Question 1 of 15
The electron was discovered by:
A
Rutherford
B
J.J. Thomson
C
Chadwick
D
Bohr
View Correct Answer & Step-by-Step Solution
Correct Option:(B)J.J. Thomson
Detailed explanation is available inside the official test attempt review.
Class 9 Chemistry: Structure of the Atom — Chapter Test 1
Class 9 • Chemistry • Structure of the Atom • Chapter Test
MediumFREE
15
Questions
20 min
Duration
15
Marks (1 each)
No
Negative marking
Original practice questions with full solutions by ExamPortal.
Instructions
- • Read each question carefully and pick the correct answer.
- • You can mark questions for review and come back to them.
- • Answers are saved automatically.
- • The test is submitted automatically when time runs out.
Access
This test is completely free.
Finish it to earn +5 points.
SYLLABUS & QUESTION BLUEPRINT
Sample Practice Questions
Preview 5 sample questions from this 15-question test. Test your knowledge below or take the full exam in timed CBT mode.
Question 2 of 15
The proton was discovered by:
A
Thomson
B
E. Goldstein (canal rays)
C
Chadwick
D
Dalton
View Correct Answer & Step-by-Step Solution
Correct Option:(B)E. Goldstein (canal rays)
Detailed explanation is available inside the official test attempt review.
Question 3 of 15
The neutron was discovered by:
A
Rutherford
B
Chadwick
C
Bohr
D
Thomson
View Correct Answer & Step-by-Step Solution
Correct Option:(B)Chadwick
Detailed explanation is available inside the official test attempt review.
Question 4 of 15
Thomson's model of the atom is also called the:
A
planetary model
B
plum pudding model
C
nuclear model
D
quantum model
View Correct Answer & Step-by-Step Solution
Correct Option:(B)plum pudding model
Detailed explanation is available inside the official test attempt review.
Question 5 of 15
Rutherford's alpha-scattering experiment showed that the atom has:
A
no nucleus
B
a small, dense, positively charged nucleus
C
electrons in the centre
D
uniform mass
View Correct Answer & Step-by-Step Solution
Correct Option:(B)a small, dense, positively charged nucleus
Detailed explanation is available inside the official test attempt review.
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Frequently asked questions
How many questions are there in Class 9 Chemistry: Structure of the Atom — Chapter Test 1?
There are 15 questions to answer in 20 min. Each correct answer gives 1 mark, for a total of 15 marks.
Is there negative marking?
No. Wrong answers do not lose marks, so attempt every question.
Is this mock test free?
Yes, it is completely free. Just log in with your email to start.
What does this test cover?
It covers the chapter "Structure of the Atom" of Class 9 Chemistry. All questions are original, with a full solution for each.
Will I see my result and the solutions?
Yes. Right after you submit you get your score, accuracy, rank and percentile, and you can review every question with the correct answer and a step-by-step explanation.
Can I take this test again?
Yes, you can retake it as many times as you like and compare your scores.