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CBSE Class-10 Exam 2016 : Marking Scheme, Science (Foreign)

CBSE Class-10 Exam 2016 : Marking Scheme, Science (Foreign)

CBSE Class-10 Exam 2016 :  Science (Foreign) Set -1

MARKING SCHEME
CLASS X – FOREIGN

Code No. 31/2/1
Expected Answer/ Value point Marks Total
SECTION – A

Q1. Carbon, Due to strong C—C bond ½, ½ 1
Q2. Budding / Regeneration 1/2
Asexual reproduction 1/2 1
Q3. It is the physical, chemical and biological conditions of the region. 1
Q4. Focal length of both the mirrors will be the same / Mirror AB will always form virtual image as it is a diverging / convex mirror ½+ ½ 2
Q5. The development which can be maintained for a long time without undue damage to the environment 1
Two objectives:- i)To provide the economic well being to the present and future
generation , ii)To maintain a healthy environment and life support system ½ + ½ 2
Q6. i)By the local people for the fulfilment of their daily needs ½
ii)By industrialists- deforestation for industrial needs
iii)Deforestation for developmental projects – building,roads, dams etc.
iv)By tourists or in making arrangements for tourists
Q7. Ethanol, C2H5OH /C2H6O ½,1/2
C2H5OH →CH2 = CH2 + H2O
                              Ethene 1, ½
Role of conc H2SO4− dehydrating agent ½ 3
Q8. P—Ethanol, Q—Ethanoic acid ,R—Hydrogen 3x ½
CH 3CH2 OH Acidified K>CH COOH 3
2CH3COOH + 2Na 2 CH3COONa + H2 ½ 3
Q9. i)Aim of classification--systematic study of the known elements
ii)Basic property—Atomic number
iii)Properties of the elements are a periodic function of their atomic numbers.
iv)Metals on the left
v)Non–metals on the right.
vi)Metalloids at the border of metals and beginning of non-metals 6x ½ 3
Q10. X(20)--- 2,8,8,2.It is calcium. ½, ½
Second group,fourth period ½ , ½
CaO + H2O Ca(OH)2 1 3
Q11. Pollination − process of transfer of pollen grains from the anther to stigma of the flower 1
Two types − Self pollination and cross pollination Self pollination is the transfer of pollen grains from anther to stigma of the same flower, whereas in cross pollination transfer of pollen grains is from anther of one flower to the stigma of another flower. ½,1/2
Q12. i)Each piece regenerates into a new planaria 1
ii)Its filaments breaks into smaller pieces/fragments and each fragment gives rise to a new filament.
iii)It releases spores which germinate into new mycelium in moist conditions.

Q13. Two major processes namely formation of gametes and fusion of gametes
constitute sexual reproduction 1
Significance—i) Incorporates the process of combining DNA from two different
individuals during reproduction.
ii) Increases genetic variation.
iii) Promotes diversity in the offsprings.
iv) Plays a role in the origin of new species

Click Here to Download Science (Foreign) Set-1

Click Here to Download Science (Foreign) Set-2

Click Here to Download Science (Foreign) Set-3

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CBSE Class-10 Exam 2016 : Marking Scheme, Science (Outside)

CBSE Class-10 Exam 2016 : Marking Scheme, Science (Outside)

CBSE Class-10 Exam 2016 :  Science (Outside) Set -1

SUMMATIVE ASSESSMENT - II
March 2016
Marking Scheme – Science (Outside Delhi) 31/1
1. The Marking Scheme provides general guidelines to reduce subjectivity in the marking. It carries only suggested value points for the answer. These are only guidelines and do not constitute the complete answer. Any other individual response with suitable justification should also be accepted even if there is no reference to the text.
2. Evaluation is to be done as per instructions provided in the Marking Scheme. It should not be done according to one's own interpretation or any other consideration. Marking Scheme should be strictly adhered to and religiously followed.
3. If a question has parts, please award marks in the right hand side for each part. Marks awarded for different parts of the question should then be totalled up and written in the left hand margin.
4. If a question does not have any parts, marks be awarded in the left hand side margin.
5. If a candidate has attempted an extra question, marks obtained in the question attempted first should be retained and the other answer should be scored out.
6. Wherever only two/three of a 'given' number of examples/factors/points are expected only the first two/three or expected number should be read. The rest are irrelevant and should not be examined.
7. There should be no effort at 'moderation' of the marks by the evaluating teachers. The actual total marks obtained by the candidate may be of no concern of the evaluators.
8. All the Head Examiners / Examiners are instructed that while evaluating the answer scripts, if the answer is found to be totally incorrect, the (X) should be marked on the incorrect answer and awarded ‘0’ marks.
9. ½ mark may be deducted if a candidate either does not write units or writes wrong units in the final answer of a numerical problem.
10. A full scale of mark 0 to 100 has to be used. Please do not hesitate to award full marks if the answer deserves it.
11. As per orders of the Hon’ble Supreme Court the candidates would now be permitted to obtain photocopy of the Answer Book on request on payment of the prescribed fee. All Examiners/Head Examiners are once again reminded that they must ensure that evaluation is carried out strictly as per value points given in the marking scheme.
 
MARKING SCHEME
CLASS X – OUTSIDE DELHI
Code No. 31/1
Expected Answer/ Value point Marks Total
SECTION – A

Q1. Propanol,    ½, ½ 1


Q2. Its filament breaks up into smaller fragments or pieces, and each fragment grows into a new filament/individual. ½, ½ 1
Q3. Ultraviolet rays from the sun penetrate down the earth and cause health hazards/skin cancer in human beings 1 1
Q4.
  • Concave Mirrors / Converging Mirrors ½
  • When a solar furnace is placed at the focus of a large concave mirror/ reflector, it focuses a parallel beam of light on the furnace, consequently a high temperature is achieved after some time. 3 x ½ 2
Q5.
  • Chipko Andolan (Hug the Trees Movement) – Women of Reni village in Garhwal hugged the tree trunks preventing the contractors from felling the trees. 1
  • This Andolan quickly spread to other parts of the country and forced the government to rethink their priorities in the use of forest produce, consequently the local people benefitted.
  • The environment was saved from permanent damage/ affected the quality of soil and the sources of water. ½, ½ 2
Q6. Burning of fossil fuels produces green house gases(CO , CO2,water vapour, oxides of nitrogen, sulphur). High concentration of CO2 causes global warming. 1, 1 2
 
Q7.
a) 2CH3COOH + 2Na → 2CH3COONa + H         ½, ½
                                         Sodium ethanoate/ Sodium acetate
b) CH3COOH + NaOH → CH3COONa + H2O       ½, ½
                                           Sodium ethanoate/ sodium acetate
c) CH3COOH +C2H5OH → CH3COOC2H5 + H2O   ½, ½ 3
                                              Ethyl ethanoate/ ester

Click Here to Download Science (Outside) Set-1

Click Here to Download Science (Outside) Set-2

Click Here to Download Science (Outside) Set-3

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CBSE Class-10 Exam 2016 : Marking Scheme, Science (Delhi)

CBSE Class-10 Exam 2016 : Marking Scheme, Science (Delhi)

CBSE Class-10 Exam 2016 :  Science (Delhi) Set -1

MARKING SCHEME
CLASS X – DELHI

Code No. 31/1/1
Expected Answer/ Value point Marks Total
SECTION – A

Q 1. (i) C3H6 ½
(ii) C5H8 ½ 1
 
Q2. Leaf (notches) 1 1

Q3. Natural ecosystem – Forest/ Lake/ Pond/ River (Any two) ½+½ 1
 
Q4. When the object is placed in front of the mirror –
(i) between its pole and focus ½
(ii) between the focus and centre of curvature ½
       In case (i) the image is virtual and erect ½
In case (ii) the image is real and inverted ½ 2
 
Q5. Advantages of watershed management –
(i) mitigates drought and floods
(ii) increase the life of the dams and reservoirs downstream
(iii) increases the biomass production and thereby the income of the watershed community.
(iv) helps in maintaining ecological balance by scientific conservation of soil and water. or any other (Any four) 4 x ½ 2
 
Q6.
  • In West Bengal the Sal forests had been very badly degraded. ½
  • A forest officer involved villagers in protection of Sal forest and gave them employment in silviculture and harvesting operations. ½
  • Villagers were allowed to collect firewood and fodder on a nominal payment. ½
  • Within a period of 10 years the previously worthless forests became valuable. ½ 2
Q7.
  • Covalent compounds are those compounds which are formed by sharing of electrons between two atoms / which contain covalent bonds. 1
  • Covalent compounds are different from ionic compounds because the ionic compounds are formed by the transference of electrons. ½
  • Three characteristics of covalent compounds:

(i) Generally have low melting and boiling points.
(ii) Generally insoluble or less soluble in water but soluble in organic solvents.
(iii)Do not conduct electricity. (Or any other characteristic) (Any three) 3 x ½ 3

Click Here to Download Science (Delhi) Set-1

Click Here to Download Science (Delhi) Set-2

Click Here to Download Science (Delhi) Set-3

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CBSE Class-10 Exam 2016 : Marking Scheme, Mathematics

CBSE Class-10 Exam 2016 : Marking Scheme, Mathematics

CBSE Class-10 Exam 2016 :  Mathematics (Delhi)

March 2016
Marking Scheme — Mathematics 30/1/1, 30/1/2, 30/1/3

General Instructions:
1. The Marking Scheme provides general guidelines to reduce subjectivity in the marking. The answers given in the Marking Scheme are suggested answers. The content is thus indicative. If a student has given any other answer which is different from the one given in the Marking Scheme, but conveys the meaning, such answers should be given full weightage
2. Evaluation is to be done as per instructions provided in the marking scheme. It should not be done according to one’s own interpretation or any other consideration — Marking Scheme should be strictly adhered to and religiously followed.
3. Alternative methods are accepted. Proportional marks are to be awarded.
4. In question (s) on differential equations, constant of integration has to be written.
5. If a candidate has attempted an extra question, marks obtained in the question attempted first should be retained and the other answer should be scored out.
6. A full scale of marks - 0 to 100 has to be used. Please do not hesitate to award full marks if the answer deserves it.
7. Separate Marking Scheme for all the three sets has been given.
8. As per orders of the Hon’ble Supreme Court. The candidates would now be permitted to obtain photocopy of the Answer book on request on payment of the prescribed fee. All examiners/Head Examiners are once again reminded that they must ensure that evaluation is carried out strictly as per value points for each answer as given in the Marking Scheme.
QUESTION PAPER CODE 30/1/1
EXPECTED ANSWER/VALUE POINTS
SECTION A
 

Click Here to Download Mathematics (Delhi)

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Click Here to Download Mathematics (Outside)

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CBSE Class-10 Exam 2016 : NSQF Scheme Question Paper, Introduction to Tourism

CBSE Class-10 Exam 2016 : NSQF Scheme

Question Paper, Introduction to Tourism

CBSE Class-10 Exam 2016 :   Introduction to Tourism

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CBSE Class-10 Exam 2016 : NSQF Scheme Question Paper, Information Technology

CBSE Class-10 Exam 2016 : NSQF Scheme

Question Paper, Information Technology

CBSE Class-10 Exam 2016 :   Information Technology

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CBSE Class-10 Exam 2016 : NSQF Scheme Question Paper, Dynamics of Retailing

CBSE Class-10 Exam 2016 : NSQF Scheme

Question Paper, Dynamics of Retailing

CBSE Class-10 Exam 2016 :   Dynamics of Retailing

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CBSE Class-10 Exam 2016 : NSQF Scheme Question Paper, Automobile Technology

CBSE Class-10 Exam 2016 : NSQF Scheme

Question Paper, Automobile Technology

CBSE Class-10 Exam 2016 :   Automobile Technology

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CBSE Class-10 Exam 2016 : NSQF Scheme Question Paper, Security

CBSE Class-10 Exam 2016 : NSQF Scheme

Question Paper, Security

CBSE Class-10 Exam 2016 :  Security

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CBSE Class-12 Exam 2016 : All India Scheme Question Paper, Sanskrit

Class 12 papers

CBSE Class-12 Exam 2016 : All India Scheme Question Paper, Sanskrit

CBSE Class-12 Exam 2017 :  Sanskrit

Class 12 papers​​​

Class 12 papers

Class 12 papers

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CBSE Class-12 Exam 2016 : All India Scheme Question Paper, Urdu

Class 12 papers

CBSE Class-12 Exam 2016 : All India Scheme Question Paper, Urdu

CBSE Class-12 Exam 2017 :  Urdu (Core)

Class 12 papers​​​

Class 12 papers

Class 12 papers

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CBSE Class-12 Exam 2016 : All India Scheme Question Paper, Economics

Class 12 papers

CBSE Class-12 Exam 2016 : All India Scheme Question Paper, Economics

CBSE Class-12 Exam 2017 :  Economics

Class 12 papers​​​

Class 12 papers

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CBSE Class-10 Exam 2016 : Foreign Scheme Question Paper, Social Science

CBSE Class-10 Exam 2016 : Foreign Scheme

Question Paper, Social Science

CBSE Class-10 Exam 2016 :  Social Science

SUMMATIVE ASSESSMENT-II
SOCIAL SCIENCE

Time allowed : 3 hours

Maximum Marks : 90

1. What was the meaning of liberalism in early nineteenth century in Europe ?
OR
Name the writer who wrote a play based on the lives of the Trung sisters.

2. How is iron-ore transported from Kudremukh mines to a port near Mangaluru ?

3. Differentiate between ‘Sectional interest groups’ and ‘Public interest groups’.

4. Why is one party political system not considered a good democratic system ?

5. State the main aim of Backward and Minority Communities Employees Federation.

6. Due to which reason the latest models of different items are available within our reach ?

7.  If you are not interested to buy a brush with tooth-paste but shopkeeper denied to sell tooth-paste only. In this case which consumer right is being violated by the seller ?

8. Which logo will you like to see on the electric heater to be sure of its quality ?

9.  “Culture had played an important role in the development of nationalism in Europe during eighteenth and nineteenth centuries.” Support the statement with examples.

OR
“French tried to solve educational problems in Vietnam in different ways.” Support the statement with examples.

10. Why did the different social groups join the Civil Disobedience Movement ? Explain.

11. Simon Commission was greeted with slogan ‘Go back Simon’ at arrival in India. Support this reaction of Indians with arguments.

12. Classify industries on the basis of their main role. How are they different from each other ?

13.“There is a pressing need to use renewable energy resources.” Justify the statement with suitable arguments.

14.“India is an important iron and steel producing country in the world. Yet we are not able to perform to our full potential.” Suggest and explain any three measures to get full potential.

15. What is a political party ? State any two points of the ideology of Bhartiya Janta Party.

16.  Who led the protest against water privatization in Bolivia ? Describe the ways of protest adopted by that organization

Click Here to Download Set-1

Click Here to Download Set-2

Click Here to Download Set-3

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