Science Past Year Paper SA-1(Set-6)- 2014, Class 9, CBSE | Extra Documents & Tests for Class 9 PDF Download

 Page 1


 
 
 
 
Summative Assessment – 1 2014 
 Science 
Class – IX 
 
 Time allowed: 3 hours                                Maximum Marks: 90 
 
General instructions:  
a) The question paper comprises of two Section, A and B. You are attempt both the setions. 
b) All questions are compulsory. 
c) There are 26 questions in total. Q. Nos. 1 to 3 carry 1 mark each, Q. nos. 4 to 6 carry 2 
marks each, Q. nos. 7 to 18 carry 3 marks each, Q. no. 19 to 24 carry 4 marks and Q. nos. 
25 to 33 in section-B are multiple choice questions based on practice skills. Each question is 
a one mark question. You are to select one most appropriate response out of the four 
provided to you. 
d) Question numbers 34 to 36 in section-B are based on practical skills are two marks 
questions. 
 
 
Section - A 
1. Name one element to the xylem which is living and one element in the phloem which is non-
living. 
2. A book of mass 2kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal 
table. What is the force required to keep the object moving with the same velocity? 
3. Define free-fall. 
4. We feel cool after doing vigorous exercise. Why? 
5. How do golgi apparatus help Endoplasmic Reticulum? 
6. A man was driving a car with velocity 50 km/h. He started applying brakes and said to his 
partner that the car is showing retardation. 
a) What is meant by retardation here? 
b) Write the values of initial and final velocities when the car stops. 
7. A) How can we say that sugar is a pure substance whereas milk is not. 
B) Which of the following materials fall in the category of a pure substance? 
a. Ice 
b. Iron 
c. Wood 
d. Brick 
8. A) Melting points of three solids A, B and C are 298K, 310K and 400K respectively. Arrange 
these in increasing order of force of attraction between the particles of solid. 
B) Write the full of (i) L.P.G  (ii) C.N.G 
9. A) On which factor does a solution said to be diluted or concentrated? 
Page 2


 
 
 
 
Summative Assessment – 1 2014 
 Science 
Class – IX 
 
 Time allowed: 3 hours                                Maximum Marks: 90 
 
General instructions:  
a) The question paper comprises of two Section, A and B. You are attempt both the setions. 
b) All questions are compulsory. 
c) There are 26 questions in total. Q. Nos. 1 to 3 carry 1 mark each, Q. nos. 4 to 6 carry 2 
marks each, Q. nos. 7 to 18 carry 3 marks each, Q. no. 19 to 24 carry 4 marks and Q. nos. 
25 to 33 in section-B are multiple choice questions based on practice skills. Each question is 
a one mark question. You are to select one most appropriate response out of the four 
provided to you. 
d) Question numbers 34 to 36 in section-B are based on practical skills are two marks 
questions. 
 
 
Section - A 
1. Name one element to the xylem which is living and one element in the phloem which is non-
living. 
2. A book of mass 2kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal 
table. What is the force required to keep the object moving with the same velocity? 
3. Define free-fall. 
4. We feel cool after doing vigorous exercise. Why? 
5. How do golgi apparatus help Endoplasmic Reticulum? 
6. A man was driving a car with velocity 50 km/h. He started applying brakes and said to his 
partner that the car is showing retardation. 
a) What is meant by retardation here? 
b) Write the values of initial and final velocities when the car stops. 
7. A) How can we say that sugar is a pure substance whereas milk is not. 
B) Which of the following materials fall in the category of a pure substance? 
a. Ice 
b. Iron 
c. Wood 
d. Brick 
8. A) Melting points of three solids A, B and C are 298K, 310K and 400K respectively. Arrange 
these in increasing order of force of attraction between the particles of solid. 
B) Write the full of (i) L.P.G  (ii) C.N.G 
9. A) On which factor does a solution said to be diluted or concentrated? 
 
 
 
 
B) What would be observed when a saturated solution of potassium chloride at 608C is 
allowed to cool at room temperature? 
C) Name the process involved in squeezing out water from wet clothes in washing machine 
10. Name any two cell organelles which are bound by a double layered membrane. Give one 
function of each. 
11. A) Why is connective tissue called so? 
B) What is the function of the areolar connective tissue? 
C) Which substance is present in the adipocyte? How does it help? 
12. A frog hops from point ‘A’ to point ‘B’, along a straight line path and then turns and hops to 
point ‘C’. 
 
a) What is the distance travelled by the frog? 
b) What is the magnitude and direction of displacement? 
13. A piece of stone is thrown vertically upwards. It reaches the maximum height in 3 seconds. If 
the acceleration of the stone be 
2
9.8ms
- directed towards the ground, calculate the initial 
velocity of the stone with which it is thrown upwards. Find the maximum height attained by 
it. 
14. Account for the following: 
a) The atmosphere of the earth does not escape into the space, but remains attached to the 
earth. 
b) The earth is not a perfect sphere. 
15. Derive first law of motion mathematically from the mathematical expression for the second 
law of motion. 
16. Describe the motion represented by the following displacement time graph: 
 
17. Mahinder had a very good harvest. His son Narinder who was studying in class IX asked his 
father to store the grains in gunny bags and spray insecticides and keep them in well 
ventilated dry warehouse. He told his father that during storage grains are subjected to 
spoilage and this loss is around 9.3% annually. 
a) List two factors which are responsible for loss of stored food grains. 
b) How these factors affect the produce? 
c) Write two values that inspired Narinder to help his father. 
18. How do insect pests harm crop plants? 
Page 3


 
 
 
 
Summative Assessment – 1 2014 
 Science 
Class – IX 
 
 Time allowed: 3 hours                                Maximum Marks: 90 
 
General instructions:  
a) The question paper comprises of two Section, A and B. You are attempt both the setions. 
b) All questions are compulsory. 
c) There are 26 questions in total. Q. Nos. 1 to 3 carry 1 mark each, Q. nos. 4 to 6 carry 2 
marks each, Q. nos. 7 to 18 carry 3 marks each, Q. no. 19 to 24 carry 4 marks and Q. nos. 
25 to 33 in section-B are multiple choice questions based on practice skills. Each question is 
a one mark question. You are to select one most appropriate response out of the four 
provided to you. 
d) Question numbers 34 to 36 in section-B are based on practical skills are two marks 
questions. 
 
 
Section - A 
1. Name one element to the xylem which is living and one element in the phloem which is non-
living. 
2. A book of mass 2kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal 
table. What is the force required to keep the object moving with the same velocity? 
3. Define free-fall. 
4. We feel cool after doing vigorous exercise. Why? 
5. How do golgi apparatus help Endoplasmic Reticulum? 
6. A man was driving a car with velocity 50 km/h. He started applying brakes and said to his 
partner that the car is showing retardation. 
a) What is meant by retardation here? 
b) Write the values of initial and final velocities when the car stops. 
7. A) How can we say that sugar is a pure substance whereas milk is not. 
B) Which of the following materials fall in the category of a pure substance? 
a. Ice 
b. Iron 
c. Wood 
d. Brick 
8. A) Melting points of three solids A, B and C are 298K, 310K and 400K respectively. Arrange 
these in increasing order of force of attraction between the particles of solid. 
B) Write the full of (i) L.P.G  (ii) C.N.G 
9. A) On which factor does a solution said to be diluted or concentrated? 
 
 
 
 
B) What would be observed when a saturated solution of potassium chloride at 608C is 
allowed to cool at room temperature? 
C) Name the process involved in squeezing out water from wet clothes in washing machine 
10. Name any two cell organelles which are bound by a double layered membrane. Give one 
function of each. 
11. A) Why is connective tissue called so? 
B) What is the function of the areolar connective tissue? 
C) Which substance is present in the adipocyte? How does it help? 
12. A frog hops from point ‘A’ to point ‘B’, along a straight line path and then turns and hops to 
point ‘C’. 
 
a) What is the distance travelled by the frog? 
b) What is the magnitude and direction of displacement? 
13. A piece of stone is thrown vertically upwards. It reaches the maximum height in 3 seconds. If 
the acceleration of the stone be 
2
9.8ms
- directed towards the ground, calculate the initial 
velocity of the stone with which it is thrown upwards. Find the maximum height attained by 
it. 
14. Account for the following: 
a) The atmosphere of the earth does not escape into the space, but remains attached to the 
earth. 
b) The earth is not a perfect sphere. 
15. Derive first law of motion mathematically from the mathematical expression for the second 
law of motion. 
16. Describe the motion represented by the following displacement time graph: 
 
17. Mahinder had a very good harvest. His son Narinder who was studying in class IX asked his 
father to store the grains in gunny bags and spray insecticides and keep them in well 
ventilated dry warehouse. He told his father that during storage grains are subjected to 
spoilage and this loss is around 9.3% annually. 
a) List two factors which are responsible for loss of stored food grains. 
b) How these factors affect the produce? 
c) Write two values that inspired Narinder to help his father. 
18. How do insect pests harm crop plants? 
 
 
 
 
19. A student was given the mixture of Iron filings and Sulphur. He was told to heat it and 
observe the following- 
a) What is the colour of the compound formed? 
b) Write the effect of magnet on it. 
c) Write the action of carbon disulphide on it. 
d) Describe the effect of adding dilute hydrochloric acid to it. Identify the gas and write its 
two properties 
20. A) Explain why temperature remains constant during inter conversion of states of matter. 
B) “Sublimation does not require heating”. Justify the statement giving one example. 
21. Name a connective tissue which is the hardest. What makes it so hard? List any three 
important functions of this tissue. 
22. A) Why is the weight of an object with mass 10 kg on moon and on earth? What is the 
relation between the value of g on earth and moon? (g on earth =
2
9.8ms
- ) 
B) Differentiate between mass and weight of a body. 
23. A) A motorcyclist riding motorcycle A is travelling at a speed of 20m/s applies the brakes 
and stops the motorcycle in 10s. Another motorcyclist B who is travelling at a speed of 5 m/s 
applies the brakes and stops the motorcycle in 20 s. Plot speed-time graph for the two 
motorcycles. Which of the two motorcycles travelled farther before it comes to a stop? 
B) A cyclist goes around a circular track once every 2 minutes. If radius of the circular track is 
110m. Calculate the speed of cyclist? 
24. Crop Protection Management includes protection from weeds, from insects, pests and 
disease. Describe briefly how the plants are protected from above mentioned unwanted 
agents. 
 
Section – B 
25. In a sample of food before testing for starch, food sample should be crushed so that: 
a) Heterogeneity is there 
b) Homogeneity is there 
c) Test is positive 
d) Enough sample is there 
26. Starch is not a stored form of carbohydrates found in: 
a) Animals  
b) Cereals 
c) Pulses 
d) Tubers 
27. A student by mistake mixed iron filing and sulphur powder. He wanted to separated them 
from each other. The method you would advise him to use is to dissolve the mixture in: 
a) Boiling water 
b) Cold water 
c) Carbon disuphide 
d) Kerosene 
Page 4


 
 
 
 
Summative Assessment – 1 2014 
 Science 
Class – IX 
 
 Time allowed: 3 hours                                Maximum Marks: 90 
 
General instructions:  
a) The question paper comprises of two Section, A and B. You are attempt both the setions. 
b) All questions are compulsory. 
c) There are 26 questions in total. Q. Nos. 1 to 3 carry 1 mark each, Q. nos. 4 to 6 carry 2 
marks each, Q. nos. 7 to 18 carry 3 marks each, Q. no. 19 to 24 carry 4 marks and Q. nos. 
25 to 33 in section-B are multiple choice questions based on practice skills. Each question is 
a one mark question. You are to select one most appropriate response out of the four 
provided to you. 
d) Question numbers 34 to 36 in section-B are based on practical skills are two marks 
questions. 
 
 
Section - A 
1. Name one element to the xylem which is living and one element in the phloem which is non-
living. 
2. A book of mass 2kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal 
table. What is the force required to keep the object moving with the same velocity? 
3. Define free-fall. 
4. We feel cool after doing vigorous exercise. Why? 
5. How do golgi apparatus help Endoplasmic Reticulum? 
6. A man was driving a car with velocity 50 km/h. He started applying brakes and said to his 
partner that the car is showing retardation. 
a) What is meant by retardation here? 
b) Write the values of initial and final velocities when the car stops. 
7. A) How can we say that sugar is a pure substance whereas milk is not. 
B) Which of the following materials fall in the category of a pure substance? 
a. Ice 
b. Iron 
c. Wood 
d. Brick 
8. A) Melting points of three solids A, B and C are 298K, 310K and 400K respectively. Arrange 
these in increasing order of force of attraction between the particles of solid. 
B) Write the full of (i) L.P.G  (ii) C.N.G 
9. A) On which factor does a solution said to be diluted or concentrated? 
 
 
 
 
B) What would be observed when a saturated solution of potassium chloride at 608C is 
allowed to cool at room temperature? 
C) Name the process involved in squeezing out water from wet clothes in washing machine 
10. Name any two cell organelles which are bound by a double layered membrane. Give one 
function of each. 
11. A) Why is connective tissue called so? 
B) What is the function of the areolar connective tissue? 
C) Which substance is present in the adipocyte? How does it help? 
12. A frog hops from point ‘A’ to point ‘B’, along a straight line path and then turns and hops to 
point ‘C’. 
 
a) What is the distance travelled by the frog? 
b) What is the magnitude and direction of displacement? 
13. A piece of stone is thrown vertically upwards. It reaches the maximum height in 3 seconds. If 
the acceleration of the stone be 
2
9.8ms
- directed towards the ground, calculate the initial 
velocity of the stone with which it is thrown upwards. Find the maximum height attained by 
it. 
14. Account for the following: 
a) The atmosphere of the earth does not escape into the space, but remains attached to the 
earth. 
b) The earth is not a perfect sphere. 
15. Derive first law of motion mathematically from the mathematical expression for the second 
law of motion. 
16. Describe the motion represented by the following displacement time graph: 
 
17. Mahinder had a very good harvest. His son Narinder who was studying in class IX asked his 
father to store the grains in gunny bags and spray insecticides and keep them in well 
ventilated dry warehouse. He told his father that during storage grains are subjected to 
spoilage and this loss is around 9.3% annually. 
a) List two factors which are responsible for loss of stored food grains. 
b) How these factors affect the produce? 
c) Write two values that inspired Narinder to help his father. 
18. How do insect pests harm crop plants? 
 
 
 
 
19. A student was given the mixture of Iron filings and Sulphur. He was told to heat it and 
observe the following- 
a) What is the colour of the compound formed? 
b) Write the effect of magnet on it. 
c) Write the action of carbon disulphide on it. 
d) Describe the effect of adding dilute hydrochloric acid to it. Identify the gas and write its 
two properties 
20. A) Explain why temperature remains constant during inter conversion of states of matter. 
B) “Sublimation does not require heating”. Justify the statement giving one example. 
21. Name a connective tissue which is the hardest. What makes it so hard? List any three 
important functions of this tissue. 
22. A) Why is the weight of an object with mass 10 kg on moon and on earth? What is the 
relation between the value of g on earth and moon? (g on earth =
2
9.8ms
- ) 
B) Differentiate between mass and weight of a body. 
23. A) A motorcyclist riding motorcycle A is travelling at a speed of 20m/s applies the brakes 
and stops the motorcycle in 10s. Another motorcyclist B who is travelling at a speed of 5 m/s 
applies the brakes and stops the motorcycle in 20 s. Plot speed-time graph for the two 
motorcycles. Which of the two motorcycles travelled farther before it comes to a stop? 
B) A cyclist goes around a circular track once every 2 minutes. If radius of the circular track is 
110m. Calculate the speed of cyclist? 
24. Crop Protection Management includes protection from weeds, from insects, pests and 
disease. Describe briefly how the plants are protected from above mentioned unwanted 
agents. 
 
Section – B 
25. In a sample of food before testing for starch, food sample should be crushed so that: 
a) Heterogeneity is there 
b) Homogeneity is there 
c) Test is positive 
d) Enough sample is there 
26. Starch is not a stored form of carbohydrates found in: 
a) Animals  
b) Cereals 
c) Pulses 
d) Tubers 
27. A student by mistake mixed iron filing and sulphur powder. He wanted to separated them 
from each other. The method you would advise him to use is to dissolve the mixture in: 
a) Boiling water 
b) Cold water 
c) Carbon disuphide 
d) Kerosene 
 
 
 
 
28. Carbon disulphide should be kept away from the flame as: 
a) It is a toxic liquid. 
b) It is a supporter of combustion. 
c) It is a combustible liquid. 
d) It is corrosive. 
29. Following are steps taken for performing the reaction between copper sulphate and Iron are: 
(i) Prepare copper sulphate solution by dissolving a few crystals of copper sulphate on 
water 
(ii) Put some iron nails in it 
(iii) Leave it for 5 minutes 
(iv) Observe the change in colour of solutions 
(v) Take out the iron nails and observe for any deposit on it 
 
The correct result of above experiment is not as expected identify the step that is missing out 
of the following: 
a) Heat copper sulphate solution before putting iron nails 
b) Cool copper sulphate solution before putting iron nails 
c) Rub the iron nail with sand paper 
d) Close the test tube with a cork 
30. The chemicals used for staining during the preparation of a slide of onion peel cells are: 
a) Iodine solution, safranin, glycerine 
b) Safranin, alcohol, glycerine 
c) Iodine solution, alcohol, safranin 
d) Safranin and glycerine 
31. When stained appropriately, the muscle which shows alternate light and dark bands is: 
a) Striated 
b) Smooth 
c) Cardiac 
d) Unstriated 
32. The sublimation process requires a funnel and cotton piece. The reason is that it becomes: 
a) Easy to collect the sublimate 
b) Easy to heat it 
c) Easy to transport it 
d) Easy to evaporate it 
33. An object of mass 5 kg is moving with a constant velocity on a frictionless surface. Force 
required to maintain the velocity will be: 
a) 5 N 
b) 50 N 
c) 0.5 N 
d) 0 N 
Page 5


 
 
 
 
Summative Assessment – 1 2014 
 Science 
Class – IX 
 
 Time allowed: 3 hours                                Maximum Marks: 90 
 
General instructions:  
a) The question paper comprises of two Section, A and B. You are attempt both the setions. 
b) All questions are compulsory. 
c) There are 26 questions in total. Q. Nos. 1 to 3 carry 1 mark each, Q. nos. 4 to 6 carry 2 
marks each, Q. nos. 7 to 18 carry 3 marks each, Q. no. 19 to 24 carry 4 marks and Q. nos. 
25 to 33 in section-B are multiple choice questions based on practice skills. Each question is 
a one mark question. You are to select one most appropriate response out of the four 
provided to you. 
d) Question numbers 34 to 36 in section-B are based on practical skills are two marks 
questions. 
 
 
Section - A 
1. Name one element to the xylem which is living and one element in the phloem which is non-
living. 
2. A book of mass 2kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal 
table. What is the force required to keep the object moving with the same velocity? 
3. Define free-fall. 
4. We feel cool after doing vigorous exercise. Why? 
5. How do golgi apparatus help Endoplasmic Reticulum? 
6. A man was driving a car with velocity 50 km/h. He started applying brakes and said to his 
partner that the car is showing retardation. 
a) What is meant by retardation here? 
b) Write the values of initial and final velocities when the car stops. 
7. A) How can we say that sugar is a pure substance whereas milk is not. 
B) Which of the following materials fall in the category of a pure substance? 
a. Ice 
b. Iron 
c. Wood 
d. Brick 
8. A) Melting points of three solids A, B and C are 298K, 310K and 400K respectively. Arrange 
these in increasing order of force of attraction between the particles of solid. 
B) Write the full of (i) L.P.G  (ii) C.N.G 
9. A) On which factor does a solution said to be diluted or concentrated? 
 
 
 
 
B) What would be observed when a saturated solution of potassium chloride at 608C is 
allowed to cool at room temperature? 
C) Name the process involved in squeezing out water from wet clothes in washing machine 
10. Name any two cell organelles which are bound by a double layered membrane. Give one 
function of each. 
11. A) Why is connective tissue called so? 
B) What is the function of the areolar connective tissue? 
C) Which substance is present in the adipocyte? How does it help? 
12. A frog hops from point ‘A’ to point ‘B’, along a straight line path and then turns and hops to 
point ‘C’. 
 
a) What is the distance travelled by the frog? 
b) What is the magnitude and direction of displacement? 
13. A piece of stone is thrown vertically upwards. It reaches the maximum height in 3 seconds. If 
the acceleration of the stone be 
2
9.8ms
- directed towards the ground, calculate the initial 
velocity of the stone with which it is thrown upwards. Find the maximum height attained by 
it. 
14. Account for the following: 
a) The atmosphere of the earth does not escape into the space, but remains attached to the 
earth. 
b) The earth is not a perfect sphere. 
15. Derive first law of motion mathematically from the mathematical expression for the second 
law of motion. 
16. Describe the motion represented by the following displacement time graph: 
 
17. Mahinder had a very good harvest. His son Narinder who was studying in class IX asked his 
father to store the grains in gunny bags and spray insecticides and keep them in well 
ventilated dry warehouse. He told his father that during storage grains are subjected to 
spoilage and this loss is around 9.3% annually. 
a) List two factors which are responsible for loss of stored food grains. 
b) How these factors affect the produce? 
c) Write two values that inspired Narinder to help his father. 
18. How do insect pests harm crop plants? 
 
 
 
 
19. A student was given the mixture of Iron filings and Sulphur. He was told to heat it and 
observe the following- 
a) What is the colour of the compound formed? 
b) Write the effect of magnet on it. 
c) Write the action of carbon disulphide on it. 
d) Describe the effect of adding dilute hydrochloric acid to it. Identify the gas and write its 
two properties 
20. A) Explain why temperature remains constant during inter conversion of states of matter. 
B) “Sublimation does not require heating”. Justify the statement giving one example. 
21. Name a connective tissue which is the hardest. What makes it so hard? List any three 
important functions of this tissue. 
22. A) Why is the weight of an object with mass 10 kg on moon and on earth? What is the 
relation between the value of g on earth and moon? (g on earth =
2
9.8ms
- ) 
B) Differentiate between mass and weight of a body. 
23. A) A motorcyclist riding motorcycle A is travelling at a speed of 20m/s applies the brakes 
and stops the motorcycle in 10s. Another motorcyclist B who is travelling at a speed of 5 m/s 
applies the brakes and stops the motorcycle in 20 s. Plot speed-time graph for the two 
motorcycles. Which of the two motorcycles travelled farther before it comes to a stop? 
B) A cyclist goes around a circular track once every 2 minutes. If radius of the circular track is 
110m. Calculate the speed of cyclist? 
24. Crop Protection Management includes protection from weeds, from insects, pests and 
disease. Describe briefly how the plants are protected from above mentioned unwanted 
agents. 
 
Section – B 
25. In a sample of food before testing for starch, food sample should be crushed so that: 
a) Heterogeneity is there 
b) Homogeneity is there 
c) Test is positive 
d) Enough sample is there 
26. Starch is not a stored form of carbohydrates found in: 
a) Animals  
b) Cereals 
c) Pulses 
d) Tubers 
27. A student by mistake mixed iron filing and sulphur powder. He wanted to separated them 
from each other. The method you would advise him to use is to dissolve the mixture in: 
a) Boiling water 
b) Cold water 
c) Carbon disuphide 
d) Kerosene 
 
 
 
 
28. Carbon disulphide should be kept away from the flame as: 
a) It is a toxic liquid. 
b) It is a supporter of combustion. 
c) It is a combustible liquid. 
d) It is corrosive. 
29. Following are steps taken for performing the reaction between copper sulphate and Iron are: 
(i) Prepare copper sulphate solution by dissolving a few crystals of copper sulphate on 
water 
(ii) Put some iron nails in it 
(iii) Leave it for 5 minutes 
(iv) Observe the change in colour of solutions 
(v) Take out the iron nails and observe for any deposit on it 
 
The correct result of above experiment is not as expected identify the step that is missing out 
of the following: 
a) Heat copper sulphate solution before putting iron nails 
b) Cool copper sulphate solution before putting iron nails 
c) Rub the iron nail with sand paper 
d) Close the test tube with a cork 
30. The chemicals used for staining during the preparation of a slide of onion peel cells are: 
a) Iodine solution, safranin, glycerine 
b) Safranin, alcohol, glycerine 
c) Iodine solution, alcohol, safranin 
d) Safranin and glycerine 
31. When stained appropriately, the muscle which shows alternate light and dark bands is: 
a) Striated 
b) Smooth 
c) Cardiac 
d) Unstriated 
32. The sublimation process requires a funnel and cotton piece. The reason is that it becomes: 
a) Easy to collect the sublimate 
b) Easy to heat it 
c) Easy to transport it 
d) Easy to evaporate it 
33. An object of mass 5 kg is moving with a constant velocity on a frictionless surface. Force 
required to maintain the velocity will be: 
a) 5 N 
b) 50 N 
c) 0.5 N 
d) 0 N 
 
 
 
 
34. A mixture of sand, powdered glass and common salt is dissolved in water and then filtered. 
Name the substance left on filter paper. Name the substance in the filtrate. 
35. Study the temperature-time graph given below. This graph shows heating of ice from 10 C - °
to water at 100 C ° . Represent the change of state on heating. During change of state where 
does the heat energy go? What is this heat called? 
 
36. Parkash soaked 6g raisins in water and after 10 hours found that their mass has become 9g. 
determine the percentage of water absorbed by raisins.