MCQ on Inside the Atom Class 8. We covered all the MCQ on Inside the Atom Class 8 in this post for free so that you can practice well for the exam.
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MCQ on What is Inside the Atom for Students
The proton is heavier than an electron by ………
1) 1850 times
2) 1840 times
3) 1000 times
4) 100 times
Option 2 – 1840 times
Carbon-12 atom has ……….
1) 6 electrons, 6 protons, 6 neutrons
2) 6 electrons, 12 protons, 6 neutrons
3) 12 electrons, 6 protons, 6 neutrons
4) 18 electrons, 6 protons and 6 neutrons
Option 1 – 6 electrons, 6 protons, 6 neutrons
Chadwick got the Nobel prize for the discovery of
1) protons
2) electrons
3) neutrons
4) nucleons
Option 3 – neutrons
Mass number is equal to the
1) protons + neutrons
2) protons + electrons
3) electrons + neutrons
4) neutrons – protons
Option 1 – protons + neutrons
The elements X has a 2 valence electrons it is a
1) metal
2) non metal
3) metalloid
4) alloy
Option 1 – metal
In Rutherford’s alpha-scattering experiment, a foil was used
1) platinum
2) silver
3) magnesium
4) gold
Option 4 – gold
An element has an electronic configuration 2,8,7 Its valency is
1) 1
2) 7
3) 3
4) 0
Option 1 – 1
The fixed circular paths around the nucleus are called
1) orbits
2) shells
3) orbitals
4) Both 1 & 2
Option 4 – Both 1 & 2
Nucleus was discovered by
1) Rutherford
2) Thomson
3) Chadwick
4) Bohr
Option 1 – Rutherford
Electrons was discovered by
1) Rutherford
2) Thomson
3) Chadwick
4) Bohr
Option 2 – Thomson
The K, L and M shells of an atom are completely filled. Its atomic number is
1) 30
2) 20
3) 10
4) 12
Option 1 – 30
Which of the air pressures is appropriate for the production of cathode rays in the discharge tube?
1) 1 cm Hg
2) 1 mm Hg
3) 0.001 cm Hg
4) 0.001 mm Hg
Option 4 – 0.001 mm Hg
Cathode rays are deflected towards ……….
1) positive electrode
2) negative electrode
3) both electrodes
4) none of the electrodes
Option 1 – positive electrode
Electron was discovered by ………
1) Chadwick
2) Thomson
3) Goldstein
4) Bohr
Option 2 – Thomson
An atom has a mass number of 23 and atomic number 11. The number of protons are ……….
1) 11
2) 12
3) 23
4) 44
Option 1 – 11
The mass of the atom is determined by ………
1) neutrons
2) neutron and proton
3) electron
4) electron and neutron
Option 2 – neutron and proton
Almost the entire mass of an atom is concentrated in the ……..
1) proton
2) electrons
3) nucleus
4) neutrons
Option 3 – nucleus
We covered all the MCQ on inside the atom class 8 above in this post for free so that you can practice well for the exam.
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thank you. its really helpful :>
Please share with your friends as well. Thanks.
It’s very useful you can add few questions covering dalton’s atomic theory Rutherford gold foil experiment also
We will definitely do that. Thanks, please share with your friends as well.
it was nice and helpful
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How many questions are in the exam
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