WBJEE PYQs for Bohr’s Model for Hydrogen Atom with Solutions: Practice WBJEE Previous Year Questions

Updated 3+ months ago

Bohr’s Model for Hydrogen Atom is an important topic in the Chemistry section in WBJEE exam. Practising this topic will increase your score overall and make your conceptual grip on WBJEE exam stronger.

This article gives you a full set of WBJEE PYQs for Bohr’s Model for Hydrogen Atom with explanations for effective preparation. Practice of WBJEE Chemistry PYQs including Bohr’s Model for Hydrogen Atom questions regularly will improve accuracy, speed, and confidence in the WBJEE 2026 exam.

WBJEE PYQs for Bohr’s Model for Hydrogen Atom with Solutions

1.
The ionization energy of the hydrogen atom is $13.6\, eV$. The potential energy of the electron in $n = 2$ state of hydrogen atom is
- $+ 3.4\, eV$
- $- 3.4\, eV$
- $+ 6.8\, eV$
- $- 6.8\, eV$
View Solution
2.
When 0.001 M Na2SO4 solution is saturated with CaSO4, its conductivity increases from 2.6 x 10^-4 S cm^-1 to 7.0 x 10^-4 S cm^-1. If the molar conductivities of Na⁺ and Ca2⁺ respectively are 50 S cm² mol^-1 and 120 S cm² mol^-1, then the solubility product of CaSO4 is:[Assume that conductivity of water used is negligible.]
- (A) 7.0 x 10^-6 M²
- (B) 4.0 x 10^-6 M²
- (C) 3.5 x 10^-6 M²
- (D) 2.0 x 10^-6 M²
View Solution
3.
Under which of the following condition is the relation valid $Δ H = Δ E + P Δ V$ for a closed system?
- (A) Constant Pressure
- (B) Constant temperature
- (C) Constant temperature and pressure
- (D) Constant temperature, pressure and composition
View Solution
4.
The hydrides of the first elements in groups $15 - 17$, namely $NH_3, H_2O$ and $HF$ respectively show abnormally high values for melting and boiling points. This is due to
- small size of N, O and F
- the ability to form extensive intramolecular H-bonding
- the ability to form less intramolecular H-bonding
- effective van der Walls interaction
View Solution
5.
In transforming $0.01$ mole of $PbS$ to $PbSO _{4}$, the volume of ' $10$ volume' $H _{2} O _{2}$ required will be
- $11.2 \,mL$
- $22.4\, mL$
- $33.6\, mL$
- $44.8 \,mL$
View Solution

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WBJEE PYQs for Bohr’s Model for Hydrogen Atom with Solutions

1.The ionization energy of the hydrogen atom is $13.6\, eV$. The potential energy of the electron in $n = 2$ state of hydrogen atom is

3.Under which of the following condition is the relation valid ΔH=ΔE+PΔV for a closed system?

4.The hydrides of the first elements in groups $15 - 17$, namely $NH_3, H_2O$ and $HF$ respectively show abnormally high values for melting and boiling points. This is due to

5.In transforming $0.01$ mole of $PbS$ to $PbSO _{4}$, the volume of ' $10$ volume' $H _{2} O _{2}$ required will be

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1.
The ionization energy of the hydrogen atom is $13.6\, eV$. The potential energy of the electron in $n = 2$ state of hydrogen atom is

3.
Under which of the following condition is the relation valid $Δ H = Δ E + P Δ V$ for a closed system?

4.
The hydrides of the first elements in groups $15 - 17$, namely $NH_3, H_2O$ and $HF$ respectively show abnormally high values for melting and boiling points. This is due to

5.
In transforming $0.01$ mole of $PbS$ to $PbSO _{4}$, the volume of ' $10$ volume' $H _{2} O _{2}$ required will be