Class 9 Science: Sample Practice Question Paper- 9 PDF Download

 Page 1


  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
CBSE 
Class IX Science 
   Sample Paper – 9 
Time: 3 hrs Total Marks: 80 
 
General Instructions: 
? The question paper comprises five sections – A, B, C, D and E. You are to attempt all the 
sections. 
? All questions are compulsory. 
? Internal choice is given in sections B, C, D and E. 
? Question numbers 1 and 2 in Section A are one mark questions. They are to be answered 
in one word or in one sentence. 
? Question numbers 3 to 5 in Section B are two marks questions. These are to be answered 
in about 30 words each. 
? Question numbers 6 to 15 in Section C are three marks questions. These are to be 
answered in about 50 words each. 
? Question numbers 16 to 21 in Section D are five marks questions. These are to be 
answered in about 70 words each. 
? Question numbers 22 to 27 in Section E are based on practical skills. Each question is a 
two marks question. These are to be answered in brief. 
 
 
Section A 
 
1. What is leghaemoglobin? (1) 
 
2. Name one macronutrient and micronutrient which plants absorb from the soil. (1) 
 
Section B 
 (2) 
3. Explain the atomicity shown by noble gases. 
 
OR 
 
Write the chemical formulae of the following compounds: 
i. Ammonium sulphate 
ii. Magnesium carbonate 
 
4. If 10 sound waves are produced per second, what is the time period in seconds? (2) 
5. Why are branches of a tree able to move and bend freely despite high winds? (2) 
 
Page 2


  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
CBSE 
Class IX Science 
   Sample Paper – 9 
Time: 3 hrs Total Marks: 80 
 
General Instructions: 
? The question paper comprises five sections – A, B, C, D and E. You are to attempt all the 
sections. 
? All questions are compulsory. 
? Internal choice is given in sections B, C, D and E. 
? Question numbers 1 and 2 in Section A are one mark questions. They are to be answered 
in one word or in one sentence. 
? Question numbers 3 to 5 in Section B are two marks questions. These are to be answered 
in about 30 words each. 
? Question numbers 6 to 15 in Section C are three marks questions. These are to be 
answered in about 50 words each. 
? Question numbers 16 to 21 in Section D are five marks questions. These are to be 
answered in about 70 words each. 
? Question numbers 22 to 27 in Section E are based on practical skills. Each question is a 
two marks question. These are to be answered in brief. 
 
 
Section A 
 
1. What is leghaemoglobin? (1) 
 
2. Name one macronutrient and micronutrient which plants absorb from the soil. (1) 
 
Section B 
 (2) 
3. Explain the atomicity shown by noble gases. 
 
OR 
 
Write the chemical formulae of the following compounds: 
i. Ammonium sulphate 
ii. Magnesium carbonate 
 
4. If 10 sound waves are produced per second, what is the time period in seconds? (2) 
5. Why are branches of a tree able to move and bend freely despite high winds? (2) 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
Section C 
 
6. Name the following: (3) 
(a) Cell organelle which permits selective entry and exit of materials in cells. 
(b) Solution in which solute concentration is more than that inside the cell. 
(c) Fibrous polysaccharide which constitutes the cell wall. 
 
7. Draw a diagram of Hydra and label the following parts: (3) 
Tentacles, stinging cells, gastrovascular cavity, epidermis 
 
OR 
 
 List in the tabular form three distinguishing features of gymnosperms and angiosperms. 
 
8. A man throws a ball weighing 400 g in the upward direction:  (3) 
i) What will be its initial momentum? 
ii) What will be its momentum at the highest point of its flight?  
 
OR 
 
A girl of mass 40 kg jumps with a horizontal velocity of 5 ms
-1
 onto a stationary cart with 
frictionless wheels. The mass of the cart is 3 kg. What is her velocity as the cart starts 
moving?                              (3) 
 
9. Explain why an alloy is considered a mixture. (3) 
 
10. List some factors for which variety improvement is performed in crops. (3) 
 
11. Give reasons:                                                                                                   (3) 
(a) Echidna and Platypus lay eggs but are still considered mammals. 
(b) Crocodile has a four-chambered heart but is still a reptile. 
(c) Birds have pneumatic bones. 
   
12. Which has lesser number of atoms and moles, 50 g of iron or 50 g of sodium? (3)      
 
OR 
 
A 0.24 g sample of a compound of oxygen and boron was found by analysis to contain 
0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the 
compound by weight. 
  
Page 3


  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
CBSE 
Class IX Science 
   Sample Paper – 9 
Time: 3 hrs Total Marks: 80 
 
General Instructions: 
? The question paper comprises five sections – A, B, C, D and E. You are to attempt all the 
sections. 
? All questions are compulsory. 
? Internal choice is given in sections B, C, D and E. 
? Question numbers 1 and 2 in Section A are one mark questions. They are to be answered 
in one word or in one sentence. 
? Question numbers 3 to 5 in Section B are two marks questions. These are to be answered 
in about 30 words each. 
? Question numbers 6 to 15 in Section C are three marks questions. These are to be 
answered in about 50 words each. 
? Question numbers 16 to 21 in Section D are five marks questions. These are to be 
answered in about 70 words each. 
? Question numbers 22 to 27 in Section E are based on practical skills. Each question is a 
two marks question. These are to be answered in brief. 
 
 
Section A 
 
1. What is leghaemoglobin? (1) 
 
2. Name one macronutrient and micronutrient which plants absorb from the soil. (1) 
 
Section B 
 (2) 
3. Explain the atomicity shown by noble gases. 
 
OR 
 
Write the chemical formulae of the following compounds: 
i. Ammonium sulphate 
ii. Magnesium carbonate 
 
4. If 10 sound waves are produced per second, what is the time period in seconds? (2) 
5. Why are branches of a tree able to move and bend freely despite high winds? (2) 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
Section C 
 
6. Name the following: (3) 
(a) Cell organelle which permits selective entry and exit of materials in cells. 
(b) Solution in which solute concentration is more than that inside the cell. 
(c) Fibrous polysaccharide which constitutes the cell wall. 
 
7. Draw a diagram of Hydra and label the following parts: (3) 
Tentacles, stinging cells, gastrovascular cavity, epidermis 
 
OR 
 
 List in the tabular form three distinguishing features of gymnosperms and angiosperms. 
 
8. A man throws a ball weighing 400 g in the upward direction:  (3) 
i) What will be its initial momentum? 
ii) What will be its momentum at the highest point of its flight?  
 
OR 
 
A girl of mass 40 kg jumps with a horizontal velocity of 5 ms
-1
 onto a stationary cart with 
frictionless wheels. The mass of the cart is 3 kg. What is her velocity as the cart starts 
moving?                              (3) 
 
9. Explain why an alloy is considered a mixture. (3) 
 
10. List some factors for which variety improvement is performed in crops. (3) 
 
11. Give reasons:                                                                                                   (3) 
(a) Echidna and Platypus lay eggs but are still considered mammals. 
(b) Crocodile has a four-chambered heart but is still a reptile. 
(c) Birds have pneumatic bones. 
   
12. Which has lesser number of atoms and moles, 50 g of iron or 50 g of sodium? (3)      
 
OR 
 
A 0.24 g sample of a compound of oxygen and boron was found by analysis to contain 
0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the 
compound by weight. 
  
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
13.   (3) 
(a) Differentiate between evaporation and boiling. 
(b) List the factors which affect the rate of evaporation and explain their effect on it. 
14. Why is it said that a man carrying a suitcase is not doing any work with respect to gravity? (3) 
 
15. Answer the following questions from the given speed–time graph:            (3) 
 
i) What type of motion is represented by OA? 
ii) Find the acceleration of the body. 
iii) What is the distance travelled in 12 seconds? 
 
Section D 
  
16.  (5) 
(a) List the postulates of Thomson's model of an atom. 
(b) What are the properties of electrons?  
OR 
The atomic number of chlorine is 17 and its mass number is 35. 
(i) What is the electronic configuration of a negatively charged chlorine ion, Cl
-
? 
(ii) What is the atomic number and mass number of Cl
-
? 
(iii) Define valency, and calculate the valency of Cl
-
.   
 
17.  (5) 
(a) Describe the oxygen cycle with the help of a diagram. 
(b) How does depletion of the ozone layer take place? 
 
OR 
 
(a) What are the consequences of global warming? 
(b) Draw a labelled diagram to show the water cycle in nature. 
(c) Why is water essential for life? 
 
 
 
 
Page 4


  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
CBSE 
Class IX Science 
   Sample Paper – 9 
Time: 3 hrs Total Marks: 80 
 
General Instructions: 
? The question paper comprises five sections – A, B, C, D and E. You are to attempt all the 
sections. 
? All questions are compulsory. 
? Internal choice is given in sections B, C, D and E. 
? Question numbers 1 and 2 in Section A are one mark questions. They are to be answered 
in one word or in one sentence. 
? Question numbers 3 to 5 in Section B are two marks questions. These are to be answered 
in about 30 words each. 
? Question numbers 6 to 15 in Section C are three marks questions. These are to be 
answered in about 50 words each. 
? Question numbers 16 to 21 in Section D are five marks questions. These are to be 
answered in about 70 words each. 
? Question numbers 22 to 27 in Section E are based on practical skills. Each question is a 
two marks question. These are to be answered in brief. 
 
 
Section A 
 
1. What is leghaemoglobin? (1) 
 
2. Name one macronutrient and micronutrient which plants absorb from the soil. (1) 
 
Section B 
 (2) 
3. Explain the atomicity shown by noble gases. 
 
OR 
 
Write the chemical formulae of the following compounds: 
i. Ammonium sulphate 
ii. Magnesium carbonate 
 
4. If 10 sound waves are produced per second, what is the time period in seconds? (2) 
5. Why are branches of a tree able to move and bend freely despite high winds? (2) 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
Section C 
 
6. Name the following: (3) 
(a) Cell organelle which permits selective entry and exit of materials in cells. 
(b) Solution in which solute concentration is more than that inside the cell. 
(c) Fibrous polysaccharide which constitutes the cell wall. 
 
7. Draw a diagram of Hydra and label the following parts: (3) 
Tentacles, stinging cells, gastrovascular cavity, epidermis 
 
OR 
 
 List in the tabular form three distinguishing features of gymnosperms and angiosperms. 
 
8. A man throws a ball weighing 400 g in the upward direction:  (3) 
i) What will be its initial momentum? 
ii) What will be its momentum at the highest point of its flight?  
 
OR 
 
A girl of mass 40 kg jumps with a horizontal velocity of 5 ms
-1
 onto a stationary cart with 
frictionless wheels. The mass of the cart is 3 kg. What is her velocity as the cart starts 
moving?                              (3) 
 
9. Explain why an alloy is considered a mixture. (3) 
 
10. List some factors for which variety improvement is performed in crops. (3) 
 
11. Give reasons:                                                                                                   (3) 
(a) Echidna and Platypus lay eggs but are still considered mammals. 
(b) Crocodile has a four-chambered heart but is still a reptile. 
(c) Birds have pneumatic bones. 
   
12. Which has lesser number of atoms and moles, 50 g of iron or 50 g of sodium? (3)      
 
OR 
 
A 0.24 g sample of a compound of oxygen and boron was found by analysis to contain 
0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the 
compound by weight. 
  
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
13.   (3) 
(a) Differentiate between evaporation and boiling. 
(b) List the factors which affect the rate of evaporation and explain their effect on it. 
14. Why is it said that a man carrying a suitcase is not doing any work with respect to gravity? (3) 
 
15. Answer the following questions from the given speed–time graph:            (3) 
 
i) What type of motion is represented by OA? 
ii) Find the acceleration of the body. 
iii) What is the distance travelled in 12 seconds? 
 
Section D 
  
16.  (5) 
(a) List the postulates of Thomson's model of an atom. 
(b) What are the properties of electrons?  
OR 
The atomic number of chlorine is 17 and its mass number is 35. 
(i) What is the electronic configuration of a negatively charged chlorine ion, Cl
-
? 
(ii) What is the atomic number and mass number of Cl
-
? 
(iii) Define valency, and calculate the valency of Cl
-
.   
 
17.  (5) 
(a) Describe the oxygen cycle with the help of a diagram. 
(b) How does depletion of the ozone layer take place? 
 
OR 
 
(a) What are the consequences of global warming? 
(b) Draw a labelled diagram to show the water cycle in nature. 
(c) Why is water essential for life? 
 
 
 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
18.  (5) 
(i) A box is pulled across a floor by applying a force of 36 N at an angle of 45 ? above the 
horizontal. How much work is done by applying force in pulling the box to a distance of 
30 m? (given: 2 1.414) ? 
(ii) What happens to an inflated balloon whose mouth is untied and is released from the 
right side?  
19.  (5) 
(i) Define acceleration. Write the expression for it. 
(ii) A bus increases its speed from 10 m/s to 30 m/s in 15 seconds. What is its 
acceleration? 
(iii) What is positive and negative acceleration? 
 
OR 
 
A cyclist goes around a semi-circular track in 50 seconds. If the radius of the track is 150 
metres, calculate his speed. Also calculate the acceleration of the cycle if he starts from 
rest. 
 
20. Pragya tested the solubility of three substances at different temperatures and collected the 
data as given below (results are given in the following table, as grams of substance 
dissolved in 100 grams of water to form a saturated solution). (5) 
 
Substance dissolved Temperature (in K) 
 
     283             293               313              333              353 
Potassium nitrate 21 32 62 106 167 
Sodium chloride 36 36 36 37 37 
Potassium chloride 35 35 40 46 54 
Ammonium chloride 24 37 41 55 66 
 
(a) What mass of potassium nitrate would be needed to produce a saturated solution    
of potassium nitrate in 50 grams of water at 313 K? 
 
(b) Pragya makes a saturated solution of potassium chloride in water at 353 K and 
leaves the solution to cool at room temperature. What would she observe as the 
solution cools? Explain. 
 
(c) Find the solubility of each salt at 293 K. Which salt has the highest solubility at this 
temperature? 
 
(d)  What is the effect of change of temperature on the solubility of a salt? 
Page 5


  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
CBSE 
Class IX Science 
   Sample Paper – 9 
Time: 3 hrs Total Marks: 80 
 
General Instructions: 
? The question paper comprises five sections – A, B, C, D and E. You are to attempt all the 
sections. 
? All questions are compulsory. 
? Internal choice is given in sections B, C, D and E. 
? Question numbers 1 and 2 in Section A are one mark questions. They are to be answered 
in one word or in one sentence. 
? Question numbers 3 to 5 in Section B are two marks questions. These are to be answered 
in about 30 words each. 
? Question numbers 6 to 15 in Section C are three marks questions. These are to be 
answered in about 50 words each. 
? Question numbers 16 to 21 in Section D are five marks questions. These are to be 
answered in about 70 words each. 
? Question numbers 22 to 27 in Section E are based on practical skills. Each question is a 
two marks question. These are to be answered in brief. 
 
 
Section A 
 
1. What is leghaemoglobin? (1) 
 
2. Name one macronutrient and micronutrient which plants absorb from the soil. (1) 
 
Section B 
 (2) 
3. Explain the atomicity shown by noble gases. 
 
OR 
 
Write the chemical formulae of the following compounds: 
i. Ammonium sulphate 
ii. Magnesium carbonate 
 
4. If 10 sound waves are produced per second, what is the time period in seconds? (2) 
5. Why are branches of a tree able to move and bend freely despite high winds? (2) 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
Section C 
 
6. Name the following: (3) 
(a) Cell organelle which permits selective entry and exit of materials in cells. 
(b) Solution in which solute concentration is more than that inside the cell. 
(c) Fibrous polysaccharide which constitutes the cell wall. 
 
7. Draw a diagram of Hydra and label the following parts: (3) 
Tentacles, stinging cells, gastrovascular cavity, epidermis 
 
OR 
 
 List in the tabular form three distinguishing features of gymnosperms and angiosperms. 
 
8. A man throws a ball weighing 400 g in the upward direction:  (3) 
i) What will be its initial momentum? 
ii) What will be its momentum at the highest point of its flight?  
 
OR 
 
A girl of mass 40 kg jumps with a horizontal velocity of 5 ms
-1
 onto a stationary cart with 
frictionless wheels. The mass of the cart is 3 kg. What is her velocity as the cart starts 
moving?                              (3) 
 
9. Explain why an alloy is considered a mixture. (3) 
 
10. List some factors for which variety improvement is performed in crops. (3) 
 
11. Give reasons:                                                                                                   (3) 
(a) Echidna and Platypus lay eggs but are still considered mammals. 
(b) Crocodile has a four-chambered heart but is still a reptile. 
(c) Birds have pneumatic bones. 
   
12. Which has lesser number of atoms and moles, 50 g of iron or 50 g of sodium? (3)      
 
OR 
 
A 0.24 g sample of a compound of oxygen and boron was found by analysis to contain 
0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the 
compound by weight. 
  
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
13.   (3) 
(a) Differentiate between evaporation and boiling. 
(b) List the factors which affect the rate of evaporation and explain their effect on it. 
14. Why is it said that a man carrying a suitcase is not doing any work with respect to gravity? (3) 
 
15. Answer the following questions from the given speed–time graph:            (3) 
 
i) What type of motion is represented by OA? 
ii) Find the acceleration of the body. 
iii) What is the distance travelled in 12 seconds? 
 
Section D 
  
16.  (5) 
(a) List the postulates of Thomson's model of an atom. 
(b) What are the properties of electrons?  
OR 
The atomic number of chlorine is 17 and its mass number is 35. 
(i) What is the electronic configuration of a negatively charged chlorine ion, Cl
-
? 
(ii) What is the atomic number and mass number of Cl
-
? 
(iii) Define valency, and calculate the valency of Cl
-
.   
 
17.  (5) 
(a) Describe the oxygen cycle with the help of a diagram. 
(b) How does depletion of the ozone layer take place? 
 
OR 
 
(a) What are the consequences of global warming? 
(b) Draw a labelled diagram to show the water cycle in nature. 
(c) Why is water essential for life? 
 
 
 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
18.  (5) 
(i) A box is pulled across a floor by applying a force of 36 N at an angle of 45 ? above the 
horizontal. How much work is done by applying force in pulling the box to a distance of 
30 m? (given: 2 1.414) ? 
(ii) What happens to an inflated balloon whose mouth is untied and is released from the 
right side?  
19.  (5) 
(i) Define acceleration. Write the expression for it. 
(ii) A bus increases its speed from 10 m/s to 30 m/s in 15 seconds. What is its 
acceleration? 
(iii) What is positive and negative acceleration? 
 
OR 
 
A cyclist goes around a semi-circular track in 50 seconds. If the radius of the track is 150 
metres, calculate his speed. Also calculate the acceleration of the cycle if he starts from 
rest. 
 
20. Pragya tested the solubility of three substances at different temperatures and collected the 
data as given below (results are given in the following table, as grams of substance 
dissolved in 100 grams of water to form a saturated solution). (5) 
 
Substance dissolved Temperature (in K) 
 
     283             293               313              333              353 
Potassium nitrate 21 32 62 106 167 
Sodium chloride 36 36 36 37 37 
Potassium chloride 35 35 40 46 54 
Ammonium chloride 24 37 41 55 66 
 
(a) What mass of potassium nitrate would be needed to produce a saturated solution    
of potassium nitrate in 50 grams of water at 313 K? 
 
(b) Pragya makes a saturated solution of potassium chloride in water at 353 K and 
leaves the solution to cool at room temperature. What would she observe as the 
solution cools? Explain. 
 
(c) Find the solubility of each salt at 293 K. Which salt has the highest solubility at this 
temperature? 
 
(d)  What is the effect of change of temperature on the solubility of a salt? 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 9 
 
     
21. Prerna came to school one day with a running nose and reddish and watery eyes. She also 
kept coughing. She met Vidhi during the morning assembly who advised her to sit at a 
separate desk in the classroom till she recovers. (5) 
(a) Name the disease which Prerna is suffering from. 
(b) Name the causal organism. 
(c) List any two preventive measures for the disease. 
(d) What is your viewpoint on Vidhi’s advice? 
 
Section E 
 
22. Observe the figure carefully. (2) 
 
 
(a) Which of these organisms belong to Phylum Arthropoda? 
(b) Write any two striking features of Phylum Arthropoda. 
 
23. Observe the figure carefully. (2) 
 
(a) Identify the given specimen and the kingdom to which it belongs. 
(b) Label A, B and C. 
OR 
The teacher had shown Kriya a specimen R and asked her to find out if it is Spirogyra. 
(a) List any two features which will help Kriya to identify Spirogyra. 
(b) How does Spirogyra store food?  
 
24. State the correct method of separation for the following:  
(i) Mixture of nitre and common salt 
(ii) Mixture of camphor and salt  
(iii) Mixture of alcohol and water  
(iv) Cream from milk