Class 9 Chemistry Assignment Answer 2021 (7th Week Rosayon Answer) has been published on My website bdjobstoday.info today. Assalamu Alaikum, We starting another new post about assignment and there is another new topic with new meaning. Yes, our new subject today is Class 9 Chemistry. Let’s start with the 4th week assignment answer of the subject where We will publish.
Class 9 Chemistry Assignment Answer 2021
Chapter and Chapter Title: The first chapter is the concept of chemistry. Lesson number / title / content included in the syllabus Introduction to Chemistry, Scope or fields of chemistry, The relationship of chemistry with other branches of science (physics, biology, geology, mathematics, etc). The importance of chemistry lessons The process of research in chemistry Chemistry. Take precautions in the use of laboratory and various chemicals used in the laboratory. Chemistry Assignment Sequence: Chemistry Assignment is made up of all the above topics. Where a prescribed work has been given on that chapter. Which also offers some guidelines for better presentation.
Class 9 chemistry 7th Week Assignment answer 2021
৯ম শ্রেণি রসায়ন অ্যাসাইনমেন্ট উত্তর ৪র্থ সপ্তাহ ২০২১
অ্যাসাইনমেন্টের নির্ধারিত কাজঃ
”প্রত্যেক শিক্ষার্থীর রসায়ন পরীক্ষাগারে বিশেষ সতর্কতা অবলম্বন করা আবশ্যক”। এ বিষয়ে একটি প্রতিবেদন লিখতে হবে। প্রতিবেদনে অবশ্যই পাঁচ ধরনের রাসায়নিক পদার্থের ঝুঁকির মাত্রা ও সংশ্লিষ্ট সতর্কতামূলক সাংকেতিক চিহ্ন উল্লেখ করে তা থেকে নিরাপদ থাকার উপায় উদাহরণ হিসেবে লিখতে হবে।
Instructions for writing chemistry assignments:
Use other materials (YouTube, website, magazine, etc.) including textbooks to know the level of risk of the substance. Will draw a warning sign for multiple objects of the same type.
There can be five types of chemicals-
1. Natural gas (fuel)
2. Heavy metals (lead, mercury, arsenic)
3. Mild sulfuric acid (H₂SO₄)
4. Benzene, naphthalene
5. Dark solution of sodium hydroxide
Evaluation Guide or Rubrix:
The level of risk of the five types of substances, the corresponding warning signs and ways to stay safe from them if presented correctly while maintaining creativity.
If you follow the rules of presenting the report with syntax.
The level of risk of the five types of substances, the corresponding warning signs and the way to stay safe from them if written correctly from the textbook.
If you follow the rules of report presentation.
If the level of risk of the five types of substances, the relevant warning signs and the way to stay safe from them are not accurate.
If you do not follow the rules of report presentation.
7th Week Class 9 Chemistry Assignment Answer
All the students of class 9 have found out that they have been given 4th week assignment in Chemistry. Chemistry which is only for science group students. That means there is no such thing as chemistry for art or business group students. All the juices in every aspect of science can be known by reading this chemistry subject. This chemistry is a subject that is very interesting and awakens the desire to know how to feel good. Today we have answered the assignment for the 4th week of the subject which is for class 9. You will find all the answers in the following part, look at them and write them down.
৬ষ্ঠ থেকে ৯ম শ্রেণি পর্যন্ত এ্যাসাইনমেন্ট উত্তর সবার আগে পেতে দ্রুত জানতে আমাদের ফেসবুক গ্রুপে জয়েন করুন (এখানে ক্লিক করে ☑️)
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