Q-1. (A) Choose the correct alternative from those given below each question: [12] 1) Which one of the following place is unlikely to be affected by a cyclone? [Chennai, Amritsar, Puri] 2) All the changes in the weather are driven by the ____. [Sun, Moon, Star] 3) During which time does land breeze blows? [ Night, Day, Summer] 4) Which of the following does not yield wool? [Yak, Camel, Woolly dog] 5) Fat is completely digested in the _____. [Stomach, Mouth, Small intestine] 6) Cuscuta is an example of _____. [Autotroph, Parasite, Host] 7) Which of the following liquid is heated by conduction? [Water, Mercury, Milk] 8) What type of substance is glucose? [Acid, Base, Neutral] 9) By which body part does an elephant get the sense of smell? [Eyes, Ears, Nose] 10)Which of the following plant has chlorophyll? [Fungus, Alga, Cuscuta] 11)Which country began silk production first? [Japan, China, India] 12)Which acid is present in vinegar? [Acetic acid, Citric acid, Formic acid] (B) Define: (any four) [04] 1) Neutralisation 2) Climate 3) Food 4) Nutrition 5) Temperature Q-2. (A) Answer the following questions in one sentence: [10] 1) The pores through which leaves exchange gases is known as _____ 2) Which part of the digestive canal is involved in chewing of food? 3) Where is bile produced? 4) What are silk fibres made up from? 5) Whose leaves are eaten up by silkworms? 6) What are insulators? 7) Name two methods by which rusting can be prevented? 8) What is meant by migration? 9) Indicate the type of climate of Rajasthan? 10)What is the main cause of wind movements? (B) Give two points of difference: (any three) [06] 1) Acid and Base 2) Laboratory thermometer and Clinical thermometer. 3) Parasite and Saprotroph. 4) Wool and Silk. Q-3. (A) Describe with neat diagram the following experiments: any one) [05] 1) To demonstrate that sunlight is inevitable for the process of photosynthesis. 2) To observe the flow of heat through solid object (a metal). (B) Explain giving scientific reasons: (any two) [04] 1) Holes are made in hanging banners and boardings. 2) Rusting of iron objects if faster in coastal areas than in deserts. 3) Factory waste is neutralized before disposing it into the water bodies. Q-4. (A) Answer the following questions in detail: (any two) [08] 1) Describe how crystals of copper sulphate are prepared. 2) How does elephant living in the tropical rainforest adapt itself? 3) Give a brief description of the process of synthesis of food in green plants. (B) Answer the following questions in short: (any four) [08] 1) Why do organisms take food? 2) Explain the process of shearing? 3) In places of hot climate, it is advisable that the outer walls of houses be painted white. Explain. 4) Name the type of carbohydrate that can be digested by ruminants but not by humans. Give the reason also. Q-5. (A) Answer the following questions in short: (any two) [04] 1) The tropical rainforest ha a large population of animals. Explain. 2) What planning is required in advance to deal with the situation created by cyclone? 3) Suggest two methods to find out wind direction at a given place. (B) Classify the following substances into acidic, basic and neutral substances [04] Common salt, Slaked lime, Vinegar, Tamarind solution, Soap, Nitre, Distilled water, Curd. (C) Fill in the blanks: [05] 1) Changes in which new substance are formed are called _____ changes. 2) No medium is required for transfer of heat by the process of _______. 3) Amoeba digests its food in the _____. 4) The food synthesized by plants is stored as _______. 5) The plant which traps and feeds on insects is ______. I need this full paper answer
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pls make short questions it is very hard to read
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