BITSAT PYQs for Dual Nature of Radiation and Matter with Solutions: Practice BITSAT Previous Year Questions

Updated 3+ months ago

Dual Nature of Radiation and Matter is an important topic in the Chemistry section in BITSAT exam. Practising this topic will increase your score overall and make your conceptual grip on BITSAT exam stronger.

This article gives you a full set of BITSAT PYQs for Dual Nature of Radiation and Matter with explanations for effective preparation. Practice of BITSAT Chemistry PYQs including Dual Nature of Radiation and Matter questions regularly will improve accuracy, speed, and confidence in the BITSAT 2026 exam.

BITSAT PYQs for Dual Nature of Radiation and Matter with Solutions

1.
Light of wavelength 180 nm ejects photoelectrons from a metal plate of work function 2 eV. If a magnetic field of 5 × 10⁻³ T is applied parallel to the plate, the radius of the path followed by electrons ejected normally with maximum energy is:
- 1.239 m
- 0.149 m
- 3.182 m
- 2.33 m
View Solution
2.
If enthalpies of formation of \( {C}_2{H}_4(g) \), \( {CO}_2(g) \) and \( {H}_2{O}(l) \) at 25°C and 1 atm pressure are 52, 394 and -286 kJ/mol respectively, the change in enthalpy for combustion of \( {C}_2{H}_4 \) is equal to:
- -141.2 kJ/mol
- -1412 kJ/mol
- +14.2 kJ/mol
- +1412 kJ/mol
View Solution
3.
Which of the following will precipitate first when an aqueous solution containing sulphate ions is added?
- \( {Mg}^{2+} \)
- \( {Ca}^{2+} \)
- \( {Sr}^{2+} \)
- \( {Ba}^{2+} \)
View Solution
4.
Young's double slit experiment is performed in a medium of refractive index \( 1.33 \). The maximum intensity is \( I_0 \). The intensity at a point on the screen where the path difference between the light coming out from slits is \( \lambda/4 \), is:
- \( 0 \)
- \( \frac{I_0}{2} \)
- \( \frac{3I_0}{8} \)
- \( \frac{2I_0}{3} \)
View Solution
5.
How much ethyl alcohol must be added to 1 litre of water so that the solution will freeze at \(-14^\circ \text{C}\)?

(K_f for water = 1.86 °C/mol)
- 7.5 mol
- 8.5 mol
- 9.5 mol
- 10.5 mol
View Solution
6.
The probability density plots of 1s and 2s orbitals are given in figure.

The density of dots in a region represents the probability density of finding electrons in the region. On the basis of the above diagram, which of the following statements is incorrect?
- 1s and 2s orbitals are spherical in shape.
- The probability of finding the electron is maximum near the nucleus.
- The probability of finding the electron at a given distance is equal in all directions.
- The probability density of electrons for 2s orbital decreases uniformly as distance from the nucleus increases.
View Solution
7.
Pick the correct statement about electron and photon:
- both electron and photons are fermions
- electron is a fermion and photons are bosons
- electron is boson and photons are fermions
- both electron and photons are bosons
View Solution
8.
A particle of mass \( m \) is projected with a velocity \( u \) making an angle of \( 30^\circ \) with the horizontal. The magnitude of angular momentum of the projectile about the point of projection when the particle is at its maximum height \( h \) is:
- \( \frac{\sqrt{3}}{16} \frac{m u^3}{g} \)
- \( \frac{\sqrt{3}}{2} \frac{m u^2}{g} \)
- \( \frac{m u^3}{\sqrt{2} g} \)
- zero
View Solution
9.
A dust particle of mass \(4 \times 10^{-12} \, {mg}\) is suspended in air under the influence of an electric field of 50 N/C directed vertically upwards. How many electrons were removed from the neutral dust particle? [Take, \(g = 10 \, {m/s}^2\)]
- 15
- 8
- 5
- 4
View Solution
10.
A 100m long wire having cross-sectional area \( 6.25 \times 10^{-4} \, {m}^2 \) and Young's modulus is \( 10^{10} \, {Nm}^{-2} \) is subjected to a load of 250N, then the elongation in the wire will be:
- \( 6.25 \times 10^{-3} \, {m} \)
- \( 4 \times 10^{-4} \, {m} \)
- \( 6.25 \times 10^{-6} \, {m} \)
- \( 4 \times 10^{-3} \, {m} \)
View Solution
11.
A proton (\( p \)) and an electron (\( e \)) will have the same de-Broglie wavelength when the ratio of their momenta is
(Assume \( m_p = 1849 m_e \)):
- \( 1:43 \)
- \( 43:1 \)
- \( 1:1849 \)
- \( 1:1 \)
View Solution
12.
If the energy of a photon is 10 eV, its momentum is:
- 5.33 × 10⁻²³ kg m/s
- 5.33 × 10⁻²⁵ kg m/s
- 5.33 × 10⁻²⁹ kg m/s
- 5.33 × 10⁻²⁷ kg m/s
View Solution
13.
Among the given halides, which one will give the same product in both S\(_N1\) and S\(_N2\) reactions?
- (III) only
- (I) and (II)
- (III) and (IV)
- (I), (III), and (IV)
View Solution

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BITSAT PYQs for Dual Nature of Radiation and Matter with Solutions: Practice BITSAT Previous Year Questions

BITSAT PYQs for Dual Nature of Radiation and Matter with Solutions

1.
Light of wavelength 180 nm ejects photoelectrons from a metal plate of work function 2 eV. If a magnetic field of 5 × 10⁻³ T is applied parallel to the plate, the radius of the path followed by electrons ejected normally with maximum energy is:

2.
If enthalpies of formation of \( {C}_2{H}_4(g) \), \( {CO}_2(g) \) and \( {H}_2{O}(l) \) at 25°C and 1 atm pressure are 52, 394 and -286 kJ/mol respectively, the change in enthalpy for combustion of \( {C}_2{H}_4 \) is equal to:

3.
Which of the following will precipitate first when an aqueous solution containing sulphate ions is added?

4.
Young's double slit experiment is performed in a medium of refractive index \( 1.33 \). The maximum intensity is \( I_0 \). The intensity at a point on the screen where the path difference between the light coming out from slits is \( \lambda/4 \), is:

5.
How much ethyl alcohol must be added to 1 litre of water so that the solution will freeze at \(-14^\circ \text{C}\)?

(K_f for water = 1.86 °C/mol)

6.
The probability density plots of 1s and 2s orbitals are given in figure.

The density of dots in a region represents the probability density of finding electrons in the region. On the basis of the above diagram, which of the following statements is incorrect?

7.
Pick the correct statement about electron and photon:

8.
A particle of mass \( m \) is projected with a velocity \( u \) making an angle of \( 30^\circ \) with the horizontal. The magnitude of angular momentum of the projectile about the point of projection when the particle is at its maximum height \( h \) is:

9.
A dust particle of mass \(4 \times 10^{-12} \, {mg}\) is suspended in air under the influence of an electric field of 50 N/C directed vertically upwards. How many electrons were removed from the neutral dust particle? [Take, \(g = 10 \, {m/s}^2\)]

10.
A 100m long wire having cross-sectional area \( 6.25 \times 10^{-4} \, {m}^2 \) and Young's modulus is \( 10^{10} \, {Nm}^{-2} \) is subjected to a load of 250N, then the elongation in the wire will be:

11.
A proton (\( p \)) and an electron (\( e \)) will have the same de-Broglie wavelength when the ratio of their momenta is
(Assume \( m_p = 1849 m_e \)):

12.
If the energy of a photon is 10 eV, its momentum is:

13.
Among the given halides, which one will give the same product in both S\(_N1\) and S\(_N2\) reactions?

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BITSAT PYQs for Dual Nature of Radiation and Matter with Solutions

1.Light of wavelength 180 nm ejects photoelectrons from a metal plate of work function 2 eV. If a magnetic field of 5 × 10⁻³ T is applied parallel to the plate, the radius of the path followed by electrons ejected normally with maximum energy is:

2.If enthalpies of formation of \( {C}_2{H}_4(g) \), \( {CO}_2(g) \) and \( {H}_2{O}(l) \) at 25°C and 1 atm pressure are 52, 394 and -286 kJ/mol respectively, the change in enthalpy for combustion of \( {C}_2{H}_4 \) is equal to:

3.Which of the following will precipitate first when an aqueous solution containing sulphate ions is added?

4.Young's double slit experiment is performed in a medium of refractive index \( 1.33 \). The maximum intensity is \( I_0 \). The intensity at a point on the screen where the path difference between the light coming out from slits is \( \lambda/4 \), is:

5.How much ethyl alcohol must be added to 1 litre of water so that the solution will freeze at \(-14^\circ \text{C}\)? (Kf for water = 1.86 °C/mol)

6.The probability density plots of 1s and 2s orbitals are given in figure. The density of dots in a region represents the probability density of finding electrons in the region. On the basis of the above diagram, which of the following statements is incorrect?

7.Pick the correct statement about electron and photon:

8.A particle of mass \( m \) is projected with a velocity \( u \) making an angle of \( 30^\circ \) with the horizontal. The magnitude of angular momentum of the projectile about the point of projection when the particle is at its maximum height \( h \) is:

9.A dust particle of mass \(4 \times 10^{-12} \, {mg}\) is suspended in air under the influence of an electric field of 50 N/C directed vertically upwards. How many electrons were removed from the neutral dust particle? [Take, \(g = 10 \, {m/s}^2\)]

10.A 100m long wire having cross-sectional area \( 6.25 \times 10^{-4} \, {m}^2 \) and Young's modulus is \( 10^{10} \, {Nm}^{-2} \) is subjected to a load of 250N, then the elongation in the wire will be:

11.A proton (\( p \)) and an electron (\( e \)) will have the same de-Broglie wavelength when the ratio of their momenta is (Assume \( m_p = 1849 m_e \)):

12.If the energy of a photon is 10 eV, its momentum is:

13.Among the given halides, which one will give the same product in both S\(_N1\) and S\(_N2\) reactions?

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1.
Light of wavelength 180 nm ejects photoelectrons from a metal plate of work function 2 eV. If a magnetic field of 5 × 10⁻³ T is applied parallel to the plate, the radius of the path followed by electrons ejected normally with maximum energy is:

2.
If enthalpies of formation of \( {C}_2{H}_4(g) \), \( {CO}_2(g) \) and \( {H}_2{O}(l) \) at 25°C and 1 atm pressure are 52, 394 and -286 kJ/mol respectively, the change in enthalpy for combustion of \( {C}_2{H}_4 \) is equal to:

3.
Which of the following will precipitate first when an aqueous solution containing sulphate ions is added?

4.
Young's double slit experiment is performed in a medium of refractive index \( 1.33 \). The maximum intensity is \( I_0 \). The intensity at a point on the screen where the path difference between the light coming out from slits is \( \lambda/4 \), is:

5.
How much ethyl alcohol must be added to 1 litre of water so that the solution will freeze at \(-14^\circ \text{C}\)?

(K_f for water = 1.86 °C/mol)

6.
The probability density plots of 1s and 2s orbitals are given in figure.

The density of dots in a region represents the probability density of finding electrons in the region. On the basis of the above diagram, which of the following statements is incorrect?

7.
Pick the correct statement about electron and photon:

8.
A particle of mass \( m \) is projected with a velocity \( u \) making an angle of \( 30^\circ \) with the horizontal. The magnitude of angular momentum of the projectile about the point of projection when the particle is at its maximum height \( h \) is:

9.
A dust particle of mass \(4 \times 10^{-12} \, {mg}\) is suspended in air under the influence of an electric field of 50 N/C directed vertically upwards. How many electrons were removed from the neutral dust particle? [Take, \(g = 10 \, {m/s}^2\)]

10.
A 100m long wire having cross-sectional area \( 6.25 \times 10^{-4} \, {m}^2 \) and Young's modulus is \( 10^{10} \, {Nm}^{-2} \) is subjected to a load of 250N, then the elongation in the wire will be:

11.
A proton (\( p \)) and an electron (\( e \)) will have the same de-Broglie wavelength when the ratio of their momenta is
(Assume \( m_p = 1849 m_e \)):

12.
If the energy of a photon is 10 eV, its momentum is:

13.
Among the given halides, which one will give the same product in both S\(_N1\) and S\(_N2\) reactions?