E7WE8J II SUMMATIVE ASSESSMENT II (06-7) (0-6) SCIENCE / Class IX / IX 90 Time allowed: hours Maximum Marks: 90 (i) (ii) (iii) (iv) (v) 4 0 (vi) 6 6 0 (vii) 7 70 (viii) 4 4 (ix) (x) 4 6 0 General Instructions : (i) The question paper comprises of three Sections, A, B and C. You are to attempt all the sections. (ii) All questions are compulsory. (iii) All questions of Section-A, Section-B and Section-C are to be attempted separately. (iv) Question numbers to in Section-A are one mark questions. These are to be answered in one word or in one sentence. (v) Question numbers 4 and in Section-A are two marks questions. These are to be answered in about 0 words each. (vi) Question numbers 6 to 6 in Section-A are three marks questions. These are to be answered in about 0 words each. (vii) Question numbers 7 to in Section-A are five marks questions. These are to be answered in about 70 words each. (viii) Section B has OTBA questions. Question number is two marks, Question number is three marks and Question number 4 is five marks question. (ix) Question numbers to in Section-C 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. (x) Question numbers 4 to 6 in section C are two marks questions based on practical skills. These are to be answered in about 0 words each. Page of 9
SECTION-A 4 How would you define an atom? Write the name of the sub-atomic particle discovered by J. Chadwick. What type of charge occurs on this particle? Name the group called the Amphibian of the plant kingdom. Explain how an ultrasound is used to clean spiral tubes and machine parts located in a place hard to reach. m v 00 J An object of mass m and velocity v has kinetic energy = 00 J. Find the new kinetic energy if the velocity of the object becomes double. 6 (i) (ii) 0.0g (Al O ) [ Al 7u] (i) Write the chemical formula of magnesium hydroxide. (ii) Calculate the number of aluminum ions present in 0.0 g of aluminium oxide [Atomic Mass of Al 7 u] 7 X M Why chemical properties of all the isotopes of an element are same? Name the isotopes used in the treatment of Goitre and Cancer. An element X has electrons in its M shell. What is its atomic number? 8 9 H u, O 6 u) Calculate the molecular mass of a molecule of water. Find the number of molecules present in 9 g of water. Page of 9
9 0 (Atomic mass H u, O 6 u) Write two examples of each of the following : Animals that do not locomote Flightless birds Molluscs without shell State the symptoms of the following organs targeted by microbes : Lungs Liver Brain What can be the symptoms of diseases? Are the symptoms of all diseases always different? If no, give an example to justify your answer. 0. cm 7.80 g/cc 0.8 cm.7 g/cc Radius of an iron sphere is 0. cm. If density of iron is 7.80 g/cc. Calculate its mass. Edge of a aluminium cube is 0.8 cm. If density of aluminium is.70 g/cc., calculate its mass. 00 Hz Look at the diagram given below : Page of 9
Find amplitude, wavelength and velocity, if waves are produced at a frequency of 00 Hz. 4 00 kg 7 km/h Calculate the work required to stop the car of 00 kg moving at a speed of 7 km/h by applying brakes. 0 m m. m.0 kg/m A dining hall has dimensions 0 m m. m. Calculate the mass of air in the hall. Density of air =.0 kg/m. State the unit of Relative density. 6 Sunita is a student of class VIII. During summer vacation the school arranged an educational trip to Agra. During their visit to Taj Mahal, when Sunita and other students entered the mausoleum of Mumtaj Mahal and king Shahjahan, she heard a mild persistent sound. Sunita asked her science teacher, who told her that it is due to reverberation. What is the difference between reverberation and echo? What qualities are exhibited by Sunita? 7 Define Valency. What conclusions can be drawn about the reactivity of an atom from its valency? Why does an atom of Argon have zero valency? Explain using the electronic configuration of Argon. Page 4 of 9
8 9 (e) Give a comparative account of the following : Ulothrix and funaria Marchantia and marselia Fern and pinus Cycas and rose (e) Wheat and gram Explain the following statements : Being disease free, is not the same as being healthy. Community health is essential for good individual health. Villagers suffer with cholera more than urban people. 0 SI 00 cm 800 kg 0 0 00 J g = 0 m\s Give SI unit and commercial unit of electrical energy. Calculate the power of an electric motor that can lift 800 kg of water to store in a tank at a height of 00 cm in 0 s. (g = 0 m/s ) A lamp consumes 00 J of electrical energy in 0 seconds. What is the power of the lamp. (i) (ii) (iii) State Archimedes principle. Explain giving reason the following : (i) It easier to swim in sea water than in river water. (ii) A nail can be easily fixed on a wall by putting its pointed edge on it. (iii) It is difficult to cut a fruit with a blunt knife. Page of 9
/SECTION B (OTBA) (* Please ensure that open text of the given theme is supplied with this question paper.) / Handling Drought in our Country Mention the impact of drought on agriculture. 4 A recent survey showed that the drought situation in Maharashtra has worsened with failure of monsoon for two consecutive years. How can this situation impact the lives of farmers, soil and environment in Maharashtra? Drought impacts can be highly varied and widespread and are potentially one of the most destructive hazards. Discuss. Section C The wave property of sound which does not affect the hearing process is : Intensity Loudness Velocity of sound Amplitude 6 4 cm 0 cm 0 cm 4 kg g 0 ms 0000 8000 0000, 800 000, 800 000, 80 An iron cuboid of dimensions 4 cm 0 cm 0 cm and mass 4 kg is placed on a table. If the value of g is 0 ms then maximum and minimum pressure exerted by the iron cuboid on the surface of the table respectively will be : 0000 Pascal, 8000 Pascal Page 6 of 9
0000 Pascal, 800 Pascal 000 Pascal, 800 Pascal 000 Pascal, 80 Pascal 7 8 When wave travels through a slinky which one of the following remains unchanged? Intensity energy amplitude frequency A thick strand of underground hyphae resembling a root is called as : Rhizoid Rhizophore Rhizomorph Radicle 9 / 0 On complete combustion of a hydrocarbon in sufficient oxygen, carbon dioxide and water are produced. Then according to the law of conservation of mass : Mass of hydrocarbon Mass of Carbon dioxide mass of water Mass of hydrocarbon Mass of Carbon dioxide mass of oxygen + mass of water Mass of hydrocarbon + Mass of oxygen = Mass of carbon dioxide + mass of water Mass of oxygen + mass of carbon dioxide = Mass of hydro carbon + mass of water Page 7 of 9
In order to verify the law of conservation of container, so that gaseous products do not escape heat transfer does not occur reactants do not mix with the products none of the above mass, we carry out chemical reactions in a closed Which of the following plants bears roots as shown in the figure below? Pea plant Maize plant Wheat plant Grass. (A) (B) (C) (D) : A B C D Shruti studied the external features of a monocot plant and recorded her observations as given below : (A) Fibrous root system (B) Trimenus flowers (C) Secondary growth found Page 8 of 9
(D) Parallel venation in leaves The incorrect observation is : A B C D While observing the life cycle of a mosquito Jai observed mouth brushes in a stage which is : Larva Eggs Pupa Adult mosquito 4 00 g 60 ml Swapnil was provided with a solid sphere of a metal of mass 00 g. He immersed it in a measuring cylinder half filled with water and found that the water level was raised by 60 ml. Calculate the density of the sphere. 900 g 00 cm 6 The volume of a solid cube of copper of mass 900 g is 00 cm. This cube is immersed in water. Find the mass of water displaced by it? If this cube is immersed in salt solution then how will the mass of liquid displaced by the cube change? Give reason for your answer. List two adaptations found in aquatic animals. -o0o0o0o- Page 9 of 9