Science Past Year Paper SA-1(Set-3)- 2014, Class 9, CBSE Class 9 Notes | EduRev

Class 9 : Science Past Year Paper SA-1(Set-3)- 2014, Class 9, CBSE Class 9 Notes | EduRev

 Page 1


 
 
 
 
Summative Assessment-1 2014-2015 
 Science 
Class – IX 
 
 Time allowed: 3:00 hours                                Maximum Marks: 90 
 
 General Instructions: 
a) The question paper comprises of two sections, A and B. You are to attempt both the 
sections. 
b) All questions are compulsory. 
c) All questions of Section – A and Section – B are to be attempted separately. 
d) Q. No. 1 to 3 in Section A – 1 marks questions. These are to be answered in about one 
word or in one sentence. 
e) Q. No. 4 to 6 in Section A – 2 marks questions. These are to be answered in about 30 
words each. 
f) Q. No. 7 to 18 in Section A – 3 marks questions. These are to be answered in about 50 
words each. 
g) Q. No. 19 to 24 in Section A – 5 marks questions. These are to be answered in about 70 
words each. 
h) Q. No. 25 to 33 in Section B are MCQ based on practical skills. Each question is a 1 mark 
question. You are to select one most appropriate response out of the four provided to 
you.  
i) Question number 34 to 36 in Section – B are questions based on practical skills are two 
marks questions. 
 
 
Section A 
1. Name the muscular tissue whose cells are spindle shaded and uninucleate 
2. If the weight of a body on the earth is 6 N, what will be on the moon (Given that acceleration 
due to gravity on moon is one sixth of that on the earth) 
3. Write the formula to calculate the speed of a body moving along a circular path of radius ‘r’ 
(Time taken by the body to complete one revolution is ‘t’). 
4. How surface area and wind speed effects the rate of evaporation. Explain. 
5. What would happen if lysosomes did not have any enzymes in them? Explain. 
6. Lokesh saw many apples on the tree but was not able to pluck them. His friend asked him to 
shake the branches. While shaking few apples fell down. Explain. Why? 
7. You are provided a mixture of mustard oil and water. Name the technique to separate it and 
write the principle involved. Draw diagram of the technique used. 
8. a) Give an example where change in physical state occurs by change in pressure. 
b) State two factors which determine the rate of diffusion of a liquid in another liquid. 
9. a) Tyndall effect can be observed when sunlight passes through a canopy of dense forest. 
Explain it. 
b) Give any two examples of colloids. 
Page 2


 
 
 
 
Summative Assessment-1 2014-2015 
 Science 
Class – IX 
 
 Time allowed: 3:00 hours                                Maximum Marks: 90 
 
 General Instructions: 
a) The question paper comprises of two sections, A and B. You are to attempt both the 
sections. 
b) All questions are compulsory. 
c) All questions of Section – A and Section – B are to be attempted separately. 
d) Q. No. 1 to 3 in Section A – 1 marks questions. These are to be answered in about one 
word or in one sentence. 
e) Q. No. 4 to 6 in Section A – 2 marks questions. These are to be answered in about 30 
words each. 
f) Q. No. 7 to 18 in Section A – 3 marks questions. These are to be answered in about 50 
words each. 
g) Q. No. 19 to 24 in Section A – 5 marks questions. These are to be answered in about 70 
words each. 
h) Q. No. 25 to 33 in Section B are MCQ based on practical skills. Each question is a 1 mark 
question. You are to select one most appropriate response out of the four provided to 
you.  
i) Question number 34 to 36 in Section – B are questions based on practical skills are two 
marks questions. 
 
 
Section A 
1. Name the muscular tissue whose cells are spindle shaded and uninucleate 
2. If the weight of a body on the earth is 6 N, what will be on the moon (Given that acceleration 
due to gravity on moon is one sixth of that on the earth) 
3. Write the formula to calculate the speed of a body moving along a circular path of radius ‘r’ 
(Time taken by the body to complete one revolution is ‘t’). 
4. How surface area and wind speed effects the rate of evaporation. Explain. 
5. What would happen if lysosomes did not have any enzymes in them? Explain. 
6. Lokesh saw many apples on the tree but was not able to pluck them. His friend asked him to 
shake the branches. While shaking few apples fell down. Explain. Why? 
7. You are provided a mixture of mustard oil and water. Name the technique to separate it and 
write the principle involved. Draw diagram of the technique used. 
8. a) Give an example where change in physical state occurs by change in pressure. 
b) State two factors which determine the rate of diffusion of a liquid in another liquid. 
9. a) Tyndall effect can be observed when sunlight passes through a canopy of dense forest. 
Explain it. 
b) Give any two examples of colloids. 
 
 
 
 
10. a) Blood is called a fluid connective tissue? State reason. 
b) Name the various components of blood. 
c) State the main function of blood. 
11. Draw a plant cell and lebel. 
a) Two cell organelles that contain their own genetic material 
b) The organelles where protein synthesis occurs 
12. a) Is it possible that the train in which you are sitting appears to move while it is at rest? 
b) Can the train appear to be at rest while moving? Justify your answers. 
13. Find the weight of an object at a height 6400 km above the earth’s surface. The weight of the 
object at the surface of the earth is 20 N and the radius of the earth is 6,400 km. 
14. Is it possible for a body to have it velocity and acceleration pointing in opposite dierections? 
15.   
  
The velocity-time graph of a truck is plotted below. 
a) Calculate the magnitude of displacement of the truck in 15 seconds. 
b) During which part of the journey was the truck decelerating? 
c) Calculating the magnitude of average velocity of the truck. 
16. a) Define mass and weight. 
b) Write their SI units. 
c) distinguish between the two quantities. 
17. Kumar had just given class IX examination. During summer vacation he decided to visit his 
parental village. When he saw the condition of the natives he decided to help them. He tested 
the soil and found that the basic reason for low productivity was that the soil was deficient in 
nutrients.3 
a) How many nutrients are supplied by the soil to the plants? Classify them on the basis of 
the amount they are required. 
b) Which physiological process in plants are affected by deficiency of the nutrients? 
c) Write two values that motivated Kumar to help villagers. 
18. Differentiate between “capture fishing” and “culture fishing”? 
19. Identify the physical and chemical changes from the following- 
a) Heating the mixture of iron and Sulphur. 
b) Ripening of fruits 
c) Dissolution of salt in water 
d) Rusting of iron-chair 
e) Making egg omelets 
Page 3


 
 
 
 
Summative Assessment-1 2014-2015 
 Science 
Class – IX 
 
 Time allowed: 3:00 hours                                Maximum Marks: 90 
 
 General Instructions: 
a) The question paper comprises of two sections, A and B. You are to attempt both the 
sections. 
b) All questions are compulsory. 
c) All questions of Section – A and Section – B are to be attempted separately. 
d) Q. No. 1 to 3 in Section A – 1 marks questions. These are to be answered in about one 
word or in one sentence. 
e) Q. No. 4 to 6 in Section A – 2 marks questions. These are to be answered in about 30 
words each. 
f) Q. No. 7 to 18 in Section A – 3 marks questions. These are to be answered in about 50 
words each. 
g) Q. No. 19 to 24 in Section A – 5 marks questions. These are to be answered in about 70 
words each. 
h) Q. No. 25 to 33 in Section B are MCQ based on practical skills. Each question is a 1 mark 
question. You are to select one most appropriate response out of the four provided to 
you.  
i) Question number 34 to 36 in Section – B are questions based on practical skills are two 
marks questions. 
 
 
Section A 
1. Name the muscular tissue whose cells are spindle shaded and uninucleate 
2. If the weight of a body on the earth is 6 N, what will be on the moon (Given that acceleration 
due to gravity on moon is one sixth of that on the earth) 
3. Write the formula to calculate the speed of a body moving along a circular path of radius ‘r’ 
(Time taken by the body to complete one revolution is ‘t’). 
4. How surface area and wind speed effects the rate of evaporation. Explain. 
5. What would happen if lysosomes did not have any enzymes in them? Explain. 
6. Lokesh saw many apples on the tree but was not able to pluck them. His friend asked him to 
shake the branches. While shaking few apples fell down. Explain. Why? 
7. You are provided a mixture of mustard oil and water. Name the technique to separate it and 
write the principle involved. Draw diagram of the technique used. 
8. a) Give an example where change in physical state occurs by change in pressure. 
b) State two factors which determine the rate of diffusion of a liquid in another liquid. 
9. a) Tyndall effect can be observed when sunlight passes through a canopy of dense forest. 
Explain it. 
b) Give any two examples of colloids. 
 
 
 
 
10. a) Blood is called a fluid connective tissue? State reason. 
b) Name the various components of blood. 
c) State the main function of blood. 
11. Draw a plant cell and lebel. 
a) Two cell organelles that contain their own genetic material 
b) The organelles where protein synthesis occurs 
12. a) Is it possible that the train in which you are sitting appears to move while it is at rest? 
b) Can the train appear to be at rest while moving? Justify your answers. 
13. Find the weight of an object at a height 6400 km above the earth’s surface. The weight of the 
object at the surface of the earth is 20 N and the radius of the earth is 6,400 km. 
14. Is it possible for a body to have it velocity and acceleration pointing in opposite dierections? 
15.   
  
The velocity-time graph of a truck is plotted below. 
a) Calculate the magnitude of displacement of the truck in 15 seconds. 
b) During which part of the journey was the truck decelerating? 
c) Calculating the magnitude of average velocity of the truck. 
16. a) Define mass and weight. 
b) Write their SI units. 
c) distinguish between the two quantities. 
17. Kumar had just given class IX examination. During summer vacation he decided to visit his 
parental village. When he saw the condition of the natives he decided to help them. He tested 
the soil and found that the basic reason for low productivity was that the soil was deficient in 
nutrients.3 
a) How many nutrients are supplied by the soil to the plants? Classify them on the basis of 
the amount they are required. 
b) Which physiological process in plants are affected by deficiency of the nutrients? 
c) Write two values that motivated Kumar to help villagers. 
18. Differentiate between “capture fishing” and “culture fishing”? 
19. Identify the physical and chemical changes from the following- 
a) Heating the mixture of iron and Sulphur. 
b) Ripening of fruits 
c) Dissolution of salt in water 
d) Rusting of iron-chair 
e) Making egg omelets 
 
 
 
 
20. a) Define following terms: 
(i) fluidity 
(ii) diffusion 
b) Explain out of liquids and gases which will having more fluidity and why? 
21. Explain the significance of the following:- 
a) Hair like, structures on epidermal cells 
b) Epidermis has a thick waxy coating of cutin in desert plants 
c) Small pores in epidermis in cactus 
d) Presence of a chemical suberin in cork cells. 
22. a) Define momentum. Write its SI units 
b) Calculate the change in momentum of a car weighing 1500 kg, when its speed 
increases from  
21
36kmh to 
21
72kmh uniformly. 
23. a) Differentiate between acceleration due to gravity and universal gravitational constant. 
b) How does the force of gravity depend upon masses of body and distance between 
them? 
24. Explain Composite fish culture. How is it beneficial for fish production? 
Section B 
 
25. A student wants to test for the presence of metanil yellow adulterant in the given food 
material. What should be use from the following to obtain a positive result? 
a) Channadal and Iodine solution 
b) Potato and conc. hydrochloric acid 
c) Potato and iodine solution 
26. The presence of starch can be shown in which food material and using which reagent: 
a) Apple juice and Iodine solution 
b) Potato extract and safranin 
c) Apple juice and safranin 
d) Potato extract and Iodine solution 
27. When Iron filings and Sulphur power are heated strongly in a china dish, then it forms: 
a) An element 
b) A compound 
c) Homogeneous mixture 
d) Heterogeneous mixture 
28. On strongly heating a mixture of iron filling and Sulphur powder a black mass to formed due 
to the formation of 
 
Page 4


 
 
 
 
Summative Assessment-1 2014-2015 
 Science 
Class – IX 
 
 Time allowed: 3:00 hours                                Maximum Marks: 90 
 
 General Instructions: 
a) The question paper comprises of two sections, A and B. You are to attempt both the 
sections. 
b) All questions are compulsory. 
c) All questions of Section – A and Section – B are to be attempted separately. 
d) Q. No. 1 to 3 in Section A – 1 marks questions. These are to be answered in about one 
word or in one sentence. 
e) Q. No. 4 to 6 in Section A – 2 marks questions. These are to be answered in about 30 
words each. 
f) Q. No. 7 to 18 in Section A – 3 marks questions. These are to be answered in about 50 
words each. 
g) Q. No. 19 to 24 in Section A – 5 marks questions. These are to be answered in about 70 
words each. 
h) Q. No. 25 to 33 in Section B are MCQ based on practical skills. Each question is a 1 mark 
question. You are to select one most appropriate response out of the four provided to 
you.  
i) Question number 34 to 36 in Section – B are questions based on practical skills are two 
marks questions. 
 
 
Section A 
1. Name the muscular tissue whose cells are spindle shaded and uninucleate 
2. If the weight of a body on the earth is 6 N, what will be on the moon (Given that acceleration 
due to gravity on moon is one sixth of that on the earth) 
3. Write the formula to calculate the speed of a body moving along a circular path of radius ‘r’ 
(Time taken by the body to complete one revolution is ‘t’). 
4. How surface area and wind speed effects the rate of evaporation. Explain. 
5. What would happen if lysosomes did not have any enzymes in them? Explain. 
6. Lokesh saw many apples on the tree but was not able to pluck them. His friend asked him to 
shake the branches. While shaking few apples fell down. Explain. Why? 
7. You are provided a mixture of mustard oil and water. Name the technique to separate it and 
write the principle involved. Draw diagram of the technique used. 
8. a) Give an example where change in physical state occurs by change in pressure. 
b) State two factors which determine the rate of diffusion of a liquid in another liquid. 
9. a) Tyndall effect can be observed when sunlight passes through a canopy of dense forest. 
Explain it. 
b) Give any two examples of colloids. 
 
 
 
 
10. a) Blood is called a fluid connective tissue? State reason. 
b) Name the various components of blood. 
c) State the main function of blood. 
11. Draw a plant cell and lebel. 
a) Two cell organelles that contain their own genetic material 
b) The organelles where protein synthesis occurs 
12. a) Is it possible that the train in which you are sitting appears to move while it is at rest? 
b) Can the train appear to be at rest while moving? Justify your answers. 
13. Find the weight of an object at a height 6400 km above the earth’s surface. The weight of the 
object at the surface of the earth is 20 N and the radius of the earth is 6,400 km. 
14. Is it possible for a body to have it velocity and acceleration pointing in opposite dierections? 
15.   
  
The velocity-time graph of a truck is plotted below. 
a) Calculate the magnitude of displacement of the truck in 15 seconds. 
b) During which part of the journey was the truck decelerating? 
c) Calculating the magnitude of average velocity of the truck. 
16. a) Define mass and weight. 
b) Write their SI units. 
c) distinguish between the two quantities. 
17. Kumar had just given class IX examination. During summer vacation he decided to visit his 
parental village. When he saw the condition of the natives he decided to help them. He tested 
the soil and found that the basic reason for low productivity was that the soil was deficient in 
nutrients.3 
a) How many nutrients are supplied by the soil to the plants? Classify them on the basis of 
the amount they are required. 
b) Which physiological process in plants are affected by deficiency of the nutrients? 
c) Write two values that motivated Kumar to help villagers. 
18. Differentiate between “capture fishing” and “culture fishing”? 
19. Identify the physical and chemical changes from the following- 
a) Heating the mixture of iron and Sulphur. 
b) Ripening of fruits 
c) Dissolution of salt in water 
d) Rusting of iron-chair 
e) Making egg omelets 
 
 
 
 
20. a) Define following terms: 
(i) fluidity 
(ii) diffusion 
b) Explain out of liquids and gases which will having more fluidity and why? 
21. Explain the significance of the following:- 
a) Hair like, structures on epidermal cells 
b) Epidermis has a thick waxy coating of cutin in desert plants 
c) Small pores in epidermis in cactus 
d) Presence of a chemical suberin in cork cells. 
22. a) Define momentum. Write its SI units 
b) Calculate the change in momentum of a car weighing 1500 kg, when its speed 
increases from  
21
36kmh to 
21
72kmh uniformly. 
23. a) Differentiate between acceleration due to gravity and universal gravitational constant. 
b) How does the force of gravity depend upon masses of body and distance between 
them? 
24. Explain Composite fish culture. How is it beneficial for fish production? 
Section B 
 
25. A student wants to test for the presence of metanil yellow adulterant in the given food 
material. What should be use from the following to obtain a positive result? 
a) Channadal and Iodine solution 
b) Potato and conc. hydrochloric acid 
c) Potato and iodine solution 
26. The presence of starch can be shown in which food material and using which reagent: 
a) Apple juice and Iodine solution 
b) Potato extract and safranin 
c) Apple juice and safranin 
d) Potato extract and Iodine solution 
27. When Iron filings and Sulphur power are heated strongly in a china dish, then it forms: 
a) An element 
b) A compound 
c) Homogeneous mixture 
d) Heterogeneous mixture 
28. On strongly heating a mixture of iron filling and Sulphur powder a black mass to formed due 
to the formation of 
 
 
 
 
 
a) Hydrogen Sulphide 
b) Iron oxide 
c) Iron sulin tphide 
d) Sulphur dioxide   
29. On the following steps of heating apparatus identify, Y and X. 
 
a) Test tube  b) burner   c) burner 
b) Test tube   b) Burnner  c) test  huge cube 
c) Test tube holder b) test tube   c) burner 
d) Test blow   b)  test tube holder d) burner 
e) On the basis  
30. A student observe the following in  a temporary amount: 
a) Large irregular flat cells 
b) Dense cytomplasm 
c) Blue coloured dense nucleus in the centre 
d) Each cell bounded by a cell membrane 
The cell is  
a) Onion peel 
b) Parenchymatous cell 
c) Expithelial cells of human check cells 
d) Nerve cell 
31. In the following diagram; the correct labelling for A and B is: 
 
a) A – Nucleus  B – Dendrite 
b) A – dendrite B – Axom 
c) A – Axom B – nucleus 
d)  
Page 5


 
 
 
 
Summative Assessment-1 2014-2015 
 Science 
Class – IX 
 
 Time allowed: 3:00 hours                                Maximum Marks: 90 
 
 General Instructions: 
a) The question paper comprises of two sections, A and B. You are to attempt both the 
sections. 
b) All questions are compulsory. 
c) All questions of Section – A and Section – B are to be attempted separately. 
d) Q. No. 1 to 3 in Section A – 1 marks questions. These are to be answered in about one 
word or in one sentence. 
e) Q. No. 4 to 6 in Section A – 2 marks questions. These are to be answered in about 30 
words each. 
f) Q. No. 7 to 18 in Section A – 3 marks questions. These are to be answered in about 50 
words each. 
g) Q. No. 19 to 24 in Section A – 5 marks questions. These are to be answered in about 70 
words each. 
h) Q. No. 25 to 33 in Section B are MCQ based on practical skills. Each question is a 1 mark 
question. You are to select one most appropriate response out of the four provided to 
you.  
i) Question number 34 to 36 in Section – B are questions based on practical skills are two 
marks questions. 
 
 
Section A 
1. Name the muscular tissue whose cells are spindle shaded and uninucleate 
2. If the weight of a body on the earth is 6 N, what will be on the moon (Given that acceleration 
due to gravity on moon is one sixth of that on the earth) 
3. Write the formula to calculate the speed of a body moving along a circular path of radius ‘r’ 
(Time taken by the body to complete one revolution is ‘t’). 
4. How surface area and wind speed effects the rate of evaporation. Explain. 
5. What would happen if lysosomes did not have any enzymes in them? Explain. 
6. Lokesh saw many apples on the tree but was not able to pluck them. His friend asked him to 
shake the branches. While shaking few apples fell down. Explain. Why? 
7. You are provided a mixture of mustard oil and water. Name the technique to separate it and 
write the principle involved. Draw diagram of the technique used. 
8. a) Give an example where change in physical state occurs by change in pressure. 
b) State two factors which determine the rate of diffusion of a liquid in another liquid. 
9. a) Tyndall effect can be observed when sunlight passes through a canopy of dense forest. 
Explain it. 
b) Give any two examples of colloids. 
 
 
 
 
10. a) Blood is called a fluid connective tissue? State reason. 
b) Name the various components of blood. 
c) State the main function of blood. 
11. Draw a plant cell and lebel. 
a) Two cell organelles that contain their own genetic material 
b) The organelles where protein synthesis occurs 
12. a) Is it possible that the train in which you are sitting appears to move while it is at rest? 
b) Can the train appear to be at rest while moving? Justify your answers. 
13. Find the weight of an object at a height 6400 km above the earth’s surface. The weight of the 
object at the surface of the earth is 20 N and the radius of the earth is 6,400 km. 
14. Is it possible for a body to have it velocity and acceleration pointing in opposite dierections? 
15.   
  
The velocity-time graph of a truck is plotted below. 
a) Calculate the magnitude of displacement of the truck in 15 seconds. 
b) During which part of the journey was the truck decelerating? 
c) Calculating the magnitude of average velocity of the truck. 
16. a) Define mass and weight. 
b) Write their SI units. 
c) distinguish between the two quantities. 
17. Kumar had just given class IX examination. During summer vacation he decided to visit his 
parental village. When he saw the condition of the natives he decided to help them. He tested 
the soil and found that the basic reason for low productivity was that the soil was deficient in 
nutrients.3 
a) How many nutrients are supplied by the soil to the plants? Classify them on the basis of 
the amount they are required. 
b) Which physiological process in plants are affected by deficiency of the nutrients? 
c) Write two values that motivated Kumar to help villagers. 
18. Differentiate between “capture fishing” and “culture fishing”? 
19. Identify the physical and chemical changes from the following- 
a) Heating the mixture of iron and Sulphur. 
b) Ripening of fruits 
c) Dissolution of salt in water 
d) Rusting of iron-chair 
e) Making egg omelets 
 
 
 
 
20. a) Define following terms: 
(i) fluidity 
(ii) diffusion 
b) Explain out of liquids and gases which will having more fluidity and why? 
21. Explain the significance of the following:- 
a) Hair like, structures on epidermal cells 
b) Epidermis has a thick waxy coating of cutin in desert plants 
c) Small pores in epidermis in cactus 
d) Presence of a chemical suberin in cork cells. 
22. a) Define momentum. Write its SI units 
b) Calculate the change in momentum of a car weighing 1500 kg, when its speed 
increases from  
21
36kmh to 
21
72kmh uniformly. 
23. a) Differentiate between acceleration due to gravity and universal gravitational constant. 
b) How does the force of gravity depend upon masses of body and distance between 
them? 
24. Explain Composite fish culture. How is it beneficial for fish production? 
Section B 
 
25. A student wants to test for the presence of metanil yellow adulterant in the given food 
material. What should be use from the following to obtain a positive result? 
a) Channadal and Iodine solution 
b) Potato and conc. hydrochloric acid 
c) Potato and iodine solution 
26. The presence of starch can be shown in which food material and using which reagent: 
a) Apple juice and Iodine solution 
b) Potato extract and safranin 
c) Apple juice and safranin 
d) Potato extract and Iodine solution 
27. When Iron filings and Sulphur power are heated strongly in a china dish, then it forms: 
a) An element 
b) A compound 
c) Homogeneous mixture 
d) Heterogeneous mixture 
28. On strongly heating a mixture of iron filling and Sulphur powder a black mass to formed due 
to the formation of 
 
 
 
 
 
a) Hydrogen Sulphide 
b) Iron oxide 
c) Iron sulin tphide 
d) Sulphur dioxide   
29. On the following steps of heating apparatus identify, Y and X. 
 
a) Test tube  b) burner   c) burner 
b) Test tube   b) Burnner  c) test  huge cube 
c) Test tube holder b) test tube   c) burner 
d) Test blow   b)  test tube holder d) burner 
e) On the basis  
30. A student observe the following in  a temporary amount: 
a) Large irregular flat cells 
b) Dense cytomplasm 
c) Blue coloured dense nucleus in the centre 
d) Each cell bounded by a cell membrane 
The cell is  
a) Onion peel 
b) Parenchymatous cell 
c) Expithelial cells of human check cells 
d) Nerve cell 
31. In the following diagram; the correct labelling for A and B is: 
 
a) A – Nucleus  B – Dendrite 
b) A – dendrite B – Axom 
c) A – Axom B – nucleus 
d)  
 
 
 
 
32. Which of the following substance cannot be separated by the method of sublimation: 
a) Sodium chloride 
b) Ammonium chloride 
c) Camphor 
d) Iodine 
33. The direction of force of friction is: 
a) Opposite to the direction of force applied on body 
b) Same as the direction of force applied on body 
c) Direction not fixed 
d) Independent of force applied 
34. Identify two clear and transparent solutions from the following mixtures:- 
a) Milk and water 
b) Sugar and water 
c) Chalk powder and water 
d) Starch powder and water 
e) Glucose and water 
35. Graph for change of ice to steam is shown below. Observe the change of state from ice to 
water and water to steam and write two inferences. 
 
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