜè ×ð´ ÚU¹ð ¹^ð ÎêÏ ×ð´ ×èÍæ§Ü ¥æñÚð´UÁ ·¤è Õ¡êδð ÇUæÜÙð ÂÚU ¥æ €Øæ ÂýðçÿæÌ ·¤Úð´U»ð?
(A)
ÂÚU¹ÙÜè ·¤æ ÂÎæÍü ÜæÜ Ú´U» ·¤æ ãæð Áæ°»æÐ
(B)
ÂÚU¹ÙÜè ·¤æ ÂÎæÍü ×èÍæ§Ü ¥æñÚð´UÁ ÙæÚU´»è Ú´U» ·¤æ ãæð Áæ°»æÐ
(C)
ÂÚU¹ÙÜè ·¤æ ÂÎæÍü ÂèÜð Ú´U» ·¤æ ãæð Áæ°»æÐ
(D)
ÂÚU¹ÙÜè ·¤æ ÂÎæÍü ÙèÜð Ú´U» ·¤æ ãæð Áæ°»æÐ
51/AS/3-212-A ]
5
!51/AS/3-212-A!
[ Contd...
9.
A body dropped from certain height falls freely under gravity. Which of the following
graphs represents the relationship between velocity and time of the body during its
motion ?
1
ç·¤âè ª¡¤¿æ§ü âð ÀUæðǸÙð ÂÚU °·¤ ßSÌé »éL¤ˆßèØ ÿæð˜æ ×ð´ ×é€Ì M¤Â âð ç»ÚUÌè ãñÐ çِÙçÜç¹Ì ×ð´ âð ·¤æñÙ âæ »ýæȤ
ßSÌé ·ð¤ ßð» ¥æñÚU â×Ø ·¤æð ©â·¤è »çÌ ·ð¤ ÎæñÚUæÙ ÎàææüÌæ ãñ?
10.
(A)
(B)
(C)
(D)
Explain nuclear fission. Give reason for the release of huge amount of energy during
nuclear fission.
2
ÙæçÖ·¤èØ çß¹´ÇUÙ ·¤è ÃØæØæ ·¤èçÁ°Ð ÙæçÖ·¤èØ çß¹´ÇUÙ ·ð¤ ÎæñÚUæÙ ÕǸð ÂçÚU×æ‡æ ×ð´ ª¤Áæü €Øæð´ ×é€Ì ãæðÌè ãñ?
11.
2
Differentiate between ‘Mitosis’ and ‘Meiosis’. Give one example of each of these.
â×âê˜æè çßÖæÁÙ ÌÍæ ¥Ïüâê˜æè çßÖæÁÙ ×ð´ ¥´ÌÚU ÕÌ槰РÂýˆØð·¤ ·¤æ °·¤ °·¤ ©ÎæãÚU‡æ ÎèçÁ°Ð
12.
What is meant by third degree burn ? What first aid would you give to a person who
has received such burn ?
2
ÒÌëÌèØ SÌÚU ·¤æ ÁÜÙæÓ âð €Øæ ¥çÖÂýæØ ãñ? §â SÌÚU âð ÁÜð ÃØç€Ì ·¤æð ¥æ €Øæ ÂýæÍç×·¤ ©Â¿æÚU Îð´»ð?
13.
What is haemoglobin ? Name the blood cells which contain haemoglobin. Write one
important function of haemoglobin.
2
ãè×æð‚ÜæðçÕÙ €Øæ ãñ? ©â L¤çÏÚU ·¤æðçàæ·¤æ ·¤æ Ùæ× ÕÌ槰 çÁâ×ð´ Øã ãæðÌæ ãñ? ãè×æð‚ÜæðçÕÙ ·¤æ °·¤ ·¤æØü
ÕÌ槰Ð
51/AS/3-212-A ]
6
!51/AS/3-212-A!
[ Contd...
14.
Explain why does a sewing needle have a sharp pointed tip ?
2
â×Ûæ槰 ç·¤ çâÜÙð ßæÜè âé§ü ·¤è Ùæð·¤ ÌðÁ Ùé·¤èÜè €Øæð´ ãæðÌè ãñ?
15.
Draw a ray diagram to explain formation of small and erect image of big object in a
rear view mirror of a car.
2
·¤æÚU ×ð´ ÂèÀðU ·ð¤ ÎëàØ Îð¹Ùð ·ð¤ çÜ° Ü»ð ÎÂü‡æ ×ð´ °·¤ ÕǸè ßSÌé ·ð¤ ÀUæðÅðU ¥æñÚU âèÏð ÂýçÌçÕÕ ·¤æ ÕÙÙæ â×ÛææÙð
·ð¤ çÜ° °·¤ ç·¤ÚU‡æ ¥æÚðU¹ ¹è´ç¿°Ð
16.
An element ‘A’ has atomic number 12 and ‘B’ has atomic number 8. What type of
bond will be formed between them and why ? Write the formula of the compound
formed.
2
°·¤ Ìˆß ‘A’ ·¤è ÂÚU×æ‡æé ⴁØæ 12 ãñ ÌÍæ Ìˆß ‘B’ ·¤è ÂÚU×æ‡æé ⴁØæ 8 ãñÐ §Ù·ð¤ Õè¿ ç·¤â Âý·¤æÚU ·¤æ
¥æÕ´Ï ÕÙð»æ ¥æñÚU €Øæ´ð? §â Âý·¤æÚU ÕÙÙð ßæÜð Øæñç»·¤ ·¤æ âê˜æ çÜç¹°Ð
17.
18.
(a)
Write the SI unit of work in terms of base units. What is the special name and
symbol of this unit ?
(b)
Represent the following measurements by using suitable SI prefixes :
(i)
Radius of Sun 5 6.93108 m
(ii)
Radius of hydrogen atom 5 5310211 m
(a)
·¤æØü ·¤æ SI ×æ˜æ·¤ ×êÜ ×æ˜æ·¤ ·ð¤ ÂÎæð´ ×ð´ çÜç¹°Ð §â ×æ˜æ·¤ ·¤æ çßçàæcÅU Ùæ× ÌÍæ ÂýÌè·¤ €Øæ ãñ?
(b)
©ÂØé€Ì SI Âêßü܂Ùæð´ ·¤æ ÂýØæð» ·¤ÚU çِÙçÜç¹Ì ×æÂæð´ ·¤æð çÙM¤çÂÌ ·¤èçÁ° Ñ
(i)
âêØü ·¤è ç˜æ’Øæ
(ii)
ãæ§ÇþUæðÁÙ ·ð¤ °·¤ ÂÚU×æ‡æé ·¤è ç˜æ’Øæ
4
5 6.93108 m
5 5310211 m
Write the name and structure of the (i) simplest alkyne and (ii) simplest alkene. Also
write the general formula of homologous series of alkenes.
4
âÕâð âÚUÜ °Ë·¤æ§Ù ÌÍæ (ii) âÕâð âÚUÜ °Ë·¤èÙ ·¤æ Ùæ× ÌÍæ â´ÚU¿Ùæ çÜç¹°Ð °Ë·¤èÙæð´ ·¤è âÁæÌèØ
Ÿæð‡æè ·ð¤ çÜ° âæ×æ‹Ø âê˜æ Öè çÜç¹°Ð
(i)
51/AS/3-212-A ]
7
!51/AS/3-212-A!
[ Contd...
19.
What is meant by ozone hole ? What are its causes ? Write two hazards of ozone hole.
Suggest two ways to prevent damage to ozone layer.
4
¥æðÁæðÙ çÀUÎý ·¤æ ¥Íü €Øæ ãñ? §â·ð¤ ÕÙÙð ·ð¤ €Øæ ·¤æÚU‡æ ãñ´? ¥æðÁæðÙ çÀUÎý âð ãæðÙð ßæÜð Îæð ¹ÌÚðU ÕÌ槰Ð
¥æðÁæðÙ ÂÚUÌ ·¤æð ¥ßÿæØ âð Õ¿æÙð ·ð¤ çÜ° Îæð ÌÚUè·ð¤ âéÛæ槰Ð
20.
Give reasons for the following :
4
(a)
An iron nail sinks in water whereas huge ship floats in water.
(b)
A fielder moves his hands backward while catching a fast moving cricket ball.
çِÙçÜç¹Ì ·ð¤ çÜ° ·¤æÚU‡æ ÕÌ槰 Ñ
21.
22.
(a)
°·¤ Üæðãð ·¤è ·¤èÜ ÂæÙè ×ð´ ÇêUÕ ÁæÌè ãñ ÁÕç·¤ çßàææÜ ÁãæÁ ÂæÙè ×ð´ ÌñÚUÌæ ÚUãÌæ ãñÐ
(b)
ÌðÁ »çÌ âð ¥æÌè ç·ý¤·ð¤ÅU »ð´Î ·¤æð Ü·¤Ìð â×Ø ÿæð˜æ ÚUÿæ·¤ ¥ÂÙð ãæÍæð´ ·¤æð ÂèÀðU ·¤è ¥æðÚU Üð ÁæÌæ ãñÐ
(a)
Define a gene with respect to its chemical nature. Explain the difference in the
gene combination of two persons having blood group A and O.
(b)
Name any one genetic disorder. Explain its cause and write its symptoms.
(a)
ÁèÙ ·¤è ÂçÚUÖæáæ §â·¤è ÚUæâæØçÙ·¤ Âý·ë¤çÌ ·ð¤ â´ÎÖü ×ð´ ·¤èçÁ°Ð ÚU€Ì â×êã
ÃØç€ÌØæð´ ·ð¤ ÁèÙ â´ØæðÁÙ ×ð´ ¥´ÌÚU ·¤æð â×Ûæ槰Ð
(b)
ç·¤âè °·¤ ¥æÙéß´çàæ·¤ çß·¤æÚU ·¤æ Ùæ× ÕÌ槰Р§â·ð¤ ãæðÙð ·ð¤ ·¤æÚU‡æ â×Ûæ槰 ÌÍæ §â·ð¤ Üÿæ‡æ
çÜç¹°Ð
A
ÌÍæ
O
4
ßæÜð Îæð
Give reasons for the following :
4
(i)
During severe winter acquatic animals do not die even in frozen lake.
(ii)
A green layer is formed on a statue made of copper after some time.
çِÙçÜç¹Ì ·ð¤ çÜ° ·¤æÚU‡æ ÕÌ槰 Ñ
(i)
¥ˆØçÏ·¤ âÎèü ·ð¤ ÎæñÚUæÙ Á×è ãé§ü ÛæèÜ ×ð´ Öè ÁÜèØ Á‹Ìé Ùãè´ ×ÚUÌð ãñ´Ð
(ii)
·é¤ÀU â×Ø Âà¿æÌ Ìæ¡Õð ·¤è ×êçÌü ÂÚU ãÚðU Ú´U» ·¤è ÂÚUÌ ÕÙ ÁæÌè ãñÐ
51/AS/3-212-A ]
8
!51/AS/3-212-A!
[ Contd...
23.
Consider the following electric circuit.
4
Calculate :
(a) The reading of ideal ammeter A in the circuit.
(b) The reading of voltmeter V connected across 3 V resistor.
Ùè¿ð çΰ »° çßléÌ ÂçÚUÂÍ ÂÚU çß¿æÚU ·¤èçÁ° Ñ
»‡æÙæ ·¤èçÁ° Ñ
(a) ÂçÚUÂÍ ×ð´ Ü»ð ¥æÎàæü °ð×èÅUÚU A ·¤æ ÂæÆUKæ´·¤
(b) 3 V ÂýçÌÚUæðÏ ·ð¤ çâÚðU âð ÁéǸð ßæðËÅU×èÅUÚU V ·¤æ ÂæÆUKæ´·¤
24.
(a) State (i) law of constant proportion and (ii) law of multiple proportion
(b) Nitrogen forms three oxides : NO, NO2 and N2O3.
Show that these obey law of multiple proportion.
[Given : At. mass N514 u, O516 u]
(a) (i) çSÍÚU â×æÙéÂæÌ çÙØ× ÌÍæ (ii) »éç‡æÌ ¥ÙéÂæÌ çÙØ× ·ð¤ ·¤ÍÙ çÜç¹°Ð
4
Ùæ§ÅþUæðÁÙ âð ÌèÙ ÌÚU㠷𤠥æò€âæ§ÇU ÕÙÌð ãñ´ Ñ NO, NO2 ¥æñÚU N2O3 Ð
çιæ§Øð ç·¤ Øð »éç‡æÌ ¥ÙéÂæÌ çÙØ× ·¤æ ¥ÙéâÚU‡æ ·¤ÚUÌð ãñ´Ð
[çÎØð »Øð : ÂÚU×æ‡æé â´ãçÌ At. mass N514 u, O516 u]
(b)
25.
Explain the postulates of Bohr’s model of atom. How does this model of atom explain
the stability of the atom ?
4
What is the difference between multiple cropping and mixed cropping ? Explain why
these two methods are considered better from the perspective of food security ?
4
ÕæðÚU ·ð¤ ÂÚU×æ‡æé ×æòÇUÜ ·¤è ¥ßÏæÚU‡ææ°¡ â×Ûæ槰РØã ×æòÇUÜ ÂÚ×æ‡æé ·¤è çSÍÚUÌæ ·¤è ÃØæØæ ·ñ¤âð ·¤ÚUÌæ ãñ?
26.
ç×çŸæÌ ¹ðÌè ÌÍæ Õãé ȤâÜæðˆÂæÎÙ ×𴠀Øæ ¥´ÌÚU ãñ? ÃØæØæ ·¤èçÁ° ç·¤ ¹æl âéÚUÿææ ·¤è ÎëçcÅU âð Øð ÎæðÙæð´
çßçÏØæ¡ €Øæð´ ÕðãÌÚU ×æÙè ÁæÌè ãñ´?
51/AS/3-212-A ]
9
!51/AS/3-212-A!
[ Contd...
27.
Consider the following chemical reaction and answer the questions that follow :
4
H2(g)1Cl2(g) ® 2 HCl (g)
(i)
Which substance has been oxidized and why ?
(ii)
Which substance has been reduced and why ?
(iii)
Which substance is acting as oxidising agent and why ?
(iv)
Which substance is acting as reducing agent and why ?
(v)
Name the type of chemical reaction.
çِÙçÜç¹Ì ÚUæâæØçÙ·¤ â×è·¤ÚU‡æ ÂÚU çß¿æÚU ·¤èçÁ° ¥æñÚU ¥æ»ð çΰ »° ÂýàÙæ𴠷𤠩žæÚU ÎèçÁ° Ñ
H2(g)1Cl2(g) ® 2 HCl (g)
28.
(i)
·¤æñÙ âð ÂÎæÍü ·¤æ ©Â¿ØÙ ãæðÌæ ãñ ¥æñÚU €Øæð´?
(ii)
·¤æñÙ âð ÂÎæÍü ·¤æ ¥Â¿ØÙ ãæðÌæ ãñ ¥æñÚU €Øæð´?
(iii)
·¤æñÙ âæ ÂÎæÍü ¥æ€âè·¤æÚU·¤ ãñ ¥æñÚU €Øæð´?
(iv)
·¤æñÙ âæ ÂÎæÍü ¥Â¿æØ·¤ ãñ ¥æñÚU €Øæð´?
(v)
ÚUæâæØçÙ·¤ ¥çÖç·ý¤Øæ ·¤æ Âý·¤æÚU ÕÌ槰Ð
List the nutrients which are part of a balanced diet. How does each of these nutrients
keep us healthy ? Deficiency of which nutrient in the diet causes ‘ Kwashiorkor’ disease
in the children ?
6
©Ù Âæðá·¤ ÂÎæÍæðZ ·¤è âê¿è ÕÙ槰 Áæð ã×æÚðU â´ÌéçÜÌ ¥æãæÚU ·¤æ Öæ» ¥ßàØ ãæðÙð ¿æçã°Ð ÕÌ槰 ç·¤ §Ù×ð´ âð
ÂýˆØð·¤ Âæðá·¤ ã×ð´ SßS‰Ø ÚUãÙð ×ð´ ·ñ¤âð âãæØÌæ ·¤ÚUÌæ ãñ? ÖæðÁÙ ×ð´ ç·¤â Âæðá·¤ ÂÎæÍü ·¤è ·¤×è ·ð¤ ·¤æÚU‡æ
Ց¿æð´ ×ð´ ҀßæçàæØæðÚU·¤æðÚÓU ÚUæð» ãæðÌæ ãñ?
29.
(a)
Explain the principle of working of an electric generator. Draw a labelled diagram
showing different parts of a D.C. generator.
(b)
Can electric current be generated by rotating the magnets and keeping the coil of
wire stationary in a generator ? Give reason for your answer.
(a)
çßléÌ ÁçÙ˜æ ·¤è ·¤æØüçßçÏ ·ð¤ çâhæ‹Ì ·¤è ÃØæØæ ·¤èçÁ°Ð °·¤ Ùæ×æ´ç·¤Ì ÚðU¹æ翘æ ÕÙæ·¤ÚU °·¤çÎcÅU
ÏæÚUæ ÁçÙ˜æ ·ð¤ çßç֋٠Öæ» Îàææü§°Ð
(b)
Áç٘æ ×𴠀Øæ ÌæÚUæð´ ·¤è ·é¤‡ÇUÜè ·¤æð çSÍÚU ÚU¹·¤ÚU ÌÍæ ¿éÕ·¤ ·¤æð ƒæé×æ·¤ÚU çßléÌ ©ˆÂ‹Ù ·¤ÚU â·¤Ìð ãñ´?
¥ÂÙ𠩞æÚU ·ð¤ çÜ° ·¤æÚU‡æ ÎèçÁ°Ð
51/AS/3-212-A ]
10
!51/AS/3-212-A!
6
[ Contd...
30.
Write main characteristics of the following types of elements. Where are they located
in the modern periodic table ?
(i)
Metalloids
(ii)
Transition elements
(iii)
Noble gases
(iv)
Main group elements
6
çِÙçÜç¹Ì Âý·¤æÚU ·ð¤ ̈ßæð´ ·¤è Âý×é¹ çßàæðáÌæ°´ çÜç¹°Ð Øã Öè ÕÌ槰 ç·¤ Øã ¥æÏéçÙ·¤ ¥æßÌü âæÚU‡æè ×ð´
·¤ãæ¡ çSÍÌ ãñ´?
(i)
©ÂÏæÌé
(ii)
â´·ý¤×‡æ ̈ß
(iii)
©ˆ·ë¤cÅU »ñâ
(iv)
×éØ ß»ü ̈ß
-oOo-
51/AS/3-212-A ]
11
!51/AS/3-212-A!
[ Contd...