EASY
9th CBSE
IMPORTANT
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If an atom contains one electron and one proton, will it carry any charge or not?
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Important Questions on Structure of Atom
EASY
9th CBSE
IMPORTANT
On the basis of Thomson's model of an atom how the atom is neutral as a whole?
EASY
9th CBSE
IMPORTANT
What is proton?
EASY
9th CBSE
IMPORTANT
How do you determine the charge on the cathode rays?
EASY
9th CBSE
IMPORTANT
What is the origin of the anode rays?
MEDIUM
9th CBSE
IMPORTANT
Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?
EASY
9th CBSE
IMPORTANT
Oxygen atom has 8 electrons, 8 protons and 8 neutrons whereas sulphur atom has 16 electrons, 16 protons and 16 neutrons. Find out the mass number of oxygen and sulphur atoms.
EASY
9th CBSE
IMPORTANT
If K and L - shells of an atom are full, then what would be the total number of electrons in the atom?
EASY
9th CBSE
IMPORTANT
What are canal rays?
(i) They are anode rays
(ii) They pass through the holes or canals in the cathode
(iii) They travel in straight lines
(iv) None of above
