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1
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statements is NOT true about Bohr atomic model?

A
An electron in hydrogen atom can move around the nucleus in one of the many possible orbits of fixed radius and energy.
B
The energy of an electron in the orbit does not change with time.
C
An electron can move only in those orbits for which angular momentum is integral multiple of $$\frac{\mathrm{h}}{2 \pi}$$.
D
This model can explain the ability of atoms to form molecules by chemical bonds.
2
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which from following elements is isoelectronic with $$\mathrm{Na}^{+}$$?

A
F
B
O
C
Mg
D
Ne
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which from following equations is used to express the angular momentum of an electron in a stationary state?

A
$$m v r=\frac{n h}{2 \pi}$$
B
$$\mathrm{mvr}=\frac{2 \pi}{\mathrm{nh}}$$
C
$$r=\frac{m v h}{n 2 \pi}$$
D
$$\mathrm{mv}=\frac{2 \pi \mathrm{r}}{\mathrm{nh}}$$
4
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which emission transition series is obtained when electron jumps from $$\mathrm{n}_2=\infty$$ to $$\mathrm{n}_1=1$$ ?

A
Balmer
B
Lyman
C
Paschen
D
Bracket
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Physical Chemistry
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Periodic Table and Periodicity Chemical Bonding and Molecular Structure Metallurgy Hydrogen and It's Compounds s-Block Elements p-Block Elements d and f Block Elements Coordination Compounds Environmental Chemistry
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Calculus
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Straight Lines and Pair of Straight Lines Circle Parabola
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