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Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.
Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
Correct answer is option 'A'. Can you explain this answer?
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Direction: In the following questions, a statement of assertion (A) i...
In 1897, J.J. Thomson discovered the first subatomic particle, the electron, while researching cathode rays. To explain the neutrality of atoms, Thomson proposed a model of the atom in which negative electrons are scattered throughout a sphere of positive charge. He called his atom the raisin-pudding model.
Therefore, both assertion and reason are correct and the reason is the correct explanation for assertion.
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Direction: In the following questions, a statement of assertion (A) i...
Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.
Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.
The correct answer is option A: Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
Explanation:
Thomson's atomic model, also known as the "raisin pudding" model, was proposed by J.J. Thomson in 1904. This model was a modification of the earlier plum pudding model proposed by Thomson himself in 1897. Let's break down the assertion and reason to understand why option A is the correct answer.
Thomson's Atomic Model:
- Thomson's atomic model was proposed as a modification of the plum pudding model.
- It was based on the discovery of electrons by Thomson through his experiments with cathode rays.
- According to Thomson's model, an atom is visualized as a sphere of positive charge with electrons embedded in it like raisins in a pudding.
- The positive charge in the atom is spread uniformly throughout the atom, while the negatively charged electrons are scattered randomly within the positive charge.
Assertion (A): Thomson’s atomic model is known as ‘raisin pudding’ model.
The assertion is true. Thomson's atomic model is indeed known as the "raisin pudding" model because it visualizes the atom as a sphere of positive charge with electrons embedded in it like raisins in a pudding.
Reason (R): The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.
The reason is also true. In Thomson's atomic model, the atom is indeed visualized as a pudding of positive charge with electrons (raisins) embedded in it. The positive charge represents the overall charge of the atom, while the electrons represent the negatively charged particles.
Explanation of Correct Answer:
In this case, both the assertion and the reason are true. The reason provided correctly explains the assertion. Thomson's atomic model is known as the "raisin pudding" model because it visualizes the atom as a sphere of positive charge with electrons embedded in it like raisins in a pudding. Therefore, option A is the correct answer.
Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.
The correct answer is option A: Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
Explanation:
Thomson's atomic model, also known as the "raisin pudding" model, was proposed by J.J. Thomson in 1904. This model was a modification of the earlier plum pudding model proposed by Thomson himself in 1897. Let's break down the assertion and reason to understand why option A is the correct answer.
Thomson's Atomic Model:
- Thomson's atomic model was proposed as a modification of the plum pudding model.
- It was based on the discovery of electrons by Thomson through his experiments with cathode rays.
- According to Thomson's model, an atom is visualized as a sphere of positive charge with electrons embedded in it like raisins in a pudding.
- The positive charge in the atom is spread uniformly throughout the atom, while the negatively charged electrons are scattered randomly within the positive charge.
Assertion (A): Thomson’s atomic model is known as ‘raisin pudding’ model.
The assertion is true. Thomson's atomic model is indeed known as the "raisin pudding" model because it visualizes the atom as a sphere of positive charge with electrons embedded in it like raisins in a pudding.
Reason (R): The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.
The reason is also true. In Thomson's atomic model, the atom is indeed visualized as a pudding of positive charge with electrons (raisins) embedded in it. The positive charge represents the overall charge of the atom, while the electrons represent the negatively charged particles.
Explanation of Correct Answer:
In this case, both the assertion and the reason are true. The reason provided correctly explains the assertion. Thomson's atomic model is known as the "raisin pudding" model because it visualizes the atom as a sphere of positive charge with electrons embedded in it like raisins in a pudding. Therefore, option A is the correct answer.
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Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? for Class 9 2026 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer?.
Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? for Class 9 2026 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.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 Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Thomson’s atomic model is known as ‘raisin pudding’ model.Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 9 tests.
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