SAN THOME ACADEMY,DEWAS
PERIODIC ASSESSMENT I (2021-22)
CLASS : VIII SUBJECT: SCIENCE M.M.:40
Q1] Answer in one word [1*4=4]
1. The most malleable and ductile metal.
2. Cultivation of fruits, vegetables and ornamental plants.
3. Total Biosphere reserves in India.
4. An example of ‘Biodiversity hotspot’
Q2] Correct the statement [1*4=4]
1. Dodo is an endangered bird.
2. Silicon is a metal.
3. Rearing of fishes is called apiculture.
4. Wheat is a kharif crop.
Q3] Answer in short [2*4=8]
1. Define endemic species and extinct species with example.
2. Write difference between metals and nonmetals.
3. Write two uses of - aluminium and copper.
4. Write two advantages of ploughing.
Q5] Give reasons [2*4=8]
1. Why do birds migrate?
2. Why are cooking utensils made up of metals?
3. Why are kharif crops sown in rainy season?
4. Why should we protect forest?
Q6] Answer in detail [3*4=12]
1. What is manure? Explain the different types of manure.
2. What is reactivity series? Name the metal placed at the top and bottom of the
reactivity series.
What will happen if iron nail is dipped in copper sulphate solution. Also write the
reaction involved.
3. What is the difference between afforestation and deforestation.
Explain the effect of deforestation on the environment.
Q7] Draw flow chart of [1*2=2]
a) Methods of crop production
b) Classification of Elements
Q8] Draw labeled diagram of two agricultural equipment’s . [1*2=2]
Answers
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Answer:
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Answer:
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
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