Class 10 Science - Previous Year Paper SA 1 Set-3 2015

 Page 1


 
 
 
  
 
SUMMATIVE ASSESMENT- 1 2015-16 
SUBJECT SCIENCE Class – X 
 
 Time allowed: 3 hours                                Maximum Marks: 90 
 
General Instructions: 
1. The question paper comprises of two Sections, A and B. You are to attempt both the sections. 
2. All questions are compulsory 
3. All questions of Section-A and all questions of section –B are to be attempted separately. 
4. Question number 1 to 3 in Section –A are two marks questions. These are to be answered in one word 
or in one sentence
2
' c o  
5. Question number 4 to 6 in Section –A are two marks questions. These are to be answered in about 
word 30 words each. 
6. Question number 7 to 18 in Section –A are three marks questions. These are to be answered in about 
50 words each. 
7 . Question number 19 to 24 in Section –A are five marks questions. These are to be answered in about 
word 70 words each. 
8. . Question number 25 to 33 in Section –B are multiple choice questions based on practical skills. Each 
question is a one mark question. You are to select one most appropriate response out of the four 
provided to you. 
9. . Question number 34 to 36 in Section –B are questions based on practical skills Each question is of 
two marks. 
  
                                        
Section –A 
Q1. Ventricles have thicker muscular walls than the Africa .Give reason. 
Q2Mention the commercial unit of electric energy.  Write its relation with joule 
Q3. Name any one material used to make a solar cell and also mention the range of voltage produced 
by a typical cell. 
Q4. Write the balanced chemical equations for the following reactions and name the type of reaction 
in each case: 
i) Calcium carbonate(s) 
he a t
? ? ?
calcium oxide (s)+Carbon dioxide(g) 
ii) Zinc(s)+ Copper sulphate (aq) ?? ? zinc sulphate (aq)+Cu(s) 
Q5. 15 ml of water and 10ml of sulphuric acid are to be mixed in a beaker. 
i) State the method that should be followed whith reason. 
ii) What is this process called ? 
Page 2


 
 
 
  
 
SUMMATIVE ASSESMENT- 1 2015-16 
SUBJECT SCIENCE Class – X 
 
 Time allowed: 3 hours                                Maximum Marks: 90 
 
General Instructions: 
1. The question paper comprises of two Sections, A and B. You are to attempt both the sections. 
2. All questions are compulsory 
3. All questions of Section-A and all questions of section –B are to be attempted separately. 
4. Question number 1 to 3 in Section –A are two marks questions. These are to be answered in one word 
or in one sentence
2
' c o  
5. Question number 4 to 6 in Section –A are two marks questions. These are to be answered in about 
word 30 words each. 
6. Question number 7 to 18 in Section –A are three marks questions. These are to be answered in about 
50 words each. 
7 . Question number 19 to 24 in Section –A are five marks questions. These are to be answered in about 
word 70 words each. 
8. . Question number 25 to 33 in Section –B are multiple choice questions based on practical skills. Each 
question is a one mark question. You are to select one most appropriate response out of the four 
provided to you. 
9. . Question number 34 to 36 in Section –B are questions based on practical skills Each question is of 
two marks. 
  
                                        
Section –A 
Q1. Ventricles have thicker muscular walls than the Africa .Give reason. 
Q2Mention the commercial unit of electric energy.  Write its relation with joule 
Q3. Name any one material used to make a solar cell and also mention the range of voltage produced 
by a typical cell. 
Q4. Write the balanced chemical equations for the following reactions and name the type of reaction 
in each case: 
i) Calcium carbonate(s) 
he a t
? ? ?
calcium oxide (s)+Carbon dioxide(g) 
ii) Zinc(s)+ Copper sulphate (aq) ?? ? zinc sulphate (aq)+Cu(s) 
Q5. 15 ml of water and 10ml of sulphuric acid are to be mixed in a beaker. 
i) State the method that should be followed whith reason. 
ii) What is this process called ? 
 
 
 
  
 
Q6. Define phototropism. Name the plant hormone which is responsible for phototropism . 
 
Q7. Observe the given figures a ,b and c shown below and recognize the type of reactions shown in 
them . 
 
Q8. Name the acid presents in the following: 
i) Tomato    ii) vinegar            iii)Tamarind  
Q9. a) What are amphoteric oxides? Select the amphoteric  oxides from the following 
       ZnO,
2 3 2 2 2
A l o , N a o, Co , H o 
      b) Give chemical equation for the reaction of any one of the above chosen oxides with anexample 
 
Q10. How is an one different from a mineral? Giving one example for each, explain how metals react 
with oxygen and dill acids .write chemical equations for all reactions. 
Q11. Define breathing. Explain the mechanism of breathing in human beings . 
Q12.  A) Draw labeled diagram of neuromular junction. 
          b) Identify the parts of neuron: 
Q13. Define hormone . Name the hormone secreted by thyroid gland. Write its function. why is if 
advised to use iodized salt ? 
Q14. Find the current drawn from the battery by the network of four resistors shown is the figure. 
Page 3


 
 
 
  
 
SUMMATIVE ASSESMENT- 1 2015-16 
SUBJECT SCIENCE Class – X 
 
 Time allowed: 3 hours                                Maximum Marks: 90 
 
General Instructions: 
1. The question paper comprises of two Sections, A and B. You are to attempt both the sections. 
2. All questions are compulsory 
3. All questions of Section-A and all questions of section –B are to be attempted separately. 
4. Question number 1 to 3 in Section –A are two marks questions. These are to be answered in one word 
or in one sentence
2
' c o  
5. Question number 4 to 6 in Section –A are two marks questions. These are to be answered in about 
word 30 words each. 
6. Question number 7 to 18 in Section –A are three marks questions. These are to be answered in about 
50 words each. 
7 . Question number 19 to 24 in Section –A are five marks questions. These are to be answered in about 
word 70 words each. 
8. . Question number 25 to 33 in Section –B are multiple choice questions based on practical skills. Each 
question is a one mark question. You are to select one most appropriate response out of the four 
provided to you. 
9. . Question number 34 to 36 in Section –B are questions based on practical skills Each question is of 
two marks. 
  
                                        
Section –A 
Q1. Ventricles have thicker muscular walls than the Africa .Give reason. 
Q2Mention the commercial unit of electric energy.  Write its relation with joule 
Q3. Name any one material used to make a solar cell and also mention the range of voltage produced 
by a typical cell. 
Q4. Write the balanced chemical equations for the following reactions and name the type of reaction 
in each case: 
i) Calcium carbonate(s) 
he a t
? ? ?
calcium oxide (s)+Carbon dioxide(g) 
ii) Zinc(s)+ Copper sulphate (aq) ?? ? zinc sulphate (aq)+Cu(s) 
Q5. 15 ml of water and 10ml of sulphuric acid are to be mixed in a beaker. 
i) State the method that should be followed whith reason. 
ii) What is this process called ? 
 
 
 
  
 
Q6. Define phototropism. Name the plant hormone which is responsible for phototropism . 
 
Q7. Observe the given figures a ,b and c shown below and recognize the type of reactions shown in 
them . 
 
Q8. Name the acid presents in the following: 
i) Tomato    ii) vinegar            iii)Tamarind  
Q9. a) What are amphoteric oxides? Select the amphoteric  oxides from the following 
       ZnO,
2 3 2 2 2
A l o , N a o, Co , H o 
      b) Give chemical equation for the reaction of any one of the above chosen oxides with anexample 
 
Q10. How is an one different from a mineral? Giving one example for each, explain how metals react 
with oxygen and dill acids .write chemical equations for all reactions. 
Q11. Define breathing. Explain the mechanism of breathing in human beings . 
Q12.  A) Draw labeled diagram of neuromular junction. 
          b) Identify the parts of neuron: 
Q13. Define hormone . Name the hormone secreted by thyroid gland. Write its function. why is if 
advised to use iodized salt ? 
Q14. Find the current drawn from the battery by the network of four resistors shown is the figure. 
 
 
 
  
 
 
  Q15. A circuit has line of 5a. How many lampas of rating 40W:220V can simultaneously run on  
   Q16. Can a freely suspended current carrying solenoid stay in any direction? Justify your answer 
what will happen when the direction of current in the solenoid of reversed? Explain. 
Q17. Kapil was feeling proud after the installation of solar water heater in his roof top. He knows 
that he has contributed towards the conservation of environment. Now answer the following 
questions. 
i) Write one advantage and one limitation of using a solar water heater. 
ii) How has kapil contributed towards the conservation of environment? 
iii) State the values that prompted kapil’s action. 
Q18. List any three ways in which construction of dams for production of electricity adversely 
affects the environment of that place. 
Q19. Give reason for the following: 
i) Carbon is not used as reducing agent for more reactive metals in metallurgy? 
ii) Copper and aluminum wires are usually used for electricity transmission. 
iii) Alloys are used in electrical heating devices rather than pure metals. 
iv) Gold ornaments look new even after several years of use. 
v) An iron grill should be painted frequently. 
Q20.  A) State the chemical properties on which the following uses or baking soda are  
i) As an antacid  
ii) As soda –acid fire extinguisher. 
iii) To make bread and cake soft and spongy. 
           b) How washing soda is obtained from baking soda? Write balanced chemical equation. 
Q21. a) Explain how does the exchange of gases occur in plants across the surface of stems roots and 
leaves. 
b) How are water and minerals transported in plants? 
Page 4


 
 
 
  
 
SUMMATIVE ASSESMENT- 1 2015-16 
SUBJECT SCIENCE Class – X 
 
 Time allowed: 3 hours                                Maximum Marks: 90 
 
General Instructions: 
1. The question paper comprises of two Sections, A and B. You are to attempt both the sections. 
2. All questions are compulsory 
3. All questions of Section-A and all questions of section –B are to be attempted separately. 
4. Question number 1 to 3 in Section –A are two marks questions. These are to be answered in one word 
or in one sentence
2
' c o  
5. Question number 4 to 6 in Section –A are two marks questions. These are to be answered in about 
word 30 words each. 
6. Question number 7 to 18 in Section –A are three marks questions. These are to be answered in about 
50 words each. 
7 . Question number 19 to 24 in Section –A are five marks questions. These are to be answered in about 
word 70 words each. 
8. . Question number 25 to 33 in Section –B are multiple choice questions based on practical skills. Each 
question is a one mark question. You are to select one most appropriate response out of the four 
provided to you. 
9. . Question number 34 to 36 in Section –B are questions based on practical skills Each question is of 
two marks. 
  
                                        
Section –A 
Q1. Ventricles have thicker muscular walls than the Africa .Give reason. 
Q2Mention the commercial unit of electric energy.  Write its relation with joule 
Q3. Name any one material used to make a solar cell and also mention the range of voltage produced 
by a typical cell. 
Q4. Write the balanced chemical equations for the following reactions and name the type of reaction 
in each case: 
i) Calcium carbonate(s) 
he a t
? ? ?
calcium oxide (s)+Carbon dioxide(g) 
ii) Zinc(s)+ Copper sulphate (aq) ?? ? zinc sulphate (aq)+Cu(s) 
Q5. 15 ml of water and 10ml of sulphuric acid are to be mixed in a beaker. 
i) State the method that should be followed whith reason. 
ii) What is this process called ? 
 
 
 
  
 
Q6. Define phototropism. Name the plant hormone which is responsible for phototropism . 
 
Q7. Observe the given figures a ,b and c shown below and recognize the type of reactions shown in 
them . 
 
Q8. Name the acid presents in the following: 
i) Tomato    ii) vinegar            iii)Tamarind  
Q9. a) What are amphoteric oxides? Select the amphoteric  oxides from the following 
       ZnO,
2 3 2 2 2
A l o , N a o, Co , H o 
      b) Give chemical equation for the reaction of any one of the above chosen oxides with anexample 
 
Q10. How is an one different from a mineral? Giving one example for each, explain how metals react 
with oxygen and dill acids .write chemical equations for all reactions. 
Q11. Define breathing. Explain the mechanism of breathing in human beings . 
Q12.  A) Draw labeled diagram of neuromular junction. 
          b) Identify the parts of neuron: 
Q13. Define hormone . Name the hormone secreted by thyroid gland. Write its function. why is if 
advised to use iodized salt ? 
Q14. Find the current drawn from the battery by the network of four resistors shown is the figure. 
 
 
 
  
 
 
  Q15. A circuit has line of 5a. How many lampas of rating 40W:220V can simultaneously run on  
   Q16. Can a freely suspended current carrying solenoid stay in any direction? Justify your answer 
what will happen when the direction of current in the solenoid of reversed? Explain. 
Q17. Kapil was feeling proud after the installation of solar water heater in his roof top. He knows 
that he has contributed towards the conservation of environment. Now answer the following 
questions. 
i) Write one advantage and one limitation of using a solar water heater. 
ii) How has kapil contributed towards the conservation of environment? 
iii) State the values that prompted kapil’s action. 
Q18. List any three ways in which construction of dams for production of electricity adversely 
affects the environment of that place. 
Q19. Give reason for the following: 
i) Carbon is not used as reducing agent for more reactive metals in metallurgy? 
ii) Copper and aluminum wires are usually used for electricity transmission. 
iii) Alloys are used in electrical heating devices rather than pure metals. 
iv) Gold ornaments look new even after several years of use. 
v) An iron grill should be painted frequently. 
Q20.  A) State the chemical properties on which the following uses or baking soda are  
i) As an antacid  
ii) As soda –acid fire extinguisher. 
iii) To make bread and cake soft and spongy. 
           b) How washing soda is obtained from baking soda? Write balanced chemical equation. 
Q21. a) Explain how does the exchange of gases occur in plants across the surface of stems roots and 
leaves. 
b) How are water and minerals transported in plants? 
 
 
 
  
 
Q22. What is meant by electric circuit? What is dine in order to have continuous flow of electric 
charge fro, a poing A to another point Bin an electric circuit? Write the relation between coulombs 
and ampere. 
Q23. Calculate the number of electrons passing per second through a conductor to produce a 
current of one ampere. 
(Charge on electron =
19
1 6 x 10
?
 coulomb) 
Q24. A) Write three distinguishing features between an alternating current and a direct current. 
B) A current through a horizontal power line flows in east to west direction. What is the 
direction of magnetic field at a point directly below it and at a point directly above it? Name 
the rule that you have applied in this case. 
Q25. A piece of wire is redrawn, without change in volume so that its radius is halved. Compare the 
new resistance with the original resistance. 
SECTION –B 
Q26. You are given solutions A and B whose 
H
p
values are 6 and 8 respectively .what di you inter 
from this information? 
a) Strength of solution B is higher than A 
b) A is an acid while B is a base. 
c) Both are acid solutions 
d) Both are base solutions.. 
Q27) Identify the colour change in 
H
p paper when a drop of sample ,which has 
H
p 14 in standard 
H
p -colour chart placed on it. 
a) Red                      b) yellow              c)Blue                  d)  green 
Four students P,Q,R and S studied the chemical reactions between zinc metal and dill  
Hydrochloric acid. They recorded their observation as given in the table: 
Student  observations   
 Colour of the gas liberated  Smell of the gas liberated  Combustibility test of the gas 
P  Brown  Like rotten egg Burns with pop sound 
Q  Colouriess Odourless Buns  
R  Pale yellow Odourless Dose not burn 
Page 5


 
 
 
  
 
SUMMATIVE ASSESMENT- 1 2015-16 
SUBJECT SCIENCE Class – X 
 
 Time allowed: 3 hours                                Maximum Marks: 90 
 
General Instructions: 
1. The question paper comprises of two Sections, A and B. You are to attempt both the sections. 
2. All questions are compulsory 
3. All questions of Section-A and all questions of section –B are to be attempted separately. 
4. Question number 1 to 3 in Section –A are two marks questions. These are to be answered in one word 
or in one sentence
2
' c o  
5. Question number 4 to 6 in Section –A are two marks questions. These are to be answered in about 
word 30 words each. 
6. Question number 7 to 18 in Section –A are three marks questions. These are to be answered in about 
50 words each. 
7 . Question number 19 to 24 in Section –A are five marks questions. These are to be answered in about 
word 70 words each. 
8. . Question number 25 to 33 in Section –B are multiple choice questions based on practical skills. Each 
question is a one mark question. You are to select one most appropriate response out of the four 
provided to you. 
9. . Question number 34 to 36 in Section –B are questions based on practical skills Each question is of 
two marks. 
  
                                        
Section –A 
Q1. Ventricles have thicker muscular walls than the Africa .Give reason. 
Q2Mention the commercial unit of electric energy.  Write its relation with joule 
Q3. Name any one material used to make a solar cell and also mention the range of voltage produced 
by a typical cell. 
Q4. Write the balanced chemical equations for the following reactions and name the type of reaction 
in each case: 
i) Calcium carbonate(s) 
he a t
? ? ?
calcium oxide (s)+Carbon dioxide(g) 
ii) Zinc(s)+ Copper sulphate (aq) ?? ? zinc sulphate (aq)+Cu(s) 
Q5. 15 ml of water and 10ml of sulphuric acid are to be mixed in a beaker. 
i) State the method that should be followed whith reason. 
ii) What is this process called ? 
 
 
 
  
 
Q6. Define phototropism. Name the plant hormone which is responsible for phototropism . 
 
Q7. Observe the given figures a ,b and c shown below and recognize the type of reactions shown in 
them . 
 
Q8. Name the acid presents in the following: 
i) Tomato    ii) vinegar            iii)Tamarind  
Q9. a) What are amphoteric oxides? Select the amphoteric  oxides from the following 
       ZnO,
2 3 2 2 2
A l o , N a o, Co , H o 
      b) Give chemical equation for the reaction of any one of the above chosen oxides with anexample 
 
Q10. How is an one different from a mineral? Giving one example for each, explain how metals react 
with oxygen and dill acids .write chemical equations for all reactions. 
Q11. Define breathing. Explain the mechanism of breathing in human beings . 
Q12.  A) Draw labeled diagram of neuromular junction. 
          b) Identify the parts of neuron: 
Q13. Define hormone . Name the hormone secreted by thyroid gland. Write its function. why is if 
advised to use iodized salt ? 
Q14. Find the current drawn from the battery by the network of four resistors shown is the figure. 
 
 
 
  
 
 
  Q15. A circuit has line of 5a. How many lampas of rating 40W:220V can simultaneously run on  
   Q16. Can a freely suspended current carrying solenoid stay in any direction? Justify your answer 
what will happen when the direction of current in the solenoid of reversed? Explain. 
Q17. Kapil was feeling proud after the installation of solar water heater in his roof top. He knows 
that he has contributed towards the conservation of environment. Now answer the following 
questions. 
i) Write one advantage and one limitation of using a solar water heater. 
ii) How has kapil contributed towards the conservation of environment? 
iii) State the values that prompted kapil’s action. 
Q18. List any three ways in which construction of dams for production of electricity adversely 
affects the environment of that place. 
Q19. Give reason for the following: 
i) Carbon is not used as reducing agent for more reactive metals in metallurgy? 
ii) Copper and aluminum wires are usually used for electricity transmission. 
iii) Alloys are used in electrical heating devices rather than pure metals. 
iv) Gold ornaments look new even after several years of use. 
v) An iron grill should be painted frequently. 
Q20.  A) State the chemical properties on which the following uses or baking soda are  
i) As an antacid  
ii) As soda –acid fire extinguisher. 
iii) To make bread and cake soft and spongy. 
           b) How washing soda is obtained from baking soda? Write balanced chemical equation. 
Q21. a) Explain how does the exchange of gases occur in plants across the surface of stems roots and 
leaves. 
b) How are water and minerals transported in plants? 
 
 
 
  
 
Q22. What is meant by electric circuit? What is dine in order to have continuous flow of electric 
charge fro, a poing A to another point Bin an electric circuit? Write the relation between coulombs 
and ampere. 
Q23. Calculate the number of electrons passing per second through a conductor to produce a 
current of one ampere. 
(Charge on electron =
19
1 6 x 10
?
 coulomb) 
Q24. A) Write three distinguishing features between an alternating current and a direct current. 
B) A current through a horizontal power line flows in east to west direction. What is the 
direction of magnetic field at a point directly below it and at a point directly above it? Name 
the rule that you have applied in this case. 
Q25. A piece of wire is redrawn, without change in volume so that its radius is halved. Compare the 
new resistance with the original resistance. 
SECTION –B 
Q26. You are given solutions A and B whose 
H
p
values are 6 and 8 respectively .what di you inter 
from this information? 
a) Strength of solution B is higher than A 
b) A is an acid while B is a base. 
c) Both are acid solutions 
d) Both are base solutions.. 
Q27) Identify the colour change in 
H
p paper when a drop of sample ,which has 
H
p 14 in standard 
H
p -colour chart placed on it. 
a) Red                      b) yellow              c)Blue                  d)  green 
Four students P,Q,R and S studied the chemical reactions between zinc metal and dill  
Hydrochloric acid. They recorded their observation as given in the table: 
Student  observations   
 Colour of the gas liberated  Smell of the gas liberated  Combustibility test of the gas 
P  Brown  Like rotten egg Burns with pop sound 
Q  Colouriess Odourless Buns  
R  Pale yellow Odourless Dose not burn 
 
 
 
  
 
S  Colourless Pungent smell  Burns with red flame 
The right set of observations is that os students. 
a)   P                 b)                   Q             c) R                          d)  S 
Q28. Select the correct order od reactivity for four metals copper ,iron,zinc, aluminium: 
a)A1>Zn>Fe>Cu                               b)A1>Zn>Cu>Fe  
       c) Zn>A1>Fe>Cu                               d) A1>Fe>Zn>Cu 
Q29. If M+BX ?MX +B and Bis seen as reddish brown deposit, then M and BX respectively are : 
a) Iron and aluminium sulphate 
b) Iron and zic sulpate 
c) Aluminimum and copper sulphate 
d) Zinc and Iron aluminimum sylphate 
Q30. In an experiment to determine the equivalent sesistance of two resistors in series. Name of the 
coponents X,Tans Z in the cicuit given below repectively are: 
 
a) Rheostat, resistanve, voltmeter 
b) Voltmeter . ammeter, rheostat 
c) Ammeter, voltmeter,rheostat 
d) Ammeter.resistance,voltmeter 
Q31. Which of the two curuit components are connected in parallet in the following circuit diagram 
shown in figure given below? 
 
a) Rheostat and voltmeter 
b) Voltmeter and ammeter