Class 10 Exam > Class 10 Notes > Science Class 10 > Class 10 Science Answer Sheet for 2023 ( SET-2)
Class 10 Science Answer Sheet for 2023 ( SET-2) | Science Class 10 PDF Download
| Download, print and study this document offline |
Please wait while the PDF view is loading
Page 1
MARKING SCHEME
Secondary School Examination 2023
SCIENCE (Subject Code–086)
[ Paper Code:31/1/2]
Maximum Marks: 80
Q.
No.
EXPECTED ANSWER / VALUE POINTS
Marks Total
Marks
SECTION—A
1 1
1. (c) 1 1
2.
(c)
1 1
3.
(d)
1 1
4. (b) 1 1
5. (c) 1 1
6. (a) 1 1
7.
(b)
1 1
8.
(b)
1 1
9. (d) 1 1
10. (a) 1 1
11. (d) 1 1
12.
(d)
1 1
13.
(c)
1 1
14. (b) 1 1
15. (a) 1 1
16. (d) 1 1
17.
(a)
1 1
18.
(d)
1 1
19. (c) 1 1
20.
(a)
1 1
SECTION B
Page 2
MARKING SCHEME
Secondary School Examination 2023
SCIENCE (Subject Code–086)
[ Paper Code:31/1/2]
Maximum Marks: 80
Q.
No.
EXPECTED ANSWER / VALUE POINTS
Marks Total
Marks
SECTION—A
1 1
1. (c) 1 1
2.
(c)
1 1
3.
(d)
1 1
4. (b) 1 1
5. (c) 1 1
6. (a) 1 1
7.
(b)
1 1
8.
(b)
1 1
9. (d) 1 1
10. (a) 1 1
11. (d) 1 1
12.
(d)
1 1
13.
(c)
1 1
14. (b) 1 1
15. (a) 1 1
16. (d) 1 1
17.
(a)
1 1
18.
(d)
1 1
19. (c) 1 1
20.
(a)
1 1
SECTION B
21. • They help in the breakdown of organic matter/ dead and decaying
matter into simple inorganic raw materials.
• Help in natural replenishment of nutrient in soil.
• Help in keeping the environment clean. (Any two)
1,1
2
22. (a)
• Dispersion of white light
• Cause: Different colours of light bend through different angles
w.r.t. the incident ray. / Different colours have different
wavelengths.
OR
(b) (i) It is due to gradual weakening of the ciliary muscles and
diminishing flexibility of the eye lens.
(ii) Presbyopia/ Presbyopia + Myopia
(iii) Bifocal /Concave + Convex lens/ Diagram
1
½
½
½, ½
½
½
2
23.
• Kidneys
• Structure: A cluster of thin-walled capillaries (glomerulus)
associated with cup-shaped end of a tube called
Bowman’s capsule. This further extends into a
tubular part which ends in collective ducts. /
½
1
Page 3
MARKING SCHEME
Secondary School Examination 2023
SCIENCE (Subject Code–086)
[ Paper Code:31/1/2]
Maximum Marks: 80
Q.
No.
EXPECTED ANSWER / VALUE POINTS
Marks Total
Marks
SECTION—A
1 1
1. (c) 1 1
2.
(c)
1 1
3.
(d)
1 1
4. (b) 1 1
5. (c) 1 1
6. (a) 1 1
7.
(b)
1 1
8.
(b)
1 1
9. (d) 1 1
10. (a) 1 1
11. (d) 1 1
12.
(d)
1 1
13.
(c)
1 1
14. (b) 1 1
15. (a) 1 1
16. (d) 1 1
17.
(a)
1 1
18.
(d)
1 1
19. (c) 1 1
20.
(a)
1 1
SECTION B
21. • They help in the breakdown of organic matter/ dead and decaying
matter into simple inorganic raw materials.
• Help in natural replenishment of nutrient in soil.
• Help in keeping the environment clean. (Any two)
1,1
2
22. (a)
• Dispersion of white light
• Cause: Different colours of light bend through different angles
w.r.t. the incident ray. / Different colours have different
wavelengths.
OR
(b) (i) It is due to gradual weakening of the ciliary muscles and
diminishing flexibility of the eye lens.
(ii) Presbyopia/ Presbyopia + Myopia
(iii) Bifocal /Concave + Convex lens/ Diagram
1
½
½
½, ½
½
½
2
23.
• Kidneys
• Structure: A cluster of thin-walled capillaries (glomerulus)
associated with cup-shaped end of a tube called
Bowman’s capsule. This further extends into a
tubular part which ends in collective ducts. /
½
1
• Function:
Filtration of nitrogenous waste from blood to form urine. /
Reabsorption of useful materials from the filtrate. /
Osmoregulation (Any one function)
½
2
24. Fruit is acidic in nature because acid turns blue litmus red. 1,1 2
25.
•
Or explaind in the form of paragraph.
2
2
26.
(a) (i) X: Plaster of Paris/Calcium sulphate hemihydrate.
• CaSO
4
.
2
1
H
2
O
(ii) • Baking Soda – NaHCO
3
/Sodium hydrogen carbonate/
Sodium bicarbonate
•Baking Powder – A mixture of NaHCO
3 /Baking soda +
Tartaric acid/any mild edible acid
OR
(b) (i) CuSO
4
. 5H
2
O ? ? ? ? ?
heat
CuSO
4
+ 5H
2
O
(ii) 2NaHCO
3
? ? ? ? ?
heat
Na
2
CO
3
+ H
2
O + CO
2
½
½
½
½
1
1
2
Page 4
MARKING SCHEME
Secondary School Examination 2023
SCIENCE (Subject Code–086)
[ Paper Code:31/1/2]
Maximum Marks: 80
Q.
No.
EXPECTED ANSWER / VALUE POINTS
Marks Total
Marks
SECTION—A
1 1
1. (c) 1 1
2.
(c)
1 1
3.
(d)
1 1
4. (b) 1 1
5. (c) 1 1
6. (a) 1 1
7.
(b)
1 1
8.
(b)
1 1
9. (d) 1 1
10. (a) 1 1
11. (d) 1 1
12.
(d)
1 1
13.
(c)
1 1
14. (b) 1 1
15. (a) 1 1
16. (d) 1 1
17.
(a)
1 1
18.
(d)
1 1
19. (c) 1 1
20.
(a)
1 1
SECTION B
21. • They help in the breakdown of organic matter/ dead and decaying
matter into simple inorganic raw materials.
• Help in natural replenishment of nutrient in soil.
• Help in keeping the environment clean. (Any two)
1,1
2
22. (a)
• Dispersion of white light
• Cause: Different colours of light bend through different angles
w.r.t. the incident ray. / Different colours have different
wavelengths.
OR
(b) (i) It is due to gradual weakening of the ciliary muscles and
diminishing flexibility of the eye lens.
(ii) Presbyopia/ Presbyopia + Myopia
(iii) Bifocal /Concave + Convex lens/ Diagram
1
½
½
½, ½
½
½
2
23.
• Kidneys
• Structure: A cluster of thin-walled capillaries (glomerulus)
associated with cup-shaped end of a tube called
Bowman’s capsule. This further extends into a
tubular part which ends in collective ducts. /
½
1
• Function:
Filtration of nitrogenous waste from blood to form urine. /
Reabsorption of useful materials from the filtrate. /
Osmoregulation (Any one function)
½
2
24. Fruit is acidic in nature because acid turns blue litmus red. 1,1 2
25.
•
Or explaind in the form of paragraph.
2
2
26.
(a) (i) X: Plaster of Paris/Calcium sulphate hemihydrate.
• CaSO
4
.
2
1
H
2
O
(ii) • Baking Soda – NaHCO
3
/Sodium hydrogen carbonate/
Sodium bicarbonate
•Baking Powder – A mixture of NaHCO
3 /Baking soda +
Tartaric acid/any mild edible acid
OR
(b) (i) CuSO
4
. 5H
2
O ? ? ? ? ?
heat
CuSO
4
+ 5H
2
O
(ii) 2NaHCO
3
? ? ? ? ?
heat
Na
2
CO
3
+ H
2
O + CO
2
½
½
½
½
1
1
2
SECTION C
27.
(a) (i) Kitchen Garden ? A man made ecosystem / non-sustainable
Forest ? Ecosystem maintained by nature / self-sustainable
(ii)In a jar containing water we can provide oxygen through a pump
and add a few aquatic plants and animals to make it a self-
sustaining system.
Justification –
• Oxygen is replenished continuously.
• Aquatic plants serve as food.
(or any other example)
OR
(b) (i) Plants ? ? ? Rats ? ? ? Snakes ? ? ? Hawks
(ii) Energy available at second trophic level = 20,000 J
Energy transferred from second to third trophic level = 2000 J
Energy transferred from third to fourth trophic level = 200 J
1
1
1
1
1
1
3
28. (a) (i) Flemings left-hand rule:
Stretch the forefinger, the central finger and the thumb of your
left hand in mutually perpendicular directions. If the
forefinger shows the direction of the magnetic field and the
central finger that of the current, then the thumb will point
towards the direction of motion of the conductor or direction
of force /
(ii) (1) Force on electron is maximum in Fig (i) because the direction
of motion of electron/current is at right angle/perpendicular to
that of magnetic field.
(2) Force on electron is minimum in Fig (iii) because the electron
is moving along / parallel to the direction of magnetic field
OR
(b) (i) (1)
1
½, ½
½, ½
Page 5
MARKING SCHEME
Secondary School Examination 2023
SCIENCE (Subject Code–086)
[ Paper Code:31/1/2]
Maximum Marks: 80
Q.
No.
EXPECTED ANSWER / VALUE POINTS
Marks Total
Marks
SECTION—A
1 1
1. (c) 1 1
2.
(c)
1 1
3.
(d)
1 1
4. (b) 1 1
5. (c) 1 1
6. (a) 1 1
7.
(b)
1 1
8.
(b)
1 1
9. (d) 1 1
10. (a) 1 1
11. (d) 1 1
12.
(d)
1 1
13.
(c)
1 1
14. (b) 1 1
15. (a) 1 1
16. (d) 1 1
17.
(a)
1 1
18.
(d)
1 1
19. (c) 1 1
20.
(a)
1 1
SECTION B
21. • They help in the breakdown of organic matter/ dead and decaying
matter into simple inorganic raw materials.
• Help in natural replenishment of nutrient in soil.
• Help in keeping the environment clean. (Any two)
1,1
2
22. (a)
• Dispersion of white light
• Cause: Different colours of light bend through different angles
w.r.t. the incident ray. / Different colours have different
wavelengths.
OR
(b) (i) It is due to gradual weakening of the ciliary muscles and
diminishing flexibility of the eye lens.
(ii) Presbyopia/ Presbyopia + Myopia
(iii) Bifocal /Concave + Convex lens/ Diagram
1
½
½
½, ½
½
½
2
23.
• Kidneys
• Structure: A cluster of thin-walled capillaries (glomerulus)
associated with cup-shaped end of a tube called
Bowman’s capsule. This further extends into a
tubular part which ends in collective ducts. /
½
1
• Function:
Filtration of nitrogenous waste from blood to form urine. /
Reabsorption of useful materials from the filtrate. /
Osmoregulation (Any one function)
½
2
24. Fruit is acidic in nature because acid turns blue litmus red. 1,1 2
25.
•
Or explaind in the form of paragraph.
2
2
26.
(a) (i) X: Plaster of Paris/Calcium sulphate hemihydrate.
• CaSO
4
.
2
1
H
2
O
(ii) • Baking Soda – NaHCO
3
/Sodium hydrogen carbonate/
Sodium bicarbonate
•Baking Powder – A mixture of NaHCO
3 /Baking soda +
Tartaric acid/any mild edible acid
OR
(b) (i) CuSO
4
. 5H
2
O ? ? ? ? ?
heat
CuSO
4
+ 5H
2
O
(ii) 2NaHCO
3
? ? ? ? ?
heat
Na
2
CO
3
+ H
2
O + CO
2
½
½
½
½
1
1
2
SECTION C
27.
(a) (i) Kitchen Garden ? A man made ecosystem / non-sustainable
Forest ? Ecosystem maintained by nature / self-sustainable
(ii)In a jar containing water we can provide oxygen through a pump
and add a few aquatic plants and animals to make it a self-
sustaining system.
Justification –
• Oxygen is replenished continuously.
• Aquatic plants serve as food.
(or any other example)
OR
(b) (i) Plants ? ? ? Rats ? ? ? Snakes ? ? ? Hawks
(ii) Energy available at second trophic level = 20,000 J
Energy transferred from second to third trophic level = 2000 J
Energy transferred from third to fourth trophic level = 200 J
1
1
1
1
1
1
3
28. (a) (i) Flemings left-hand rule:
Stretch the forefinger, the central finger and the thumb of your
left hand in mutually perpendicular directions. If the
forefinger shows the direction of the magnetic field and the
central finger that of the current, then the thumb will point
towards the direction of motion of the conductor or direction
of force /
(ii) (1) Force on electron is maximum in Fig (i) because the direction
of motion of electron/current is at right angle/perpendicular to
that of magnetic field.
(2) Force on electron is minimum in Fig (iii) because the electron
is moving along / parallel to the direction of magnetic field
OR
(b) (i) (1)
1
½, ½
½, ½
Magnetic field lines of a current carrying solenoid
(2)
Magnetic field lines of a bar magnet
(ii)
Magnetic field of a solenoid Magnetic field of a bar magnet
1. The strength of the
magnetic field can be
changed by changing the
current.
1. The strength of the
magnetic field for a bar
magnet cannot be
changed.
2. The direction of magnetic
field can be reversed by
reversing the direction of
current.
2. The direction of magnetic
field for a bar magnet
cannot be changed.
3. It is a temporary magnetic
field.
3 It is a permanent magnetic
field.
(Any two)
1
1
½, ½
3
29.
•Defect : Myopia/Short sightedness
Two Causes :
• Excessive curvature of the eye lens
• Elongation of the eyeball
1
½
½
1
Read More
|
85 videos|437 docs|75 tests
|
About this Document
|
4.96/5 Rating |
|
Nov 22, 2024 Last updated |
Document Description: Class 10 Science Answer Sheet for 2023 ( SET-2) for Class 10 2024 is part of Science Class 10 preparation.
The notes and questions for Class 10 Science Answer Sheet for 2023 ( SET-2) have been prepared according to the Class 10 exam syllabus. Information about Class 10 Science Answer Sheet for 2023 ( SET-2) covers topics
like and Class 10 Science Answer Sheet for 2023 ( SET-2) Example, for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Class 10 Science Answer Sheet for 2023 ( SET-2).
Introduction of Class 10 Science Answer Sheet for 2023 ( SET-2) in English is available as part of our Science Class 10
for Class 10 & Class 10 Science Answer Sheet for 2023 ( SET-2) in Hindi for Science Class 10 course.
Download more important topics related with notes, lectures and mock test series for Class 10
Exam by signing up for free. Class 10: Class 10 Science Answer Sheet for 2023 ( SET-2) | Science Class 10
Description
Full syllabus notes, lecture & questions for Class 10 Science Answer Sheet for 2023 ( SET-2) | Science Class 10 - Class 10 | Plus excerises question with solution to help you revise complete syllabus for Science Class 10 | Best notes, free PDF download
Information about Class 10 Science Answer Sheet for 2023 ( SET-2)
In this doc you can find the meaning of Class 10 Science Answer Sheet for 2023 ( SET-2) defined & explained in the simplest way possible. Besides explaining types of
Class 10 Science Answer Sheet for 2023 ( SET-2) theory, EduRev gives you an ample number of questions to practice Class 10 Science Answer Sheet for 2023 ( SET-2) tests, examples and also practice Class 10
tests
|
Explore Courses for Class 10 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Class 10 Science Answer Sheet for 2023 ( SET-2) | Science Class 10
,practice quizzes
,Class 10 Science Answer Sheet for 2023 ( SET-2) | Science Class 10
,study material
,Class 10 Science Answer Sheet for 2023 ( SET-2) | Science Class 10
,Viva Questions
,Previous Year Questions with Solutions
,Free
,shortcuts and tricks
,past year papers
,Summary
,Semester Notes
,ppt
,Important questions
,Extra Questions
,MCQs
,Objective type Questions
,Sample Paper
,mock tests for examination
,Exam
,video lectures
;
Additional Information about Class 10 Science Answer Sheet for 2023 ( SET-2) for Class 10 Preparation
Class 10 Science Answer Sheet for 2023 ( SET-2) Free PDF Download
The Class 10 Science Answer Sheet for 2023 ( SET-2) is an invaluable resource that delves deep into the core of the Class 10 exam.
These study notes are curated by experts and cover all the essential topics and concepts, making your preparation more efficient and effective.
With the help of these notes, you can grasp complex subjects quickly, revise important points easily,
and reinforce your understanding of key concepts. The study notes are presented in a concise and easy-to-understand manner,
allowing you to optimize your learning process. Whether you're looking for best-recommended books, sample papers, study material,
or toppers' notes, this PDF has got you covered. Download the Class 10 Science Answer Sheet for 2023 ( SET-2) now and kickstart your journey towards success in the Class 10 exam.
Importance of Class 10 Science Answer Sheet for 2023 ( SET-2)
The importance of Class 10 Science Answer Sheet for 2023 ( SET-2) cannot be overstated, especially for Class 10 aspirants.
This document holds the key to success in the Class 10 exam.
It offers a detailed understanding of the concept, providing invaluable insights into the topic.
By knowing the concepts well in advance, students can plan their preparation effectively.
Utilize this indispensable guide for a well-rounded preparation and achieve your desired results.
Class 10 Science Answer Sheet for 2023 ( SET-2) Notes
Class 10 Science Answer Sheet for 2023 ( SET-2) Notes offer in-depth insights into the specific topic to help you master it with ease.
This comprehensive document covers all aspects related to Class 10 Science Answer Sheet for 2023 ( SET-2).
It includes detailed information about the exam syllabus, recommended books, and study materials for a well-rounded preparation.
Practice papers and question papers enable you to assess your progress effectively.
Additionally, the paper analysis provides valuable tips for tackling the exam strategically.
Access to Toppers' notes gives you an edge in understanding complex concepts.
Whether you're a beginner or aiming for advanced proficiency, Class 10 Science Answer Sheet for 2023 ( SET-2) Notes on EduRev are your ultimate resource for success.
Class 10 Science Answer Sheet for 2023 ( SET-2) Class 10 Questions
The "Class 10 Science Answer Sheet for 2023 ( SET-2) Class 10 Questions" guide is a valuable resource for all aspiring students preparing for the
Class 10 exam. It focuses on providing a wide range of practice questions to help students gauge
their understanding of the exam topics. These questions cover the entire syllabus, ensuring comprehensive preparation.
The guide includes previous years' question papers for students to familiarize themselves with the exam's format and difficulty level.
Additionally, it offers subject-specific question banks, allowing students to focus on weak areas and improve their performance.
Study Class 10 Science Answer Sheet for 2023 ( SET-2) on the App
Students of Class 10 can study Class 10 Science Answer Sheet for 2023 ( SET-2) alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Class 10 Science Answer Sheet for 2023 ( SET-2),
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Class 10 Science Answer Sheet for 2023 ( SET-2) is prepared as per the latest Class 10 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup