OAV Class 6 Half Yearly Exam Science Question 2025 |Adarsha Class6 Half Yearly Science Real Question

Main ideas / lessons conveyed

• The video is a Class 6 Science exam question practice/revision session focused on Odisha’s 2025 half-yearly exam.
• The instructor repeatedly emphasizes:
  • Practice and write answers from the questions discussed
  • Don’t rush; focus on MCQs and short/long answers
  • The discussed questions are “sufficient for the exam” and follow sample/model paper patterns

Core science topics covered

Nutrition & deficiency diseases

• Night blindness due to vitamin A deficiency
• Beriberi due to vitamin B1 deficiency
• Scurvy due to vitamin C deficiency
• Rickets due to vitamin D deficiency

Food tests

• Iodine solution test: blue-black color indicates starch
• Fat test on paper: fat/oil leaves a translucent/greasy patch
• Protein test: copper sulphate + caustic soda sequence mentioned

Habitats & adaptations

• Terrestrial vs aquatic habitats; amphibians can live both
• Camel adaptations for hot vs cold deserts (long legs/strong body mentioned; thick fur/hair implied for cold)
• Cactus: stem stores water

Plant and animal body features

• Streamlined body for swimming (fish)
• Tap root vs fibrous root
• Leaf venation: parallel vs reticulate (definitions and examples)
• Plant classification: monocot vs dicot (examples such as chickpea and lemon grass mentioned)

Motion types (basic physics)

• Periodic
• Rectilinear (straight line)
• Circular
• Oscillatory (back-and-forth)
• Rotatory/rotation (around its own axis)

Magnets

• Lodestone as a natural magnet
• Properties:
  • North and south poles
  • Like poles repel, unlike poles attract
  • Strongest force is near the poles/ends

Other science basics

• Examples of junk food
• Balanced diet definition + a sample one-day chart (breakfast/lunch/dinner outline)
• Millets as a “super food” and their benefits
• Roughage = dietary fibre
• Protein sources and nutrients that give energy (carbohydrates)

---

Methodology / instructions

Exam preparation approach (as instructed)

• Prepare using class exam practice material and the discussed model/sample paper notes
• Watch the full revision video/class and practice all question types:
  • MCQ
  • short type
  • very short type
  • long type
• For MCQs:
  • Read carefully
  • Answer without overthinking
  • Write answers exactly for the given questions and don’t skip steps
• For short/very short/long questions:
  • Be able to write:
    • 2–3 sentence answers for some longer prompts
    • Definitions + examples for terms like venation, habitat, adaptation, and amphibian
• Timing mindset:
  • “Don’t hurry up” is mentioned, while also encouraging quick practice
• Use active study:
  • Write and practice repeatedly (including matching and fill-in-the-blanks style questions)
• Focus on frequently repeated patterns:
  • The teacher claims the questions are “real/sufficient” for the exam

Food/test steps described (conceptual practice)

• Fat presence test (paper test):
  • Coat/wrap food on paper
  • A translucent/greasy patch indicates fat
• Starch presence test (iodine solution test):
  • Add iodine solution to the sample
  • Blue-black color = starch
• Protein presence test (copper sulphate + caustic soda):
  • Add copper sulphate solution
  • Then add caustic soda (sodium hydroxide)
  • Presented as the method to test protein presence

Balance diet definition approach

• A balanced diet includes carbohydrates, proteins, fats, vitamins, minerals, water, and fibre in proper amounts
• A sample one-day balance diet is given in order: breakfast, lunch, evening, dinner

---

Speakers / sources featured (from subtitles)

• Jai Jagannath / Adarsha School / Adarsha Class 6
• Jai Jagannath / Suman Guruji (teacher/host identity)
• Khushbu ma’am
• Samridhi (student name called out)
• Student names mentioned: Subhranshu, Sasmita Sahu, Jadumani, Madhusmita, Abhipsa, Swastik, Ayushman, Om Prakash, Shivani, Mahanadi, Pradeep, Rashmita, Mamta, Gaurav, Sonu bhai, Gaurav’s

Primary speaker/teacher

• Suman Guruji (class instructor/host)