Class 6 Science Chapter 11: Nature’s Treasures — practice questions with answers
Free practice for Class 6 Science, Chapter 11: Nature’s Treasures. Try the solved questions below, then take a free test with instant marking and explanations.
32 questions15 easy, 13 medium, 4 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. Why is it difficult to hold our breath for a long time?
- The body does not get enough oxygen to perform its functions
- The lungs become too heavy
- Air has no oxygen
- We get too much food
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Answer: A. The body does not get enough oxygen to perform its functions
Why: The air we breathe has oxygen; holding breath too long deprives the body of the oxygen it needs. [p.208]
Why: The air we breathe has oxygen; holding breath too long deprives the body of the oxygen it needs. [p.208]
Q2. We can survive without oxygen for a few days, just as we can without food.
True or false?
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Answer: False
Why: We can survive without food or water for a few days, but not without oxygen for even a few minutes. [p.209]
Why: We can survive without food or water for a few days, but not without oxygen for even a few minutes. [p.209]
Q3. According to Fig. 11.1, what percentage of air is nitrogen?
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Answer: 78 (± 0)
Why: Nitrogen occupies 78 of the 100 squares: 78%. [p.209]
Why: Nitrogen occupies 78 of the 100 squares: 78%. [p.209]
Q4. Moving air is called ______.
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Answer: wind
Why: Moving air is called wind — fast during a storm, gentle as a breeze. [p.209]
Why: Moving air is called wind — fast during a storm, gentle as a breeze. [p.209]
Q5. About how much of the Earth’s surface is covered with water?
- Two-thirds
- One-tenth
- Half
- All of it
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Answer: A. Two-thirds
Why: Water covers about two-thirds of the Earth’s surface, mostly in oceans and seas. [p.211]
Why: Water covers about two-thirds of the Earth’s surface, mostly in oceans and seas. [p.211]
Q6. Why is ocean water not fit for domestic, farm and industrial use?
- It is saline (salty)
- It is too cold
- It is frozen
- It has no oxygen
Show answer
Answer: A. It is saline (salty)
Why: Most water is in oceans and seas and is saline, so it is not fit for these uses. [p.211]
Why: Most water is in oceans and seas and is saline, so it is not fit for these uses. [p.211]
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Frequently asked questions
How many practice questions are there for Class 6 Science Chapter 11: Nature’s Treasures?
32 questions (15 easy, 13 medium, 4 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 6 Science syllabus, used by CBSE and many state boards.