Environmental Studies (EVS)
Food, Shelter & Water
Environmental Studies
Paper I
3 topics
What this chapter covers
The 3 topics below make up Food, Shelter & Water in the CTET syllabus. Open any topic for notes, solved examples and a practice MCQ test.
1Food: Sources, Cooking & Preservation
2Shelter: Houses & Materials
3Water: Sources, Uses & Conservation
Study material & tests
📚 Study this chapter
Concept notes, key points, solved examples and hint-guided practice for every topic.
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🎯 Topic MCQ tests
8 auto-graded CTET-style questions per topic, with full explanations.
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📝 Chapter test
25 fresh mixed-difficulty questions, timed, with solutions.
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Key Concepts — Quick Reference
This chapter
Nutrients and their deficiency diseases (memorise cold)
| Carbohydrates | Energy food - rice, wheat, potato, sugar |
|---|---|
| Proteins | Body-building - pulses, eggs, milk, fish, meat; lack -> kwashiorkor/marasmus |
| Vitamin A | Carrot, papaya, green veg; lack -> night blindness |
| Vitamin C | Amla, citrus, guava; lack -> scurvy |
| Vitamin D | Sunlight, milk; lack -> rickets (weak bones) |
| Iron | Green leafy veg, jaggery; lack -> anaemia |
| Iodine | Iodised salt, seafood; lack -> goitre |
Shelter and water at a glance
| Kutcha house | Mud, straw, bamboo, thatch - temporary |
|---|---|
| Pucca house | Brick, cement, concrete, stone - permanent |
| Water sources | Rain, river, pond, lake, well, spring, sea (salty) |
| Water cycle | Evaporation -> condensation -> precipitation -> collection |
| Rainwater harvesting | Collect & store rain to recharge groundwater |