32 . Why are the elements classified ? মৌলবােৰৰ কিয় শ্রেণী বিভাজন কৰা হৈছিল ? 3. Which chemical substance is used to detect the presence of starch in plants? উদ্ভিদত শ্বেতসাৰৰ উপস্থিতি ধৰা পেলাবলৈ কোনবিধ ৰাসায়নিক দ্রব্য ব্যৱহাৰ কৰা হয় ? Which protects the spinal cord ? 1 স্নায়ুজু ক'ত সুৰক্ষিত হৈ থাকে ? What do you mean by transparent medium ? স্বচ্ছ মাধ্যম বুলিলে কি বুজা ? What do you mean by Power of Accommodation? 1 চকুৰ উপযােজন ক্ষমতা মানে কি? What energy is used for physical work? শাৰীৰিক কামৰ বাবে কি শক্তি ব্যৱহাৰ কৰা হয় ? How many pair of chromosomes are there in human body?1 মানৱ দেহত কিমানযােৰ ক্ৰম’জম থাকে ? ।
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- Classified helps us to understand the properties of the elements and their compounds.
- Triiodide solution
- The spinal cord is protected by bones, disc, ligaments and muscles.
- A medium which allows the passage of light through it easily is called a transparent medium.
- Power of accommodation is the ability of eye lens to focus near and far objects clearly on the retina by adjusting it's focal length.
- Adenosine triphosphate (ATP).
- 23 pairs
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স্বচ্ছ মাধ্যম বুলিলে কি বুজা ?
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