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Inverted into
Answers
Answer:
1. While playing in a park, a child was stung by a wasp. Some suggested to apply paste of baking
soda and others lemon juice as remedy. Which remedy do you think is appropriate and why?
2. A. Why an antacid tablet is taken whey you suffer from acidity?
B. Why factory waste is neutralized before disposing it into the water bodies?
3. Why mountaineers carry oxygen cylinders with them?
4. The process of fermentation is based on which principle?
5. Name one organism who respires anaerobically. How does this organism help in beverage
and baking industry?
6. RBC contains a red coloured pigment. Name the pigment and write its importance.
7. What is dialysis? When does it become necessary to take such a treatment?
8. List some ways to conserve water.
9. Name two fibres which are made up of proteins.
10. Name the process of taking out silk fibres from the cocoon for use as silk.
11. Which stage in the life cycle of silk moth is called cocoon?
12. Write the different types of fibres that form the hair of sheep.
13. Name the common method of asexual reproduction by which fungus, moss and fern
reproduce.
14. A yellow powdery substance is present in the anther which participates in reproduction
process. Name this substance.
15. Pollen grains are present inside anthers for long time yet they do not die. Why?
16. When a circuit is said to be overloaded discuss?
17. If the current flows through wire, does the wire behave like a magnet?
18. In the formation of a rainbow, what acts as tiny prisms?
19. Can you get a real image at any distance of the object from the convex mirror?
20. Explain the term lateral inversion.
21. Deforestation may lead to floods. Why?
22. All the needs of animals living in a forest are fulfilled. Justify this statement in a few
sentences.
23. Give any four factors which are responsible for the destruction of forests.
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