SUMMATIVE ASSESSMENT II, 2012 II, Class IX / IX

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: 3 hours Maximum Marks : 90 3 90 General

Only one option in such questions is to be

All questions of Section-A and all questions

Question numbers 1 to 3 in Section-A are one

These are to be answered in one word or in

Question numbers 4 to 7 in Section-A are two

These are to be answered in about 30 words

are three These are to be answered in about

Question numbers 20 to 24 in Section-A are

1 SUMMATIVE ASSESSMENT II, 2012 II, 2012 SCIENCE / Class IX / IX SC-1009 Time allowed : 3 hours Maximum Marks : General Instructions : (i) (ii) (iii) (iv) (v) (vi) (vii) (viii) (ix) The question paper comprises of two Sections, A and B. You are to attempt both the sections. All questions are compulsory. There is no overall choice. However, internal choice has been provided in all the five questions of five marks category. Only one option in such questions is to be attempted. All questions of Section-A and all questions of Section-B are to be attempted separately. Question numbers 1 to 3 in Section-A are one mark questions. These are to be answered in one word or in one sentence. Question numbers 4 to 7 in Section-A are two marks questions. These are to be answered in about 30 words each. Question numbers 8 to 19 in Section-A are three marks questions. These are to be answered in about 50 words each. Question numbers 20 to 24 in Section-A are five marks questions. These are to be answered in about 70 words each. Question numbers 25 to 42 in Section-B are multiple choice questions based on practical skills. Each question is a one mark question. You are to select one most appropriate response out of the four provided to you. (i) (ii) (iii) (iv) (v) 1 3 (vi) (vii) (viii) (ix) Page 2 of 14

Write the chemical formula of its chloride. X X 2 O 5 2.

What is conversion of ammonia into nitrates called? 4.

and the weight of the liquid displaced by it. 7.

Find kinetic energy of a body of mass 15 kg moving with a

Find the number of moles present in : 28 g of He 12.

2 SECTION-A / 1. The chemical formula of oxide of an element X is X 2 O 5. Write the chemical formula of its chloride. X X 2 O 5 2. State the phylum to which Liver Fluke and Planaria belong. 3. What is conversion of ammonia into nitrates called? 4. List in tabular form two differences between Amphibians and Reptiles. 5. List four preventive measures against communicable diseases. 6. What is meant by buoyant force? State the relationship between the buoyant force on an object and the weight of the liquid displaced by it. 7. What is the SI unit of kinetic energy? Find kinetic energy of a body of mass 15 kg moving with a velocity of 4 m/s. SI 4 m/s 15 kg 8. Find the number of moles present in : 28 g of He number of He atoms (Given that atomic mass of He 4. u ; Avogadros No per mole) 28 g of He He He 4 u ; No Write the names of three isotopes of hydrogen. State one use of isotope of uranium. Isotopes of an element have similar properties. Why? Page 3 of 14

10. State three features of the nuclear model of an atom put forward by Rutherford. 11.

List in tabular form any three distinguishing features between gymnosperms and angiosperms. 13.

State the pathogen and modes of transmission of this disease. 14.

If the density of the material of the cube is 10,000 kg/m 3 find the pressure exerted by the block on the table.

A body of mass 5 kg initially at rest is subjected to a force of 20N.

When do we say that the work is done by a force?

3 10. State three features of the nuclear model of an atom put forward by Rutherford. 11. List three characteristics of kingdom Monera. 12. List in tabular form any three distinguishing features between gymnosperms and angiosperms. 13. A person has lost his power to fight infections. Name the disease the person is suffering from. State the pathogen and modes of transmission of this disease. 14. A cubical block of side 2cm is lying on a table. If the density of the material of the cube is 10,000 kg/m 3 find the pressure exerted by the block on the table. ( g 10 m/s 2 ) 2 cm 10,000 kg/m 3 ( g 10 m/s 2 ) 15. A body of mass 5 kg initially at rest is subjected to a force of 20N. Find the kinetic energy acquired by the body at the end of 10s. 5 kg 20N 10s 16. When do we say that the work is done by a force? A porter lifts a luggage of 15 kg from the ground and puts it on the head 1.7 m above the ground. Find the work done by the porter on the luggage. ( g 10 m/s 2 ) 15 kg 1.7 m ( g 10 m/s 2 ) 17. Describe an activity to show that sound needs a material medium for its propagation. 18. How is atmosphere on our Earth different from the atmosphere on Venus and Mars? State two ways by which percentage of carbon dioxide is fixed on the earth. 19. List any three human activities that would lead to environmental pollution. Page 4 of 14

20. Define molecular mass of a substance. Find the relative molecular mass of : (i) CaCl 2 and (ii) HNO 3.

5 u ; H = 1 u ; N = 14 u ; O = 16 u) Calculate the number of particles in : (i) 8 g of O 2 molecules (ii) 46 g

Ca = 40 u ; Cl = 35.5 u ; H = 1 u ; N = 14 u ; O = 16 u) (i) 8 g O 2 (ii) 46 g O = 16 u; Na = 23 u; = 6.

(Avagadro No = 6.022 10 23 per mole) Calculate the mass of the following : (i) 0.5 mole of N 2 gas (ii) 0.

022 10 23 / mol ) 12 g = 6.022 10 23 (i) N 2 0.5 (ii) 0.2 (iii) 4 (Given N 14u : O 16u : Al = 27 u : 6.

4 20. Define molecular mass of a substance. Find the relative molecular mass of : (i) CaCl 2 and (ii) HNO 3. (Given Ca = 40 u ; Cl = 35.5 u ; H = 1 u ; N = 14 u ; O = 16 u) Calculate the number of particles in : (i) 8 g of O 2 molecules (ii) 46 g of sodium atoms (Given O = 16 u; Na = 23 u; Avagadros No = per mole) (i) CaCl 2 (ii) HNO 3. Ca = 40 u ; Cl = 35.5 u ; H = 1 u ; N = 14 u ; O = 16 u) (i) 8 g O 2 (ii) 46 g O = 16 u; Na = 23 u; = OR / One mole of carbon atoms weighs 12 g. Find the mass of 1 atom of carbon in grams. (Avagadro No = per mole) Calculate the mass of the following : (i) 0.5 mole of N 2 gas (ii) 0.2 mole of O atoms (iii) 4 moles of aluminium atoms. (Given N 14u ; O 16u : Al = 27 u ; Avagadro No / mol ) 12 g = (i) N (ii) 0.2 (iii) 4 (Given N 14u : O 16u : Al = 27 u : / mol ) 21. List four characteristic features of chordates. State reason for the following : (i) Nematodes have pseudocoelom. (ii) Arthropods have open circulatory system. (iii) Echinodermates are called so. (i) (ii) (iii) Page 5 of 14

OR / List two distinguishing features between pteridophytes and

State appropriate terms for the following : (i) Amphibans of the plant

(iii) Single celled, eukaryotic and photosynthetic organism.

State and explain with example the law of conservation of energy.

Calculate the number of units consumed in a month of 30 days.

Establish the relationship between kinetic energy and momentum of a body.

5 OR / List two distinguishing features between pteridophytes and phanerogams. State appropriate terms for the following : (i) Amphibans of the plant kingdom. (ii) Plants not having well differentiated body design. (iii) Single celled, eukaryotic and photosynthetic organism. (i) (ii) (iii) 22. State and explain with example the law of conservation of energy. An electric lamp of 100w is used daily for 5 hours. Calculate the number of units consumed in a month of 30 days. 100w 5 30 OR / A Person is holding a bucket of water by applying a vertical force of 100N. He first moves a horizontal distance of 5 m and then climbs up through stairs a vertical distance of 10 m. calculate the total work done by the person on the bucket. Establish the relationship between kinetic energy and momentum of a body. 100 N 5 m 10 m 23. Why are sound waves called mechanical waves? List two practical applications of reflection of these waves. A stone is dropped from the top of a tower 125 m high into a pond of water at the base of the tower. When is the splash heard at the top? (g = 10 m/s 2 and speed of sound = 340 m/s) 125 m g = 10 m/s 2 = 340 m/s) OR / Page 6 of 14

Explain how bats use ultrasounds to catch a prey?

Draw a labeled diagram to show carbon cycle in nature.

increase in environment pollution Justify this statement and suggest

For the experimental verification of law of conservation of mass in a

Addition of BaCl 2 solution to Na 2 SO 4 solution.

6 What are ultrasounds? Explain the use of ultrasounds in detecting defects in a metal block. Explain how bats use ultrasounds to catch a prey? Explain how moths of certain families are able to escape capture from a bat? (moths) 24. List three ways by which carbon dioxide is returned to the atmosphere. Draw a labeled diagram to show carbon cycle in nature. OR / Urbanization and industrialisation is mainly responsible for the increase in environment pollution Justify this statement and suggest ways and means to check it. SECTION - B / 25. For the experimental verification of law of conservation of mass in a chemical reaction following experiments/reactions were performed in a school laboratory : A. Addition of magnesium ribbon to CuSO 4 solution. B. Addition of limestone to dil HCl. C. Passing of CO 2 through lime water. D. Addition of BaCl 2 solution to Na 2 SO 4 solution. The reaction likely to give best result is : A B C D / A. CuSO 4 B. HCl C. CO 2 D. Na 2 SO 4 BaCl 2 A B C D 26. While performing experiment to verify the law of conservation of mass in a chemical reaction we generally use 5% solutions of two salts. 5% salt solution means 5 g salt is added to : 100 g of water 95 g of water 105 g of water 100 ml of water Page 7 of 14

7 5% 5% 5 g 100 g 95 g 105 g 100 ml 27. An unlabelled outline diagram of an earthworm is shown here. The important feature to be drawn and labeled for placing the earthworm in its phylum is : eye clitellum annuli anus 28. The mode of nutrition in agaricus is : parasitic Saprophytic holozoic Symbiotic 29. The structures called operculum and air bladder are present in which type of fish? Bony fish Marine fish Cartilaginous fish Fresh water fish Page 8 of 14

30. The given figure is of funaria mass plant.

represents : (A) Foot (B) Rhizoids (C) Seta

(D) Capsule (A) Rhizoids (B) Seta (C) Foot

(D) Capsule A, B, C D (A) (B) (C) (D) (A) (B)

8 30. The given figure is of funaria mass plant. The parts indicated by letters A, B, C and D represents : (A) Foot (B) Rhizoids (C) Seta (D) Capsule (A) Rhizoids (B) Foot (C) Seta (D) Capsule (A) Rhizoids (B) Seta (C) Foot (D) Capsule (A) Foot (B) Seta (C) Rhizoids (D) Capsule A, B, C D (A) (B) (C) (D) (A) (B) (C) (D) (A) (B) (C) (D) (A) (B) (C) (D) Page 9 of 14

31. Four observations as recorded by different groups of students about the roots and leaves of wheat

Fibrous roots and reticulate venation in leaves Tap roots and parallel venation in leaves Tap roots and

A student observed the developmental stages in the life cycle of a mosquito.

Adult 33. In the diagram is shown a portion of a measuring cylinder in which a liquid is filled.

9 31. Four observations as recorded by different groups of students about the roots and leaves of wheat plant are given below : The correct observations are : Fibrous roots and parallel venation in leaves Fibrous roots and reticulate venation in leaves Tap roots and parallel venation in leaves Tap roots and reticulate venation in leaves 32. A student observed the developmental stages in the life cycle of a mosquito. He would have observed that the stage in which the organism is found in water only is : Egg Larva Pupa Adult 33. In the diagram is shown a portion of a measuring cylinder in which a liquid is filled. The least count of the measuring cylinder and the volume of liquid filled in the cylinder respectively are : 1 ml ; 84 ml 2 ml ; 84 ml 1 ml ; 80.2 ml 2 ml ; 88 ml 1 ml ; 84 ml 2 ml ; 84 ml 1 ml ; 80.2 ml 2 ml ; 88 ml Page 10 of 14

34. The positions of the water level in the measuring cylinder before and after immersing an irreregular solid in it are as shown. The volume of the solid in cm 3 is : 10.1 10.2 11.0 12.0 cm 3 10.

A student records the weight of a metallic cylinder first in air, then in fresh water and finally in a highly concentrated common salt solution in water of the respective readings of the weights are

10 34. The positions of the water level in the measuring cylinder before and after immersing an irreregular solid in it are as shown. The volume of the solid in cm 3 is : cm A student records the weight of a metallic cylinder first in air, then in fresh water and finally in a highly concentrated common salt solution in water of the respective readings of the weights are W 1, W 2 and W 3 then the correct relationship in these three weights must be : W 3 > W 2 > W 1 W 1 = W 2 > W 3 W 1 > W 2 > W 3 W 1 = W 2 = W 3 W 1, W 2 W 3 W 3 > W 2 > W 1 W 1 = W 2 > W 3 W 1 > W 2 > W 3 W 1 = W 2 = W A given metallic solid is first weighed in air. It is then weight in by immersing is fully in each of the four vessels containing same liquid. If the volumes of liquids filled in the vessels are 400 ml, 500 ml 800 ml and 1000 ml respectively then he must observe that the weight of the solid is : least when immersed in the vessel containing 1000 ml liquid maximum when immersed in the vessel containing 1000 ml liquid least when immersed in the vessel containing 400 ml liquid Same in all the four cases Page 11 of 14

400 ml, 500 ml 800 ml 1000 ml 1000 ml 1000 ml 400 ml 37.

laboratory : (A) A tray filled with fine sand (B) A tray filled with coarse sand (C) A wooden cuboid of dimensions 10 cm 15 cm 20 cm (D) An iron

cuboid with coarse sand iron cuboid with fine sand wooden cuboid with fine sand (A) (B) (C) (D) 10 cm 15 cm 20 cm 2 cm 4 cm 10 cm 38.

cm 20 cm and (iii) 5 cm 20 cm lie on the sand.

11 400 ml, 500 ml 800 ml 1000 ml 1000 ml 1000 ml 400 ml 37. To observe and compare the pressure exerted by three different faces of a cuboid on sand, the following material is available in a school laboratory : (A) A tray filled with fine sand (B) A tray filled with coarse sand (C) A wooden cuboid of dimensions 10 cm 15 cm 20 cm (D) An iron cuboid of dimension 2 cm 4 cm 10 cm The best choice of the apparatus for conducting the experiment is : wooden cuboid with coarse sand iron cuboid with coarse sand iron cuboid with fine sand wooden cuboid with fine sand (A) (B) (C) (D) 10 cm 15 cm 20 cm 2 cm 4 cm 10 cm 38. An iron cuboid of dimension 2 cm 5 cm 20 cm is placed on sand in three different manners such that its side of dimensions : (i) 2 cm 5 cm (ii) 2 cm 20 cm and (iii) 5 cm 20 cm lie on the sand. A student would observe that the depression is : same in all the three cases maximum when its face of sides 2 cm 5 cm lie on the sand minimum when its face of sides 2 cm 5 cm lie on the sand maximum when its face of sides 5 cm 20 cm lie on the sand 2 cm 5 cm 20 cm (i) 2 cm 5 cm (ii) 2 cm 20 cm (iii) 5 cm 20 cm 2 cm 5 cm 2 cm 5 cm 5 cm 20 cm Page 12 of 14

39. Three experimental setups to verify the laws of reflection of sound are shown below : In which of the setups shown above will

thin hollow card board tubes D Sharp pointed detector of sound E Intense pointed source of sound F Two broad metallic tubes To

12 39. Three experimental setups to verify the laws of reflection of sound are shown below : In which of the setups shown above will the sound of the watch placed at the end of tube T 1 be heard distinctly at the end of the tube T 2 : only A only B only C only A and C T T 2 A B C A C 40. In a school laboratory following apparatus is available : A Well polished metal sheet B Intense and broad source of sound C Two thin hollow card board tubes D Sharp pointed detector of sound E Intense pointed source of sound F Two broad metallic tubes To perform the experiment of verifying the laws of reflection of sound successfully a student should select the apparatus labelled as : A, B, C, D A, B, D, F A, D, E, F A, C, D, E A B C D E F A, B, C, D A, B, D, F A, D, E, F A, C, D, E Page 13 of 14

41. While performing the experiment on measuring the speed of a pulse propagated through a stretched string a student has to choose between : (i) a thick cotton string and a thin silk string

string and stop clock (i) (ii) 42. A transverse pulse created at one end of a 5 m long string is observed to complete 6 return journeys along its length before fading out.

13 41. While performing the experiment on measuring the speed of a pulse propagated through a stretched string a student has to choose between : (i) a thick cotton string and a thin silk string (ii) a stop clock and a table clock For best results he should prefer : thin silk string and table clock thin silk string and stop clock thick cotton string and table clock thick cotton string and stop clock (i) (ii) 42. A transverse pulse created at one end of a 5 m long string is observed to complete 6 return journeys along its length before fading out. The initial and final readings on a stop clock used in the experiment are as shown below. The speed of the pulse through the string in m/s is : cm 6 m/s o O o Page 14 of 14

Science Class - IX SA II. Section A

Science Class - IX SA II. Section A Science Time allowed : 3 Hours Class - IX SA II Max. Marks : 90 General Instructions. 1. The question paper comprises of two sections, A and B. You have to attempt both the sections. 2. All questions are