Class 9 Exam > Class 9 Questions > Identify the correct statement:a)Dalton was t...
Start Learning for Free
Identify the correct statement:
- a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.
- b)The law of constant proportions was stated by A Lavoisier.
- c)The molecules of noble gas elements are diatomic in nature.
- d)The law of conservation of mass was given by Louis Proust.
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Identify the correct statement:a)Dalton was the first to state that th...
Dalton was the first to state that the smallest indivisible portion of matter is an atom.
The law of conservation of mass was given by A.Lavoisier. The law of constant proportions was stated by Louis Proust. The molecules of noble gas elements are monoatomic in nature.
The law of conservation of mass was given by A.Lavoisier. The law of constant proportions was stated by Louis Proust. The molecules of noble gas elements are monoatomic in nature.
Most Upvoted Answer
Identify the correct statement:a)Dalton was the first to state that th...
Understanding Dalton's Contribution
John Dalton, an English chemist, is known for his pivotal role in the development of atomic theory. His assertion that atoms are the smallest indivisible units of matter laid the foundation for modern chemistry.
Key Points about Dalton's Theory:
- Indivisibility of Atoms: Dalton proposed that atoms are the fundamental building blocks of matter and cannot be divided further.
- Atomic Theory: He formulated a systematic theory explaining how different elements combine to form compounds, based on the idea that each element consists of unique atoms.
- Implications: Dalton's work helped explain chemical reactions and laid the groundwork for future discoveries in chemistry.
Why Other Options are Incorrect:
- Option B - Law of Constant Proportions: This law was actually stated by Joseph Proust, not Antoine Lavoisier. Proust's law states that a chemical compound always contains the same proportion of elements by mass.
- Option C - Noble Gases: Noble gases (like helium and neon) are monoatomic, meaning they exist as single atoms rather than diatomic molecules.
- Option D - Law of Conservation of Mass: This law was formulated by Antoine Lavoisier, stating that mass is neither created nor destroyed in a chemical reaction. Louis Proust did not propose this law.
Conclusion
Thus, the correct statement is option 'A', as it accurately reflects John Dalton's significant contribution to chemistry by establishing the concept of atoms as the smallest indivisible units of matter.
John Dalton, an English chemist, is known for his pivotal role in the development of atomic theory. His assertion that atoms are the smallest indivisible units of matter laid the foundation for modern chemistry.
Key Points about Dalton's Theory:
- Indivisibility of Atoms: Dalton proposed that atoms are the fundamental building blocks of matter and cannot be divided further.
- Atomic Theory: He formulated a systematic theory explaining how different elements combine to form compounds, based on the idea that each element consists of unique atoms.
- Implications: Dalton's work helped explain chemical reactions and laid the groundwork for future discoveries in chemistry.
Why Other Options are Incorrect:
- Option B - Law of Constant Proportions: This law was actually stated by Joseph Proust, not Antoine Lavoisier. Proust's law states that a chemical compound always contains the same proportion of elements by mass.
- Option C - Noble Gases: Noble gases (like helium and neon) are monoatomic, meaning they exist as single atoms rather than diatomic molecules.
- Option D - Law of Conservation of Mass: This law was formulated by Antoine Lavoisier, stating that mass is neither created nor destroyed in a chemical reaction. Louis Proust did not propose this law.
Conclusion
Thus, the correct statement is option 'A', as it accurately reflects John Dalton's significant contribution to chemistry by establishing the concept of atoms as the smallest indivisible units of matter.
Attention Class 9 Students!
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.
|
Explore Courses for Class 9 exam
|
|
Similar Class 9 Doubts
Top Courses for Class 9View all
Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer?
Question Description
Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer?.
Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Identify the correct statement:a)Dalton was the first to state that the smallest indivisible portion of matter is an atom.b)The law of constant proportions was stated by A Lavoisier.c)The molecules of noble gas elements are diatomic in nature.d)The law of conservation of mass was given by Louis Proust.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 9 tests.
|
|
Explore Courses for Class 9 exam
|
|
Suggested Free Tests
Test: The Fundamental Unit of Life- Case Based Type Questions- 1
Test | 10 questions
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup