WorksheetsSOA G8 SRM-1
Total questions: 50
Worksheet time: 26mins
Everything we see around is made up of
Matter
Stones
Bricks
Electrons were discovered by
John dalton
JJ thomson
Which of the following scientists used cathode ray tube
JJ Thomson
James Chadwick
Ernst Rutherford
Plum pudding model is suggested by
JJ Thomson
John Dalton
Ernst Rutherford
Alpha particle consists of
1 proton 1 neutron
2 proton , 2 neutrons
3 proton , 3 neutron
4 proton , 4 neutron
Alpha particle represents
Helium atom
Helium nucleus
Electrons in th helium
Neutrons were discovered by
JJ Thomson
Ernst Rutherford
James Chadwick
Which of the subatomic particles forms nucleus
Electrons and protons
Electrons and neutrons
Protons and neutrons
Protons and quarks
The scientist who said atoms combine at atomic level
John dalton
JJ Thomson
Rutherford
James Chadwick
In Rutherford's experiment , a circular fluorescent screen is made up of
Zinc sulphate
Znc sulphite
Zinc sulphide
Electrons revolve around an circular orbit called as
Rings
Mobile orbits
Stationary orbits
The combined atomic model of Rutherford and Neil Bohr is
Plum pudding
Planetary
Bowling ball
Watermelon
Which of the following scientists followed the quantum theory
Werner Heisenberg
Ernst Rutherford
Erwin Schrödinger
John Dalton
John dalton used a cathod ray tube to discover electron
True
False
Cathode ray bent towards negative charge of the plate
True
False
Cathode ray is
Negatively charged
Positively charged
A cut water melon is an example of planetary model of atom
True
False
According to Dalton
Atoms of same element have different masses and same chemical properties
Atoms of different atoms have different masses but same chemical properties
Atoms of different elements have different atomic masses and chemical properties
Which of the following is not considered as an subatomic particle
Eectron
Proton
Neutron
Quark
Gold foil experiment is conducted by Ernst Rutherford
True
False
Who used alpha particles in the proposal of an atomic model
Ernst Rutherford
JJ Thomson
Werner Heisenberg
In conclusion to Rutherford experiment, most of the gamma rays passed through atom indicating that the atom is mostly empty
True
False
Atomic model which is close to current reality in some important ways is
James Chadwick
JJ Thomson
Ernst Rutherford
Neil Bohr
Electrons carry _________ charge and neutrons _________ charge
Positive , negative
Negative , positive
The scientist who discovered the impossibility of certainty of electron magnitude and position is
Ernst Rutherford
Werner Heisenberg
Erwin Schrödinger
The theory which proposed that electron is not only a particle of wave but both
Planetary theory
Neil Bohr theory
Quantum theory
Atomic number is defined as the number of ___________ and atomic mass is __________
Potions , Electrons and neutrons
Electrons , Protons and neutrons
Protons , Protons and neutrons
When an electron loses energy,
It jumps from K shell to M shell
I jumps from L shell to M shell
It jumps from N shell to L shell
Which of the sub atomic particle is electrically neutral
Eectron
Proton
Neutron
Quantum model is also known as
Planetary model
Cloud model
Plum pudding model
The region where electron is much more likely to be found is called as
Orbit
Orbital
K shell
A very few alpha particles bounced back due to striking
Proton
Electron
Neutron
Proton and neutron mass
During Gold foil experiment Radioactive source is stored in
Lead lined box
Uranium lined box
Thorium lined box
Tiny solid sphere is an atomic model proposed by
John dalton
JJ Thomson
Rutherford
Neutrons has mass
Slightly greater then proton
Slightly lesser then proton
Equal to electron
Cathode rays travel from
Cathode to anode
Anode to cathode
Who suggested that the nucleus is positively charged
JJ Thomson
John dalton
East Rutherford
Atomos means
Uncuttable
Indivisible
Divisible
Who said that the atoms combine in the simplest whole number ratio to form compounds
John dalton
Ernst Rutherford
Werner Heisenberg
Electrostatic arrangement is the net arrangement of
Protons and neutrons
Protons and electrons
Neutrons and electrons
What are the short comings of Daltons atomic model
Stability of atom
Behaviour of one atom with another in terms of physical and chemical properties
Both
The positive charge that repelled alpha particles during gold foil experiment is
Protons
Nucleus
The picture portrays
Rutherfords atomic model
Bohr’s atomic model
Modern atomic model
According to the theory of quantum mechanics, arrangement of electrons around the nucleus could only be described in terms of
Stationary orbits
Pobability
Who inferred that there must be some positive charge inside the atom which balances negative charge of electrons
John Dalton
JJ Thomson
Ernst Rutherford
The diagram suggests the
Discovery of electron
Cathode ray is negatively charged
Discovery of protons
The scientists who used alpha particles in the discovery and study of subatomic particles
JJ Thomson and Ernst Rutherford
James Chadwick and Ernst Rutherford
Ernst Rutherford and Erwin Schrödinger
Alpha particle is positively charged because
It has 2 neutrons and 2 electrons
It has 2 protons and 2 neutrons
It has 2 neutrons and 2 quarks
Which model of atom was unable to explain the exact position of electrons
Modern atomic model
Bohr’s atomic model
Quantum mechanical model of atom
The mathematical principles that explained the behaviour electromagnetic energy is put forth by
Ernst Rutherford and Neil Bohr
Max plank and Albert Einstein
Erwin Schrödinger and Werner Heisenberg
