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Karnataka School Examination and Assessment Board
QUESTION
PAPERS
2024
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CCE RF/PF/RR/PR/NSR/NSPR(A)/666/018
B∆«M•⁄ O⁄}⁄¬° “
A
Question Paper Serial No.
Jlflo »⁄flfl¶√}⁄ Æ⁄‚¥lV⁄◊⁄ —⁄MSÊ¿ : 16 ]
Total No. of Printed Pages : 16 ]
Jlflo Æ⁄√ÀÊ-V⁄◊⁄ —⁄MSÊ¿ : 38 ] CCE RF/PF/RR/
PR/NSR/NSPR
Total No. of Questions : 38 ]
FULL SYLLABUS
—⁄MOÊfi}⁄ —⁄MSÊ¿ : 83-E
Code No. : 83-E
…Œ⁄æ⁄fl : …e¤k´⁄
TEAR HERE TO OPEN THE QUESTION PAPER
Subject : SCIENCE
(»èñÜ ËþÝ®Ü, ÃÜÓÝ¿á®Ü ËþÝ®Ü ÊÜáñÜᤠiàÊÜ ËþÝ®Ü / Physics, Chemistry & Biology )
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( AMV⁄« »⁄·¤®⁄¥¿»⁄fl / English Medium )
(ÍÝÇÝ A»Ü¦ì / TÝÓÜX A»Ü¦ì / ÍÝÇÝ ±Üâ®ÜÃÝÊÜ£ìñÜ A»Ü¦ì / TÝÓÜX ±Üâ®ÜÃÝÊÜ£ìñÜ
30. 03. 2024
A»Ü¦ì / G®….GÓ….BÃ…. / G®….GÓ….².BÃ….)
(Regular Fresh / Private Fresh / Regular Repeater / Private Repeater / NSR / NSPR)
¶´¤MO⁄ : 30. 03. 2024 ] [ Date : 30. 03. 2024
ÓÜÊÜá¿á : ¸æÙÜWæY 10-15 Äí¨Ü ÊÜá«ÝÂÖܰ 1-30 ÃÜÊÜÃæWæ ] [ Time : 10-15 A.M. to 1-30 P.M.
V⁄¬Œ⁄r @MO⁄V⁄◊⁄fl : 80 ] [ Max. Marks : 80
General Instructions to the Candidate : Cut here /B∆« O⁄}°⁄¬“
1. There are three parts in the question paper :
Part A : Physics, Part B : Chemistry, Part C : Biology.
2. This question paper consists of 38 questions in all.
3. This question paper has been sealed by reverse jacket. You have to cut
on the right side to open the paper at the time of commencement of
the examination ( Follow the arrow ). Do not cut the left side to open
the paper. Check whether all the pages of the question paper are intact.
4. Follow the instructions given against the questions.
5. Figures in the right hand margin indicate maximum marks for the
questions.
6. The maximum time to answer the paper is given at the top of the
question paper. It includes 15 minutes for reading the question paper.
7. Ensure that the Version of the question paper distributed to you and
Tear here
the Version printed on your admission ticket is the same.
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CCE RF/PF/RR/PR/NSR/NSPR(A)/666/018 83-E
PART – A
( PHYSICS )
I. Four alternatives are given for each of the following questions /
incomplete statements. Choose the correct alternative and write
the complete answer along with its letter of alphabet. 3×1=3
1. Element used in the solar cell is
(A) carbon (B) silicon
(C) phosphorus (D) sulphur
2. In an electric circuit to get an equivalent resistance R s four
resistors of 2 Ω each are first connected in series. Later to get an
equivalent resistance of R p the same resistors are connected in
parallel. Then the ratio of R s / R p is
(A) 16 : 1 (B) 2:1
(C) 4:1 (D) 8:1
3. Right statement regarding the colour of the scattered sunlight
and the size of scattering atmospheric particles is
(A) small particles scatter red colour
(B) big particles scatter blue colour
(C) big particles scatter violet colour
(D) too larger particles scatter all colours equally
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CCE RF/PF/RR/PR/NSR/NSPR(A)/666/018 83-E
II. Answer the following questions : 2×1=2
4. Write the symbols of the following components used in an
electric circuit :
i) Combination of two cells
ii) Wires crossing without joining.
5. Can an electric heater of 2kW be connected to a domestic circuit
rated 15 A and has a potential difference of 220V ? Support your
answer.
III. Answer the following questions : 3×2=6
6. What is spectrum of white light ? Name any two phenomena that
occur in the atmosphere due to the refraction of light.
OR
What is cataract of eye ? What are the near point and far point of
the human eye with normal vision ?
7. “Production of nuclear energy is advantageous and also
disadvantageous.” Clarify this statement with suitable
explanation.
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CCE RF/PF/RR/PR/NSR/NSPR(A)/666/018 83-E
8. A person who has a defect of the eye as shown in the below
figure purchases a spectacle having lens of – 2·0D power. Is this
lens suitable to rectify the eye defect of that person ? Analyse.
IV. Answer the following questions : 3×3=9
9. Draw the ray diagram of image formation when the object is kept
at 2F1 of the convex lens. With the help of ray diagram mention
the position and the nature of the image formed.
( F 1 : Principal focus of the lens )
10. 200J of heat is produced each second in a 8Ω resistance. Find
the potential difference across the resistor.
OR
An electric refrigerator rated 300W operates 6 hours in a day.
What is the cost of the energy to operate it for 30 days at
Rs. 7·00 per kWh ?
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11. In domestic circuits,
i) What are the reasons for overloading ?
ii) Explain the working of earth wire.
OR
A coil of insulated copper wire is connected to a galvanometer.
What will happen if a bar magnet is
i) pushed into the coil ?
ii) withdrawn from inside the coil ?
iii) held stationary inside the coil ?
V. Answer the following questions : 2×4=8
12. a) State the right hand thumb rule. Write any two properties
of the magnetic field lines.
b) What is solenoid ? How can this be converted into an
electromagnet ?
13. a) State two laws of reflection of light.
b) Write any two differences between concave mirror and
convex mirror.
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PART – B
( CHEMISTRY )
VI. Four alternatives are given for each of the following questions /
incomplete statements. Choose the correct alternative and write
the complete answer along with its letter of alphabet. 3×1=3
14. Organic compounds obtained by the reaction between carboxylic
acid and alcohol are
(A) Aldehydes (B) Ketones
(C) Esters (D) Hydrocarbons
15. Ferrous sulphate crystals lose green colour when heated.
Because this compound
(A) decomposes into simpler products
(B) loses water molecules
(C) releases sulphur dioxide gas
(D) produces brown fumes
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16. One limitation of Mendeleev’s periodic table is, this
classification
(A) was applicable only up to calcium
(B) suitable only for lighter elements
(C) has not provided definite position for noble gases
(D) has not assigned a fixed position to hydrogen
VII. Answer the following question : 3×1=3
17. Write any two uses of washing soda.
18. What are ‘periods’ and ‘groups’ in modern periodic table ?
19. Observe the electronic configurations of four elements given in
the following table and answer the below given question :
Elements Electronic configuration
e 2, 8, 2
f 2, 7
g 2, 8, 8, 1
h 2, 8, 7
Arrange these elements in the decreasing order of their atomic
radii ( atomic size ).
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VIII. Answer the following questions : 3×2=6
20. Draw the diagram of the arrangement of apparatus showing the
reaction of zinc granules with dilute sulphuric acid and testing
hydrogen gas by burning.
21. Simultaneously red and blue litmus papers are dipped in the
brine solution and in the aqueous product produced by
subjecting that solution to electrolysis. What changes do you
observe in litmus papers ? Support your answer with reasons.
OR
Observe the pH values of four solutions given in the following
table and answer the questions below.
Solutions → P Q R S
pH values 10·0 13·7 7·0 1·2
i) Which solution can be used to prepare an antacid ? Why ?
ii) Which two solutions can be used to get a neutral salt ?
Why ?
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22. Draw the diagram of arrangement of apparatus showing the
electrolytic refining of copper and label ‘acidified copper
sulphate’ solution.
IX. Answer the following questions : 3×3=9
23. a) Identify the substances that are oxidised and reduced in
the following chemical reaction :
ZnO + C → Zn + CO
b) What is rancidity ? Mention any two methods to prevent
rancidity.
24. Given below an incomplete equation that represents a chemical
process of converting an unsaturated carbon compound to
saturated carbon compound.
i) Complete the equation.
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ii) Name the gas ‘x’ and the substance ‘y’ .
iii) What happens if the end products of this reaction react
with chlorine in the presence of sunlight ?
25. a) Carbon could not form C 4 + or C 4 − ions. Why ?
b) Write the electron dot structure of methane.
OR
a) How micelles are formed during cleansing action of soap ?
b) Which are the salts responsible for hardness of water ?
Detergents are effective even in hard water. Why ?
X. Answer the following question : 1×4=4
26. a) How silver and copper articles lose their shining surface ?
How does galvanisation protect iron articles ?
b) Aluminium oxide is an amphoteric oxide. Why ?
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PART – C
( BIOLOGY )
XI. Four alternatives are given for each of the following questions /
incomplete statements. Choose the correct alternative and write
the complete answer along with its letter of alphabet. 2×1=2
27. An illustration for reflex action among the following is,
(A) moving a chair
(B) feeling the taste
(C) withdrawing hands back when unknowingly touch a hot
pan
(D) clapping at the end of the function
28. Pea plants with round seeds ( RR ) are crossed with pea plants
with wrinkled seeds ( rr ). The percentage of plants that are
having RR genetic make-up in F 2 generation is,
(A) 25% (B) 50%
(C) 30% (D) 75%
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XII. Answer the following questions : 3×1=3
29. “Though ozone is a deadly poison, it is essential for life on the
earth.” Justify this statement.
30. Schematic representation of blood circulation in the mammals is
given below :
i) Name the blood vessels ‘x’ and ‘y’.
ii) Which blood vessel has valves ?
31. “The number of organisms decreases by reaching higher trophic
level of a food chain in an ecosystem.” Why ?
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XIII. Answer the following questions : 2×2=4
32. Draw the diagram showing the germination of pollen on stigma
and label ‘pollen tube’.
33. Draw the diagram showing excretory system in human beings
and label ‘urinary bladder’.
XIV. Answer the following questions : 3×3=9
34. a) Measures of recharging underground water are better than
the storage of water on the surface levels of the ground.
How ? Explain.
b) Reuse is better than recycling. Why ?
35. a) “In human reproduction, the placenta performs a
significant role in the development of a foetus into a child.”
Justify this statement.
b) How can DNA copying be decided as one of the ways of
reproduction in lower organisms ?
36. What product is formed in the first step that takes place in the
cytoplasm during the respiration in animals ? Write any two
differences between aerobic and anaerobic respiration.
OR
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a) In what form are the waste products stored in old xylems
of plants ?
b) How do the products of photosynthesis transport to all
parts of the plant ?
XV. Answer the following question : 1×4=4
37. a) Which part of the human brain controls the following
activities ?
i) Involuntary activities
ii) Thinking process
iii) Posture and balance of the body.
b) What are phytohormones ? Name three phytohormones
that promote growth.
OR
a) Name the hormones that control the following activities in
man :
i) Regulating sugar level in the blood
ii) Regulating the menstrual cycle
iii) Preparing the body to face situation
iv) Regulating the metabolism.
b) Name any two tropisms that occur in plants. Give an
example for each.
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XVI. Answer the following question : 1×5=5
38. a) Human hands and wings of the bird help to trace the
evolutionary relationships. How ? Explain the methods of
dating of fossils.
b) Changes in the non-reproductive tissues will not inherit.
Why ?
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Question Paper Serial No.
A
CÈÉí¨Ü PÜñܤÄÔ
Joár ÊÜáá©ÅñÜ ±ÜâoWÜÙÜ ÓÜíTæÂ : 16 ]
Total No. of Printed Pages : 16 ]
Joár ±ÜÅÍæ°WÜÙÜ ÓÜíTæÂ : 38 ] CCE RF/PF/RR/
Total No. of Questions : 38 ] PR/NSR/NSPR
ÓÜíPæàñÜ ÓÜíTæÂ : 83-K FULL SYLLABUS
Code No. : 83-K
ËÐÜ¿á : ËþÝ®Ü
Subject : SCIENCE
»èñÜ ËþÝ®Ü, ÃÜÓÝ¿á®Ü ËþÝ®Ü ÊÜáñÜᤠiàÊÜ ËþÝ®Ü / Physics, Chemistry & Biology
TEAR HERE TO OPEN THE QUESTION PAPER
PܮܰvÜ ÊÜÞ«ÜÂÊÜá / Kannada Medium
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30. 03. 2024
Regular Fresh / Private Fresh / Regular Repeater / Private Repeater / NSR / NSPR
©®ÝíPÜ 30. 03. 2024 ] [ Date : 30. 03. 2024
ÓÜÊÜá¿á ¸æÙÜWæY 10-15 Äí¨Ü ÊÜá«ÝÂÖܰ 1-30 ÃÜÊÜÃæWæ ] [ Time : 10-15 A.M. to 1-30 P.M.
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»ÝWÜ & A
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±Üä|ì EñܤÃÜÊÜ®Üá° ŸÃæÀáÄ 3×1=3
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II. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ EñܤÄÔ 2×1=2
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6. ¹Ú ¸æÙÜQ®Ü Ãæãà×ñÜ Gí¨ÜÃæà®Üá ¸æÙÜQ®Ü ÊÜQÅà»ÜÊܮܩí¨Ü ÊÝ¿ááÊÜáívÜÆ¨ÜÈÉ
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8. PæãqrÃÜáÊÜ bñÜŨÜÈÉ ÊÜÂPܤ±ÜwÔ¨Üíñæ ¨ÜêÑr¨æãàÐÜÊÜ®Üá° Öæãí©ÃÜáÊÜ ÊÜÂQ¤¿áá
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ÊÜÂQ¤¿á ¨ÜêÑr¨æãàÐÜ ±ÜÄÖÝÃÜPæR D ÊÜáÓÜãÃÜÊÜâ ÓÜãPÜ¤Êæà ËÍæÉàÑÔ.
IV. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ EñܤÄÔ 3×3=9
9. ²à®Ü ÊÜáÓÜãÃÜ¨Ü ÊÜááí¨æ 2 F 1 ®ÜÈÉ ÊÜÓÜá¤ÊÜ®Üá° CÄÔ¨ÝWÜ EípÝWÜáÊÜ ±ÜÅ£¹íŸ¨Ü
ÃæàTÝbñÜÅÊܬÜá® ŸÃæÀáÄ. ÃæàTÝbñÜÅ¨Ü ÓÜÖÝ¿á©í¨Ü ¯ÜÅ£¹íŸ¨Ü Óݧ¬Ü ÊÜáñÜá¤
ÓÜÌ»ÝÊÜWÜÙÜ®Üá° £ÚÔ.
[ F 1 ÊÜáÓÜãÃÜ¨Ü ±ÜÅ«Ý®Ü ÓÜíWÜÊÜá ]
10. 8 Ãæãà«Ü©í¨Ü ±ÜÅ£ ÓæPæíwWæ 200 J EÐÜ¡ÍÜQ¤ Eñܳ£¤¿ÞWÜᣤ¨æ. Ãæãà«ÜPܨÜ
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A¥ÜÊÝ
300 W ¨ÜÃÜ¨Ü ÃæµÅgÃæàoÃ… ©¬ÜPæR 6 WÜípæWÜÙÜ PÝÆ ŸÙÜPæ¿ÞWÜáñܤ¨æ. 1 kWh Wæ
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11. WÜêÖÜ ŸÙÜPæ¿á ˨ÜáÂñ…ÊÜáívÜÆWÜÙÜÈÉ,
i) KÊÜÃ…Çæãàv… EípÝWÜÆá PÝÃÜ|WÜÙæà¬Üá
ii) »Üã ÓÜí±ÜPÜì ñÜí£¿á PÝ¿áìÊÜ®Üá° ËÊÜÄÔ.
A¥ÜÊÝ
AÊÝÖÜPÜ Öæã©Pæ CÃÜáÊÜ Jí¨Üá ñÝÊÜáÅ¨Ü ñÜí£¿á ÓÜáÃÜáÚ¿á®Üá°
WÝÂÆÌ®æãàËáàoÃ…Wæ ÓÜí±ÜQìÓÜÇÝX¨æ. Jí¨Üá ¨ÜívÜPÝíñÜÊÜ®Üá°
i) ÓÜáÃÜáÚ¿á JÙÜWæ ñÜÚÛ¨ÝWÜ
ii) ÓÜáÃÜáÚ¿á JÙÜX¯í¨Ü ×íñæWæ¨ÜáPæãívÝWÜ
iii) ÓÜáÃÜáÚ¿á JÙÜWæ ¯ÍÜcÆÊÝXÄÔ¨ÝWÜ H®ÝWÜáñܤ¨æ
V. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ EñܤÄÔ 2×4=8
12. a) ŸÆWæç Öæ¸æºÃÜÙÜ ¿áÊÜáÊܬÜá® ÃÜã°Ô. PÝí£à¿á ŸÆÃæàTæWÜÙÜ
¿ÞÊÜâ¨Ý¨ÜÃÜã GÃÜvÜá ÆûÜ|WÜÙܬÜá® ŸÃæÀáÄ.
b) ÓæãÇæ¬Ý¿å…x Gí¨ÜÃæà¬Üá C¨Ü®Üá° Jí¨Üá ˨ÜáÂñ…PÝíñÜÊÝX ÖæàWæ
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13. a) ¸æÙÜQ®Ü ±ÜÅ£¶ÜÆ®Ü¨Ü GÃÜvÜá ¯¿áÊÜáWÜÙÜ®Üá° ¯ÃÜã²Ô.
b) ²à®Ü¨Ü±Üì| ÊÜáñÜᤠ¯ÊÜᰨܱÜì|WÜÙÜ ®ÜvÜáÊÜ| ¿ÞÊÜâ¨Ý¨ÜÃÜã GÃÜvÜá
ÊÜÂñÝÂÓÜWÜÙÜ®Üá° £ÚÔ.
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»ÝWÜ & B
ÃÜÓÝ¿á®Ü ËþÝ®Ü
VI. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ A¥ÜÊÝ A±Üä|ì ÖæàÚPæWÜÚWæ ®ÝÆáR ±Ü¿Þì¿á EñܤÃÜWÜÙÜ®Üá°
¯àvÜÇÝX¨æ. AÊÜâWÜÙÜÈÉ ÓÜãPܤÊÝ¨Ü Jí¨Üá EñܤÃÜÊÜ®Üá° BÄÔ, A¨ÜÃÜ PÜÅÊÜÞûÜÃܨæãvÜ®æ
±Üä|ì EñܤÃÜÊÜ®Üá° ŸÃæÀáÄ 3×1=3
14. PݸÝìQÕÈP… BÊÜáÉ ÊÜáñÜᤠBÇæãRàÖÝÇ…WÜÙÜ ¬ÜvÜáË¬Ü ÊÜñÜì¬æÀáí¨Ü EípÝWÜáÊÜ
ÓÝÊÜ¿áÊÜ ÓÜí¿ááPܤWÜÙæí¨ÜÃæ,
(A) BÈxÖæçv…WÜÙÜá
(B) QàpæãଅWÜÙÜá
(C) GÓÜrÃ…WÜÙÜá
(D) ÖæçvæãÅàPݟ쬅WÜÙÜá
15. ¶æÃÜÓ… ÓÜÇæ#àp… ÖÜÃÜÙÜáWÜÙܬÜá® PÝÔ¨ÝWÜ ÖÜÔÃÜá Ÿ|¡ÊܬÜá® PÜÙæ¨ÜáPæãÙÜáÛñܤ Êæ,
HPæí¨ÜÃæ D ÓÜí¿ááPܤÊÜâ
(A) ÓÜÃÜÙÜ Eñܳ®Ü°WÜÙÝX Ë»Üg®æ Öæãí¨ÜáÊÜâ¨Üá
(B) ¯àÄ®Ü A|áWÜÙÜ®Üá° PÜÙæ¨ÜáPæãÙÜáÛÊÜâ¨Üá
(C) ÓÜÆ#Ã… væçBPæÕ„v… A¯ÆÊÜ®Üá° ¹vÜáWÜvæ ÊÜÞvÜáÊÜâ¨Üá
(D) PÜí¨Üá Ÿ|¡¨Ü «ÜãÊÜáÊܬÜá® Eñܱ£¤ ÊÜÞvÜáÊÜâ¨Üá
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16. ÊæáívÜÈàÊ…ÃÜÊÜÃÜ BÊÜñÜìPÜ PæãàÐÜrPÜ¨Ü Jí¨Üá Ëá£Ááí¨ÜÃæ, D ÊÜXàìPÜÃÜ|ÊÜâ
(A) PæàÊÜÆ PÝÂÈÕ¿áíÊÜÃæWæ ÊÜÞñÜÅ A®ÜÌÀáÓÜáñܤ¨æ
(B) ÖÜWÜáÃÜÊÝ¨Ü «ÝñÜáWÜÚWæ ÊÜÞñÜÅ ÓÜÄÖæãí¨Üáñܤ¨æ
(C) gvÜ A¯ÆWÜÚWæ ¯©ìÐÜr Óݧ®Ü J¨ÜXÓÜÈÆÉ
(D) ÖæçvæãÅàg¬…Wæ Ô§ÃÜÊÝ¨Ü Óݧ¬ÜÊܬÜá® ÁãàiÓÜÆá ÓÝ«ÜÂÊÝWÜÈÆÉ
VII. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ EñܤÄÔ 3×1=3
17. ÊÝÑíW… ÓæãàvÝ¨Ü ¿ÞÊÜâ¨Ý¨ÜÃÜã GÃÜvÜá E¯ÜÁãàWÜWÜÙܬÜá® ŸÃæÀáÄ.
18. B«Üá¯PÜ BÊÜñÜìPÜ PæãàÐÜrPܨÜÈÉ BÊÜñÜì WÜÙÜá ÊÜáñÜᤠWÜáí±Üâ WÜÙÜá Gí¨ÜÃæà®Üá
19. PæÙÜX¬Ü PæãàÐÜrPܨÜÈÉ àvÜÇÝXÃÜáÊÜ ¬ÝÆáR «ÝñÜáWÜÙÜ CÇæPÝó¬… Ë¬ÝÂÓÜWÜÙܬÜá®
WÜÊÜá¯Ô ÊÜáñÜᤠPæÙÜWæ PæãqrÃÜáÊÜ ±ÜÅÍæ°Wæ EñܤÄÔ
«ÝñÜáWÜÙÜá CÇæPÝó®… Ë®ÝÂÓÜ
e 2, 8, 2
f 2, 7
g 2, 8, 8, 1
h 2, 8, 7
D «ÝñÜáWÜÙÜ®Üá° AÊÜâWÜÙÜ ±ÜÃÜÊÜÞ|á £ÅgÂWÜÙÜ ±ÜÃÜÊÜÞ|á WÝñÜÅ CÚPæ PÜÅÊÜá¨ÜÈÉ
hæãàwÔ.
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VIII. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ EñܤÄÔ 3×2=6
20. ÓÝÃÜÄPܤ ÓÜÆã#éÄP… BÊÜáɨæãí©Wæ ÓÜñÜáË¬Ü aÜãÃÜáWÜÙÜ ÊÜñÜì¬æ ÊÜáñÜá¤
EÄÓÜáËPæ¿á ÊÜáãÆPÜ ÖæçvæãÅàg¬… AÆ¨Ü ¯ÜÄàûæ ÊÜÞvÜáÊÜ E¯ÜPÜÃÜ|WÜÙÜ
hæãàvÜOæ¿á bñÜÅ ŸÃæÀáÄ.
21. HPÜPÝÆ¨ÜÈÉ Pæí¯Üâ ÊÜáñÜᤠàÈ Èo¾Ó… PÝWܨÜWÜÙܬÜá® ¸æù¬… ¨ÝÅÊÜ| ÊÜáñÜᤠB
¨ÝÅÊÜ|ÊÜ®Üᰠ˨Üá©̻Üg®æWæ JÙܱÜwÔ ±Üvæ¨Ü gÈà¿á Eñܳ®Ü°¨ÜÈÉ A¨ÜªÇÝX¨æ.
Èo¾Ó… PÝWܨÜWÜÙÜÈÉ àÊÜâ WÜÊÜáÓÜáÊÜ Ÿ¨ÜÇÝÊÜOæWÜÙæà¬Üá ¯ÊÜá¾ EñܤÃÜÊÜ®Üá°
PÝÃÜ|WÜÙæãí©Wæ ±ÜâÑràPÜÄÔ.
A¥ÜÊÝ
PæãqrÃÜáÊÜ PæãàÐÜrPܨÜÈÉ ¯àvÜÇÝXÃÜáÊÜ ®ÝÆáR ¨ÝÅÊÜ|WÜÙÜ pH ÊÜåèÆÂWÜÙÜ®Üá°
WÜÊÜá¯Ô ÊÜáñÜᤠPæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ EñܤÄÔ
¨ÝÅÊÜ|WÜÙÜá P Q R S
pH ÊÜåèÆÂ 10·0 13·7 7·0 1·2
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ii) ¿ÞÊÜ GÃÜvÜá ¨ÝÅÊÜ|WÜÙܬÜá® ŸÙÜÔ ñÜoÓܧ ÆÊÜ|ÊܬÜá® ¯Üvæ¿áŸÖÜá¨Üá
HPæ
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22. ñÝÊÜáÅ¨Ü Ë¨Üá©̻Ügà¿á ÍÜᩜàPÜÃÜ|ÊܬÜá® ñæãàÄÓÜáÊÜ E¯ÜPÜÃÜ|WÜÙÜ
hæãàvÜOæ¿á bñÜÅÊܬÜá® ŸÃæ¨Üá, BËáÉàPÜÄst ñÝÊÜáÅ¨Ü ÓÜÇæ#àp… ¨ÝÅÊÜ|ÊÜ®Üá°
WÜáÃÜá£Ô.
IX. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ EñܤÄÔ 3×3=9
23. a) PæÙÜX®Ü ÃÝÓÝ¿á¯PÜ QÅÁá¿áÈÉ EñÜRÐÜì| ÊÜáñÜᤠA±ÜPÜÐÜì|WæãíwÃÜáÊÜ
ÊÜÓÜá¤WÜÙÜ®Üá° WÜáÃÜá£Ô
ZnO + C → Zn + CO
b) PÜÊÜáoáËPæ Gí¨ÜÃæà®Üá C¨Ü®Üá° ñÜvæWÜoárÊÜ ¿ÞÊÜâ¨Ý¨ÜÃÜã GÃÜvÜá
˫ݮÜWÜÙÜ®Üá° £ÚÔ.
24. A¯Ü¿Þì¯Ü¤ Pݟ쬅 ÓÜí¿ááPܤÊܬÜá® ¯Ü¿Þì¯Ü¤ Pݟ쬅 ÓÜí¿ááPܤÊܬݮX
±ÜÄÊÜ£ìÓÜáÊÜ ÃÝÓÝ¿á¯PÜ QÅÁá¿á®Üá° PæÙÜWæ ¯àwÃÜáÊÜ A±Üä|ì ÓÜËáàPÜÃÜ|ÊÜâ
¯ÜÅ£˜ÓÜáñܤ¨æ
i) ÓÜËáàPÜÃÜ| ±Üä£ìWæãÚÔ.
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ii) A¯Æ x ÊÜáñÜᤠy ÊÜÓÜá¤ÊÜ®Üá° ÖæÓÜÄÔ.
iii) D QÅÁá¿á Aí£ÊÜá Eñܱ¬Ü®ÊÜâ ÓÜã¿áì¬Ü ¸æÙÜQ¬ÜÈÉ PæãÉàĬ…¬æãí©Wæ
ÊÜ£ìÔ¨ÝWÜ H®ÝWÜáñܤ¨æ
25. a) Pݟ쬅 ¯ÜÃÜÊÜÞ|áÊÜâ C 4 A¥ÜÊÝ C 4 A¿Þ®ÜáWÜÙÜ®Üá° Eíoá
ÊÜÞvÜÆá ÓÝ«ÜÂËÆÉ. HPæ
b) Ëáà¥æà¬…¬Ü CÇæPÝó¬… aÜáQR ÃÜaܬæ¿á¬Üá® ŸÃæÀáÄ.
A¥ÜÊÝ
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b) ¯àÄ®Ü WÜvÜÓÜáñÜ®ÜPæR PÝÃÜ|ÊÝ¨Ü ÆÊÜ|WÜÙÜá ¿ÞÊÜâÊÜâ ÊÜÞgìPÜWÜÙÜá
WÜvÜÓÜá ¯àÄ®ÜÈÉ¿áã ±ÜÄOÝÊÜáPÝÄ HPæ
X. PæÙÜX®Ü ±ÜÅÍæ°Wæ EñܤÄÔ 1×4=4
26. a) ¸æÚÛ ÊÜáñÜᤠñÝÊÜáÅ¨Ü ÊÜÓÜá¤WÜÙÜá AÊÜâWÜÙÜ ÊæáàÇæ¾„ ÖæãÙܯܬÜá® ÖæàWæ
PÜÙæ¨ÜáPæãÙÜáÛñÜ¤Êæ WÝÂÆÌ¯àPÜÃÜ|ÊÜâ Pܹº|¨Ü ÊÜÓÜá¤WÜÙÜ®Üá° ÖæàWæ
ÓÜíÃÜüÓÜáñܤ¨æ
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»ÝWÜ & C
( iàÊÜ ËþÝ®Ü )
XI. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ A¥ÜÊÝ A±Üä|ì ÖæàÚPæWÜÚWæ ®ÝÆáR ±Ü¿Þì¿á EñܤÃÜWÜÙÜ®Üá°
¯àvÜÇÝX¨æ. AÊÜâWÜÙÜÈÉ ÓÜãPܤÊÝ¨Ü Jí¨Üá EñܤÃÜÊÜ®Üá° BÄÔ, A¨ÜÃÜ PÜÅÊÜÞûÜÃܨæãvÜ®æ
±Üä|ì EñܤÃÜÊÜ®Üá° ŸÃæÀáÄ 2×1=2
27. PæÙÜX®ÜÊÜâWÜÙÜÈÉ ±ÜÃÝÊÜñÜì®æ QÅÁáWæ Jí¨Üá ¯¨ÜÍÜì®Ü,
(A) PÜábì¿á®Üá° gÃÜáXÓÜáÊÜâ¨Üá
(B) ÃÜáb¿á®Üá° A®Üá»ÜËÓÜáÊÜâ¨Üá
(C) PÝ¨Ü ñÜÊÜÊÜ®Üá° £Ú¿á¨æà ÊÜááqr¨ÝWÜ Pæç¿á®Üá° ×í¨ÜPæR GÙæ¨ÜáPæãÙÜáÛÊÜâ¨Üá
(D) PÝ¿áìPÜÅÊÜá¨Ü Pæã®æ¿áÈÉ aÜ±Ý³Ùæ ñÜoárÊÜâ¨Üá
28. ¨ÜáívÜ®æ¿á ¹àgWÜÙÜáÙÜÛ ŸpÝ~ ÓÜÓÜÂWÜÙܬÜá® ( RR ), ÓÜáPÝR¨Ü ¹àgWÜÙÜáÙÜÛ ŸpÝ~
ÓÜÓܨæãí©Wæ ( rr ) ÓÜíPÜÃÜ|WæãÚÓÜÇÝX¨æ. F 2 ñÜÚ²àÚWæ¿áÈÉ RR ñÜÚWÜá|ÊÜ®Üá°
Öæãí©ÃÜáÊÜ ÓÜÓÜÂWÜÙÜ ÍæàPÜvÝ ±ÜÅÊÜÞ|
(A) 25% (B) 50%
(C) 30% (D) 75%
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XII. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ EñܤÄÔ 3×1=3
29. KÃækãଅ Jí¨Üá ÊÜÞÃÜOÝí£PÜ ËÐÜÊÝX¨ÜªÃÜã »ÜãËá¿á ÊæáàÈ¬Ü iàËWÜÚWæ
C¨Üá AWÜñÜÂÊÝX¨æ. D ÖæàÚPæ¿á®Üá° ÓÜÊÜá¦ìÔ.
30. Óܤ¯WÜÙÜÈÉ ÃÜPܤ±ÜÄaÜÆ®æ¿á ÃæàTÝñܾPÜ ¯ÃÜã±ÜOæ¿á®Üá° PæÙÜWæ ¯àw¨æ
i) ÃÜPܤ®ÝÙÜ x ÊÜáñÜᤠy WÜÙÜ®Üá° ÖæÓÜÄÔ.
ii) ¿ÞÊÜ ÃÜPܤ®ÝÙÜ PÜÊÝoÊÜ®Üá° Öæãí©ÃÜáñܤ¨æ
31. ±ÜÄÓÜÃÜ ÊÜÂÊÜÓæ§¿áÈÉ BÖÝÃÜ ÓÜÃܱÜÚ¿á E®Ü°ñÜ ÓܤÃÜPæR ñÜÆá²¨Üíñæ iàËWÜÙÜ ÓÜíTæÂ
PÜwÊæá¿ÞWÜáñܤ¨æ. HPæ
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XIII. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ EñܤÄÔ 2×2=4
32. ÍÜÇÝPÝWÜÅ¨Ü ÊæáàÇæ ±ÜÃÝWÜ¨Ü ÊæãÙæ¿ááËPæ¿á®Üá° ñæãàÄÓÜáÊÜ bñÜÅÊܬÜá® ŸÃæÀáÄ
ÊÜáñÜᤠ±ÜÃÝWÜ ®ÜÚPæ ¿á®Üá° WÜáÃÜá£Ô.
33. ÊÜÞ¬ÜÊÜ¬Ü ËÓÜgì¬ÝíWÜ ÊÜäÂÖÜÊܬÜá® ñæãàÄÓÜáÊÜ bñÜÅÊܬÜá® ŸÃæÀáÄ ÊÜáñÜá¤
ÊÜáãñÜÅPæãàÍÜ ÊÜ®Üá° WÜáÃÜá£Ô.
XIV. PæÙÜX®Ü ±ÜÅÍæ°WÜÚWæ EñܤÄÔ 3×3=9
34. a) ®æÆÊÜáor©í¨Ü ÊæáàÇæ ¯àÃÜ®Üá° ÓÜíWÜÅ×ÓÜáÊÜâ¨ÜQRíñÜÆã ®æÆ¨æãÙÜX®Ü ¯àÃÜ®Üá°
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b) ÊÜáÃÜáaÜQÅàPÜÃÜ|QRíñÜ ÊÜáÃÜáŸÙÜPæ EñܤÊÜá. HPæ
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EípÝWÜáÊÜ Eñܳ®Ü° ¿ÞÊÜâ¨Üá ÊÝ¿ááËPÜ ÊÜáñÜᤠAÊÝ¿ááËPÜ EÔÃÝoWÜÙÜ
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a) ÓÜÓÜÂWÜÙÜ ÖÜÙæ¿á PæÕ„ÆíWÜÙÜÈÉ ñÝÂg ¯Ü¨Ý¥ÜìWÜÙÜá ¿ÞÊÜ ÃÜã¯Ü¨ÜÈÉ
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b) ÓÜÓÜÂWÜÙÜÈÉ EípÝWÜáÊÜ ¿ÞÊÜâ¨Ý¨ÜÃÜã GÃÜvÜá A®ÜáÊÜñÜì®æWÜÙÜ®Üá° ÖæÓÜÄÔ.
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30. 03. 2024 14 of 16
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CCE RF/PF/RR/PR/NSR/NSPR(A)/666/017 83-K
XVI. PæÙÜX®Ü ±ÜÅÍæ°Wæ EñܤÄÔ 1×5=5
38. a) ÊÜÞ¬ÜÊÜ¬Ü PæçWÜÙÜá ÊÜáñÜᤠ¯Üü¿á ÃæPæRWÜÙÜá iàÊÜËPÝÔà¿á ÓÜíŸí«ÜWÜÙܬÜá®
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HPæ
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CCE RF/PF/RR/PR/NSR/NSPR(A)/666/017 83-K
30. 03. 2024 16 of 16
Page 34
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