Worksheet

Syllabus Study Notes

Did you know the average porcupine has 30,000 spikes.

The art of being wise is the art of knowing what to overlook.– William James

Class IX >> Science >> Structure of Atoms >> A1

Q1	Neutron is a fundamental particle which carries __________.
A	Charge of -1 and Mass Zero
B	No Charge and Mass of One Unit
C	Charge of +1 and Mass of One Unit
D	No Charge and No Mass

Q2	Name the scientist who discovered electron?
A	Goldstein
B	J.J.Thomson
C	Rutherford
D	Chadwick

Q3	Name the scientist who discovered proton?
A	Goldstein
B	Robert Millikan
C	Chadwick
D	J.J.Thomson

Q4	Which of the following is NOT an inert gas?
A	Helium
B	Argon
C	Krypton
D	Hydrogen

Q5	An neutral atom has atomic number 24 and mass number 52. What will be the number of electrons?
A	23
B	24
C	28
D	None of the Above

Q6	Thomson produced the model of an atom, which he related to __________.
A	Molecule
B	Balls
C	Melon
D	Watermelon

Q7	For a neutral atom, number of protons will be equal to __________.
A	Number of Nucleons
B	Number of Neutrons
C	Number of Electrons
D	Zero

Q8	In which year, J.J. Thomson was awarded with the Nobel prize?
A	1856
B	1940
C	1906
D	1871

Q9	Which particle is known as doubly-charged helium ions?
A	Beta Particle
B	Alpha Particle
C	Gamma Particle
D	Electron

Q10	What is the value of n for L shell?
A	Two
B	One
C	Three
D	Four

Available Time

Time Left

Bonus Time Left

GoforPractice is an online structured PRACTICE PLATFORM for school students of CBSE board India. We strive to make practice fun and engaging for students and help them achieve their goals efficiently. Our practice tests are handcrafted for a thorough understanding of concepts using contemporary and modern learning techniques. With elaborate explanations and chapter-wise revision listing, our ecosystem provides resources to elevate students from a basic to an advanced level of performance.

About Us
Basic Rules
Child Safety
Terms & Conditions

FAQs
Blogs
Sitemap
Contact Us