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1
MHT CET 2026 16th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
The force acting on the electron in hydrogen atom (Bohr's theory) is related to the principal quantum number n as
A
$n^4$
B
$n^{-4}$
C
$n^2$
D
$n^{-2}$
2
MHT CET 2026 16th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Using Bohr's atomic model, the orbital period of electron in hydrogen atom in the $n^{\text{th}}$ orbit is ($\epsilon_0$=permittivity of free space, h=Planck's constant, m = mass of electron, e = electronic charge)
A
$\dfrac{4\,\epsilon_0^2 n^3 h^3}{me^4}$
B
$\dfrac{2\epsilon_0^2 n^2 h^3}{me^2}$
C
$\dfrac{4\epsilon_0^2 n^2 h^3}{me^2}$
D
$\dfrac{2\epsilon_0 n^3 h^3}{me^4}$
3
MHT CET 2026 15th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
The electron in hydrogen atom is initially in the second excited state. When it finally moves to ground state, the maximum number of spectral lines emitted are
A
$2$
B
$3$
C
$4$
D
$5$
4
MHT CET 2026 15th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
In the hydrogen atom, radii of the first four Bohr orbits are related as
A
$1 : 2 : 3 : 4$
B
$\dfrac{1}{2} : \dfrac{1}{3} : \dfrac{1}{4}$
C
$1 : 4 : 9 : 16$
D
$\dfrac{1}{4} : \dfrac{1}{9} : \dfrac{1}{16}$
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Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry
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