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Science Class 9

Created by: Dr Manju Sen

Class 9 : Notes | EduRev

 Page 1


  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
CBSE 
Class IX Science 
Sample Paper - 10 
Time: 3 hrs Total Marks: 80 
 
• 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. Name two nitrogen compounds obtained by industrial fixation. (1) 
 
2. List two desirable traits for fodder crops. (1) 
 
Section B 
 
3. What are the different types of ions formed by iron? Give their names and valency. (2) 
 
4. A person fires a gun and its echo is heard after 3 s. Find the distance of the gunman from 
the cliff which produces the echo (speed of sound is 330 m/s). (2) 
 
5. Why striated muscles are also called voluntary and skeletal muscles? (2) 
 
OR 
 
Name the plant tissue found in the husk of coconut. Identify the chemical which is 
responsible for its stiffness. 
 
Page 2


  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
CBSE 
Class IX Science 
Sample Paper - 10 
Time: 3 hrs Total Marks: 80 
 
• 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. Name two nitrogen compounds obtained by industrial fixation. (1) 
 
2. List two desirable traits for fodder crops. (1) 
 
Section B 
 
3. What are the different types of ions formed by iron? Give their names and valency. (2) 
 
4. A person fires a gun and its echo is heard after 3 s. Find the distance of the gunman from 
the cliff which produces the echo (speed of sound is 330 m/s). (2) 
 
5. Why striated muscles are also called voluntary and skeletal muscles? (2) 
 
OR 
 
Name the plant tissue found in the husk of coconut. Identify the chemical which is 
responsible for its stiffness. 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
Section C 
 
6. State one function of the following nuclear parts:  (3) 
(a) Nuclear pore 
(b) Nuclear membrane 
(c) Chromosomes  
 
7. List three groups of vascular plants. Out of these, which group is further classified on the 
basis of number of cotyledons? State two of its characteristics.  (3) 
 
OR 
 List two differences and one similarity between Platyhelminths and Nematodes. 
 
8. Two cars of mass 750 kg and 1500 kg are required to be pushed by a person while the 
driver is accelerating the car. The force applied to both cars is the same. Find the relation 
between the accelerations of both cars. (3) 
OR 
 
       Prove the law of conservation of momentum with a clear explanation, diagram and  
       equation. 
 
9. ‘Water is a compound and not a mixture’. Justify this statement. (3) 
 
10. What harm can be caused to crops if they are excessively irrigated? (3) 
 
11. Identify the genus and species name in the scientific name of coconut, Cocos nucifera. How 
did you identify? (3) 
   
12. (a)How many grams of chlorine are contained in one mole of chlorine?  
(b)How many molecules are present in 1 g of chlorine?  
(Gram atomic mass of chlorine = 35.5 g) (3)      
OR 
 
The percentage of three elements calcium, carbon and oxygen in a sample of calcium 
carbonate is  
Calcium = 40%; Carbon = 12.0%; Oxygen = 48% 
If the law of constant proportions is true, what weights of these elements will be present 
in 1.5 g of another sample of calcium carbonate? 
 
Page 3


  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
CBSE 
Class IX Science 
Sample Paper - 10 
Time: 3 hrs Total Marks: 80 
 
• 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. Name two nitrogen compounds obtained by industrial fixation. (1) 
 
2. List two desirable traits for fodder crops. (1) 
 
Section B 
 
3. What are the different types of ions formed by iron? Give their names and valency. (2) 
 
4. A person fires a gun and its echo is heard after 3 s. Find the distance of the gunman from 
the cliff which produces the echo (speed of sound is 330 m/s). (2) 
 
5. Why striated muscles are also called voluntary and skeletal muscles? (2) 
 
OR 
 
Name the plant tissue found in the husk of coconut. Identify the chemical which is 
responsible for its stiffness. 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
Section C 
 
6. State one function of the following nuclear parts:  (3) 
(a) Nuclear pore 
(b) Nuclear membrane 
(c) Chromosomes  
 
7. List three groups of vascular plants. Out of these, which group is further classified on the 
basis of number of cotyledons? State two of its characteristics.  (3) 
 
OR 
 List two differences and one similarity between Platyhelminths and Nematodes. 
 
8. Two cars of mass 750 kg and 1500 kg are required to be pushed by a person while the 
driver is accelerating the car. The force applied to both cars is the same. Find the relation 
between the accelerations of both cars. (3) 
OR 
 
       Prove the law of conservation of momentum with a clear explanation, diagram and  
       equation. 
 
9. ‘Water is a compound and not a mixture’. Justify this statement. (3) 
 
10. What harm can be caused to crops if they are excessively irrigated? (3) 
 
11. Identify the genus and species name in the scientific name of coconut, Cocos nucifera. How 
did you identify? (3) 
   
12. (a)How many grams of chlorine are contained in one mole of chlorine?  
(b)How many molecules are present in 1 g of chlorine?  
(Gram atomic mass of chlorine = 35.5 g) (3)      
OR 
 
The percentage of three elements calcium, carbon and oxygen in a sample of calcium 
carbonate is  
Calcium = 40%; Carbon = 12.0%; Oxygen = 48% 
If the law of constant proportions is true, what weights of these elements will be present 
in 1.5 g of another sample of calcium carbonate? 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
13. What is buoyant force? What are the factors affecting the buoyant force? What is buoyant 
force also called?   (3) 
  
14. Neha and Rahul were performing an activity related to conservation of mass in their 
school Chemistry laboratory. They took barium chloride and sodium sulphate solutions 
and mixed them together. Rahul commented that since they already know the quantity of 
both compounds taken, they need not measure the amount of the final solution. But Neha 
insisted on measuring the amount of the final solution. (3) 
(a) Determine the molecular mass of 
? Barium chloride 
? Sodium sulphate 
(b) Comment on Neha’s insistence on measuring the amount of the final solution. 
 
15.  Define speed. Is it a scalar quantity or vector quantity?   (3) 
Give reason for your choice. 
 
Section D 
  
16.                                                                                                                                                                       (5) 
(a) What did Bohr contribute to the atomic structure?  
(b) Describe Bohr's model of an atom in detail with the help of a neat and labelled 
diagram.  
OR 
 
Give the atomic number of magnesium atom and magnesium ion; also diagrammatically 
show the electron distribution. 
 
17. Urbanisation and industrialisation are mainly responsible for the increase in 
environmental pollution. Justify this statement and suggest ways and means to keep it in 
check. (5) 
 
18.  (5) 
(i) Check the following cases and tell whether the work done is positive, negative or zero. 
Give reason for the same. 
a) A football moving in a certain direction is hit by the player along the direction of its 
motion. 
b) A metal bob tied to a thread is revolved continuously. 
c) A moving football stops due to the frictional force of the ground. 
(ii) State and explain Newton’s first law of motion. Explain using one example. 
 
 
 
Page 4


  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
CBSE 
Class IX Science 
Sample Paper - 10 
Time: 3 hrs Total Marks: 80 
 
• 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. Name two nitrogen compounds obtained by industrial fixation. (1) 
 
2. List two desirable traits for fodder crops. (1) 
 
Section B 
 
3. What are the different types of ions formed by iron? Give their names and valency. (2) 
 
4. A person fires a gun and its echo is heard after 3 s. Find the distance of the gunman from 
the cliff which produces the echo (speed of sound is 330 m/s). (2) 
 
5. Why striated muscles are also called voluntary and skeletal muscles? (2) 
 
OR 
 
Name the plant tissue found in the husk of coconut. Identify the chemical which is 
responsible for its stiffness. 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
Section C 
 
6. State one function of the following nuclear parts:  (3) 
(a) Nuclear pore 
(b) Nuclear membrane 
(c) Chromosomes  
 
7. List three groups of vascular plants. Out of these, which group is further classified on the 
basis of number of cotyledons? State two of its characteristics.  (3) 
 
OR 
 List two differences and one similarity between Platyhelminths and Nematodes. 
 
8. Two cars of mass 750 kg and 1500 kg are required to be pushed by a person while the 
driver is accelerating the car. The force applied to both cars is the same. Find the relation 
between the accelerations of both cars. (3) 
OR 
 
       Prove the law of conservation of momentum with a clear explanation, diagram and  
       equation. 
 
9. ‘Water is a compound and not a mixture’. Justify this statement. (3) 
 
10. What harm can be caused to crops if they are excessively irrigated? (3) 
 
11. Identify the genus and species name in the scientific name of coconut, Cocos nucifera. How 
did you identify? (3) 
   
12. (a)How many grams of chlorine are contained in one mole of chlorine?  
(b)How many molecules are present in 1 g of chlorine?  
(Gram atomic mass of chlorine = 35.5 g) (3)      
OR 
 
The percentage of three elements calcium, carbon and oxygen in a sample of calcium 
carbonate is  
Calcium = 40%; Carbon = 12.0%; Oxygen = 48% 
If the law of constant proportions is true, what weights of these elements will be present 
in 1.5 g of another sample of calcium carbonate? 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
13. What is buoyant force? What are the factors affecting the buoyant force? What is buoyant 
force also called?   (3) 
  
14. Neha and Rahul were performing an activity related to conservation of mass in their 
school Chemistry laboratory. They took barium chloride and sodium sulphate solutions 
and mixed them together. Rahul commented that since they already know the quantity of 
both compounds taken, they need not measure the amount of the final solution. But Neha 
insisted on measuring the amount of the final solution. (3) 
(a) Determine the molecular mass of 
? Barium chloride 
? Sodium sulphate 
(b) Comment on Neha’s insistence on measuring the amount of the final solution. 
 
15.  Define speed. Is it a scalar quantity or vector quantity?   (3) 
Give reason for your choice. 
 
Section D 
  
16.                                                                                                                                                                       (5) 
(a) What did Bohr contribute to the atomic structure?  
(b) Describe Bohr's model of an atom in detail with the help of a neat and labelled 
diagram.  
OR 
 
Give the atomic number of magnesium atom and magnesium ion; also diagrammatically 
show the electron distribution. 
 
17. Urbanisation and industrialisation are mainly responsible for the increase in 
environmental pollution. Justify this statement and suggest ways and means to keep it in 
check. (5) 
 
18.  (5) 
(i) Check the following cases and tell whether the work done is positive, negative or zero. 
Give reason for the same. 
a) A football moving in a certain direction is hit by the player along the direction of its 
motion. 
b) A metal bob tied to a thread is revolved continuously. 
c) A moving football stops due to the frictional force of the ground. 
(ii) State and explain Newton’s first law of motion. Explain using one example. 
 
 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
19.  (5) 
(i) Write the second kinematical equation of motion. 
(ii) An object is thrown upward to a certain height with a velocity of 3 m/s. If the time 
required to reach the height is 5 s, calculate the height at which it was thrown.  
 
OR 
 
The following is the graphical representation of cars A, B, C, D. Analyse the graph        
below and state which of the following statements are incorrect? If any particular 
statement is correct, give reason for it. 
a) Speed of Car D is the highest. 
b) Car A travels faster than Car B. 
c) Car A travels at the same speed as Car C. 
d) Speed of Car C is less. 
e) Car D is the slowest. 
 
 
20. How will you separate dyes in black ink using chromatography? 
Explain with the help of a diagram. (5) 
 
21. Piya’s gardener was coughing continuously for the last few days and was suffering from 
low grade fever. He was taking home remedial treatment. One day Piya’s physician visited 
their house. Piya got her gardener checked by the doctor. The gardener was advised to get 
a chest X ray and his sputum tested. (5) 
(a) Name the disease the gardener might be suffering from. 
(b) Name the causative organism of the disease. 
(c) Give two preventive measures for the disease. 
(d) Which two values were shown by Piya? 
 
OR 
 
(a) State the conditions essential for maintaining good health. 
(b) Why is AIDS considered a syndrome and not a disease? 
  
Page 5


  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
CBSE 
Class IX Science 
Sample Paper - 10 
Time: 3 hrs Total Marks: 80 
 
• 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. Name two nitrogen compounds obtained by industrial fixation. (1) 
 
2. List two desirable traits for fodder crops. (1) 
 
Section B 
 
3. What are the different types of ions formed by iron? Give their names and valency. (2) 
 
4. A person fires a gun and its echo is heard after 3 s. Find the distance of the gunman from 
the cliff which produces the echo (speed of sound is 330 m/s). (2) 
 
5. Why striated muscles are also called voluntary and skeletal muscles? (2) 
 
OR 
 
Name the plant tissue found in the husk of coconut. Identify the chemical which is 
responsible for its stiffness. 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
Section C 
 
6. State one function of the following nuclear parts:  (3) 
(a) Nuclear pore 
(b) Nuclear membrane 
(c) Chromosomes  
 
7. List three groups of vascular plants. Out of these, which group is further classified on the 
basis of number of cotyledons? State two of its characteristics.  (3) 
 
OR 
 List two differences and one similarity between Platyhelminths and Nematodes. 
 
8. Two cars of mass 750 kg and 1500 kg are required to be pushed by a person while the 
driver is accelerating the car. The force applied to both cars is the same. Find the relation 
between the accelerations of both cars. (3) 
OR 
 
       Prove the law of conservation of momentum with a clear explanation, diagram and  
       equation. 
 
9. ‘Water is a compound and not a mixture’. Justify this statement. (3) 
 
10. What harm can be caused to crops if they are excessively irrigated? (3) 
 
11. Identify the genus and species name in the scientific name of coconut, Cocos nucifera. How 
did you identify? (3) 
   
12. (a)How many grams of chlorine are contained in one mole of chlorine?  
(b)How many molecules are present in 1 g of chlorine?  
(Gram atomic mass of chlorine = 35.5 g) (3)      
OR 
 
The percentage of three elements calcium, carbon and oxygen in a sample of calcium 
carbonate is  
Calcium = 40%; Carbon = 12.0%; Oxygen = 48% 
If the law of constant proportions is true, what weights of these elements will be present 
in 1.5 g of another sample of calcium carbonate? 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
13. What is buoyant force? What are the factors affecting the buoyant force? What is buoyant 
force also called?   (3) 
  
14. Neha and Rahul were performing an activity related to conservation of mass in their 
school Chemistry laboratory. They took barium chloride and sodium sulphate solutions 
and mixed them together. Rahul commented that since they already know the quantity of 
both compounds taken, they need not measure the amount of the final solution. But Neha 
insisted on measuring the amount of the final solution. (3) 
(a) Determine the molecular mass of 
? Barium chloride 
? Sodium sulphate 
(b) Comment on Neha’s insistence on measuring the amount of the final solution. 
 
15.  Define speed. Is it a scalar quantity or vector quantity?   (3) 
Give reason for your choice. 
 
Section D 
  
16.                                                                                                                                                                       (5) 
(a) What did Bohr contribute to the atomic structure?  
(b) Describe Bohr's model of an atom in detail with the help of a neat and labelled 
diagram.  
OR 
 
Give the atomic number of magnesium atom and magnesium ion; also diagrammatically 
show the electron distribution. 
 
17. Urbanisation and industrialisation are mainly responsible for the increase in 
environmental pollution. Justify this statement and suggest ways and means to keep it in 
check. (5) 
 
18.  (5) 
(i) Check the following cases and tell whether the work done is positive, negative or zero. 
Give reason for the same. 
a) A football moving in a certain direction is hit by the player along the direction of its 
motion. 
b) A metal bob tied to a thread is revolved continuously. 
c) A moving football stops due to the frictional force of the ground. 
(ii) State and explain Newton’s first law of motion. Explain using one example. 
 
 
 
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
19.  (5) 
(i) Write the second kinematical equation of motion. 
(ii) An object is thrown upward to a certain height with a velocity of 3 m/s. If the time 
required to reach the height is 5 s, calculate the height at which it was thrown.  
 
OR 
 
The following is the graphical representation of cars A, B, C, D. Analyse the graph        
below and state which of the following statements are incorrect? If any particular 
statement is correct, give reason for it. 
a) Speed of Car D is the highest. 
b) Car A travels faster than Car B. 
c) Car A travels at the same speed as Car C. 
d) Speed of Car C is less. 
e) Car D is the slowest. 
 
 
20. How will you separate dyes in black ink using chromatography? 
Explain with the help of a diagram. (5) 
 
21. Piya’s gardener was coughing continuously for the last few days and was suffering from 
low grade fever. He was taking home remedial treatment. One day Piya’s physician visited 
their house. Piya got her gardener checked by the doctor. The gardener was advised to get 
a chest X ray and his sputum tested. (5) 
(a) Name the disease the gardener might be suffering from. 
(b) Name the causative organism of the disease. 
(c) Give two preventive measures for the disease. 
(d) Which two values were shown by Piya? 
 
OR 
 
(a) State the conditions essential for maintaining good health. 
(b) Why is AIDS considered a syndrome and not a disease? 
  
  
 
CBSE IX  |  SCIENCE 
Sample Paper – 10 
 
              
Section E 
 
22.  (2) 
(a) List any one plant with a tap root system. 
(b) Which type of plants have tap roots? List any two characteristics of such plants. 
 
OR 
 
Observe the specimen samples kept in the laboratory and answer the questions that 
follow: 
 
 
(a) Which of the above specimens have jointed appendages for locomotion?  
(b) List any two features which enable us to classify earthworm as annelid. 
 
23. The teacher showed a student the given specimen. (2) 
 
(a) Identify the specimen and the division to which it belongs. 
(b) Which features will help the student in the identification of the specimen?  
 
24. Observe the apparatus shown below and answer the following questions: (2) 
 
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