9th Class Chemistry Chapter 02 MCQs with Answers

Welcome to the 9th Class Chemistry Chapter 02 MCQs Online Test. We are presenting you with top MCQ questions from the 9th Class Chemistry Chapter Structure of Atoms.

We want to tell you that you can find all the 9th Class Chemistry Chapter 02 MCQs online tests on our website. These online tests are great for learning and as well as for scoring maximum marks in your Matric Exams. We are making these Class 9 Chemistry MCQs online tests for those who want full marks in their exams. Attempt all these Grade 9 Chemistry Online Multiple Choice Questions MCQs before going for the exam and it will be beneficial for you! These online tests contain all the important multiple choice questions in the important topics of the SSC Part 1 Chemistry Chapter 02 Structure of Atoms

9th Class Chemistry Chapter 02 MCQs with Answers

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This is a free platform for students to prepare for Biology Exams for Class 9 to get the best accomplishments in annual exams. 9th class Students can analyze themself by attempting this online test system as many times as they want until they find themself fully prepared.

MCQs Class 9 Chemistry with Answers

The purpose of these online MCQs tests is to help you evaluate your 9th Class Chemistry Chapter 02 MCQs. These Multiple Choice Questions (MCQs) will prepare you for your academic success in the 9th Class Exams. 9th Class Chemistry chapters includes Chapter 1 – Fundamentals of Chemistry, Chapter 2 – Structure of Atoms, Chapter 3 – Periodic Table and Periodicity of Properties, Chapter 4 – Structure of Molecules, Chapter 5 – Physical States of Matter, Chapter 6 – Solutions, Chapter 7 – Electrochemistry and Chapter 8 – Chemical Reactivity

What is the Structure of Atoms?

Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (centre) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain electrons (negatively charged).

9th Class Chemistry Chapter 01 MCQs: Structure of Atoms

1. Matter is composed of tiny indivisible particles called:

(a) Element
(b) Atom
(c) Compound
(d) substance

2. Atom of the same elements are

(a) Different
(b) Alike
(c) Comparable
(d) Active

3. Gas discharge tube experiment was performed by:

(a) J.J. Thomson
(b) Rutherford
(c) Dalton
(d) William Crooks

4. The pressure inside the discharge tube for the discovery of electrons was kept

(a) 104 atm
(b) 10-4 atm
(c) 1014 atm
(d) 10-14 atm

5. Who was the pioneer of vacuum tubes?

(a) William Crooks
(b) Rutherford
(c) Bohr
(d) Dalton

6. The nature of canal rays depends upon:

(a) Nature of anode
(b) Nature of Cathode
(c) Nature of gas
(d) Nature of particles\

7. The mass of a proton is times more than that of an electron:

(a) 1830
(b) 1840
(c) 2
(d) 3

8. Which one of the followings is produced by the bombardment of the helium particle on beryllium?

(a) Alpha particle
(b) Beta particle
(c) Neutron
(d) Gamma rays

9. The highly penetrating rays are:

(a) Alpha particle
(b) Beta particle
(c) Neutron
(d) Both a & b

10. Neutron was discovered by

(a) Rutherford
(b) Chadwick
(c) Bohr
(d) William Crooks

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