Worksheet

Syllabus Study Notes

Did you know Germany borders 9 other countries.

Experience is what you get when you don’t get what you want– Dan Stanford

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

Q1	Name the scientist who discovered proton?
A	Goldstein
B	Robert Millikan
C	Chadwick
D	J.J.Thomson

Q3	Thomson produced the model of an atom, which he related to __________.
A	Molecule
B	Balls
C	Melon
D	Watermelon

Q4	Which particle is known as doubly-charged helium ions?
A	Beta Particle
B	Alpha Particle
C	Gamma Particle
D	Electron

Q5	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

Q6	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

Q7	In which year, J.J. Thomson was awarded with the Nobel prize?
A	1856
B	1940
C	1906
D	1871

Q8	Which of the following is NOT an inert gas?
A	Helium
B	Argon
C	Krypton
D	Hydrogen

Q9	What is the value of n for L shell?
A	Two
B	One
C	Three
D	Four

Q10	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

Available Time

Time Left

Bonus Time Left

GoforPractice.com is an online education website offering a structured practice platform for school students of CBSE board India. We strive to make practice fun for students and help them achieve their goals efficiently through worksheets that are handcrafted for a thorough understanding of concepts using contemporary and modern learning techniques. Along with elaborate explanation and chapter wise revision listing, our ecosystem provides cutomisable worksheets to take students from basic to advanced levels of performance.

About Us
Basic Rules
Child Safety
Terms & Conditions

FAQ's
Blogs
Sitemap
Contact Us