Engineering & Architecture Admissions
Q. Which of the following techniques is commonly used to separate proteins based on their size?
A.
Chromatography
B.
Electrophoresis
C.
Spectroscopy
D.
Centrifugation
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Solution
Gel electrophoresis is a technique used to separate proteins based on their size and charge.
Correct Answer: B — Electrophoresis
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Q. Which of the following transition metals can exhibit a +5 oxidation state?
A.
Vanadium
B.
Chromium
C.
Manganese
D.
Iron
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Solution
Vanadium can exhibit a +5 oxidation state in compounds like V2O5.
Correct Answer: A — Vanadium
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Q. Which of the following transition metals can exhibit a +7 oxidation state?
A.
Manganese
B.
Iron
C.
Copper
D.
Nickel
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Solution
Manganese can exhibit a +7 oxidation state, as seen in permanganate ion (MnO4-).
Correct Answer: A — Manganese
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Q. Which of the following transition metals is known for forming complex ions?
A.
Scandium
B.
Titanium
C.
Copper
D.
Zinc
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Solution
Copper (Cu) is well-known for forming complex ions due to its ability to coordinate with ligands.
Correct Answer: C — Copper
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Q. Which of the following transitions in a hydrogen atom would emit the highest energy photon?
A.
n=2 to n=1
B.
n=3 to n=2
C.
n=4 to n=3
D.
n=5 to n=4
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Solution
The transition from n=2 to n=1 emits the highest energy photon as it involves the largest energy difference.
Correct Answer: A — n=2 to n=1
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Q. Which of the following types of bonds involves the sharing of electron pairs between atoms?
A.
Ionic bond
B.
Covalent bond
C.
Metallic bond
D.
Hydrogen bond
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Solution
Covalent bonds are formed when two atoms share one or more pairs of electrons.
Correct Answer: B — Covalent bond
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Q. Which of the following waves can travel through a vacuum?
A.
Sound waves
B.
Water waves
C.
Electromagnetic waves
D.
Seismic waves
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Solution
Electromagnetic waves can travel through a vacuum, while sound waves, water waves, and seismic waves require a medium.
Correct Answer: C — Electromagnetic waves
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Q. Which of the following waves is an example of a longitudinal wave?
A.
Light wave
B.
Sound wave
C.
Water wave
D.
Seismic S-wave
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Solution
A sound wave is an example of a longitudinal wave, where the particle displacement is parallel to the direction of wave propagation.
Correct Answer: B — Sound wave
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Q. Which of the following waves requires a medium to propagate?
A.
Electromagnetic waves
B.
Sound waves
C.
Light waves
D.
Radio waves
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Solution
Sound waves are mechanical waves that require a medium (solid, liquid, or gas) to propagate, while electromagnetic waves can travel through a vacuum.
Correct Answer: B — Sound waves
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Q. Which of the following will exhibit the greatest freezing point depression?
A.
0.1 M NaCl
B.
0.1 M K2SO4
C.
0.1 M CaCl2
D.
0.1 M urea
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Solution
0.1 M K2SO4 will exhibit the greatest freezing point depression due to its van 't Hoff factor of 3.
Correct Answer: C — 0.1 M CaCl2
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Q. Which of the following will exhibit the greatest vapor pressure lowering?
A.
0.1 M NaCl
B.
0.1 M CaCl2
C.
0.1 M K2SO4
D.
0.1 M glucose
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Solution
CaCl2 dissociates into three ions (Ca2+ and 2 Cl-), leading to the greatest vapor pressure lowering among the options.
Correct Answer: B — 0.1 M CaCl2
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Q. Which of the following will exhibit the lowest vapor pressure?
A.
Pure water
B.
0.1 M NaCl solution
C.
0.1 M KCl solution
D.
0.1 M glucose solution
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Solution
The 0.1 M NaCl solution will exhibit the lowest vapor pressure due to the presence of more solute particles (2 ions per formula unit).
Correct Answer: B — 0.1 M NaCl solution
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Q. Which of the following will have the highest pH?
A.
0.1 M HCl
B.
0.1 M NaOH
C.
0.1 M CH3COOH
D.
0.1 M NH4Cl
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Solution
0.1 M NaOH is a strong base and will have the highest pH compared to the other options.
Correct Answer: B — 0.1 M NaOH
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Q. Which of the following will have the lowest boiling point?
A.
0.1 M NaCl
B.
0.1 M KBr
C.
0.1 M MgCl2
D.
0.1 M C6H12O6
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Solution
C6H12O6 does not dissociate, while the others do, leading to higher boiling points.
Correct Answer: D — 0.1 M C6H12O6
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Q. Which of the following will have the lowest freezing point?
A.
0.1 m NaCl
B.
0.1 m KBr
C.
0.1 m MgCl2
D.
0.1 m C6H12O6
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Solution
0.1 m MgCl2 produces 3 particles (Mg2+ and 2 Cl-), leading to the lowest freezing point among the options.
Correct Answer: C — 0.1 m MgCl2
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Q. Which of the following will have the lowest vapor pressure?
A.
Pure solvent
B.
0.1 M NaCl
C.
0.1 M KCl
D.
0.1 M CaCl2
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Solution
0.1 M CaCl2 produces the most particles in solution (3 ions), leading to the lowest vapor pressure.
Correct Answer: D — 0.1 M CaCl2
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Q. Which p-block element is known for forming a stable +4 oxidation state?
A.
Carbon
B.
Silicon
C.
Germanium
D.
Tin
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Solution
Tin (Sn) is known for forming a stable +4 oxidation state.
Correct Answer: D — Tin
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Q. Which p-block element is known for forming strong covalent bonds?
A.
Nitrogen
B.
Oxygen
C.
Fluorine
D.
All of the above
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Solution
All of the listed elements (Nitrogen, Oxygen, Fluorine) are known for forming strong covalent bonds.
Correct Answer: D — All of the above
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Q. Which p-block element is known for its ability to form multiple allotropes?
A.
Carbon
B.
Phosphorus
C.
Sulfur
D.
Arsenic
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Solution
Phosphorus can exist in several allotropes, including white, red, and black phosphorus.
Correct Answer: B — Phosphorus
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Q. Which p-block element is known for its allotropes including diamond and graphite?
A.
Silicon
B.
Carbon
C.
Phosphorus
D.
Boron
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Solution
Carbon is known for its allotropes, including diamond and graphite.
Correct Answer: B — Carbon
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Q. Which particle is emitted during beta decay?
A.
Alpha particle
B.
Beta particle
C.
Gamma ray
D.
Neutron
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Solution
Beta decay involves the emission of a beta particle, which is an electron or positron.
Correct Answer: B — Beta particle
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Q. Which particle is responsible for mediating the weak nuclear force?
A.
Photon
B.
Gluon
C.
W and Z bosons
D.
Graviton
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Solution
The weak nuclear force is mediated by the W and Z bosons.
Correct Answer: C — W and Z bosons
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Q. Which phenomenon demonstrates the particle nature of light as evidenced by the photoelectric effect?
A.
Interference
B.
Diffraction
C.
Photoelectric effect
D.
Refraction
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Solution
The photoelectric effect demonstrates the particle nature of light, as it shows that light can be thought of as consisting of particles (photons) that can impart energy to electrons.
Correct Answer: C — Photoelectric effect
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Q. Which phenomenon demonstrates the particle nature of light as evidenced in the photoelectric effect?
A.
Interference
B.
Diffraction
C.
Emission spectra
D.
Photon emission
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Solution
The photoelectric effect demonstrates the particle nature of light, as it involves the emission of electrons due to the absorption of photons.
Correct Answer: D — Photon emission
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Q. Which phenomenon demonstrates the particle nature of light as explained by the photoelectric effect?
A.
Diffraction
B.
Interference
C.
Emission of electrons
D.
Refraction
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Solution
The photoelectric effect demonstrates the particle nature of light, as it shows that light can be thought of as consisting of particles (photons) that can impart energy to electrons.
Correct Answer: C — Emission of electrons
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Q. Which phenomenon demonstrates the particle nature of light in the context of the photoelectric effect?
A.
Interference
B.
Diffraction
C.
Emission of electrons
D.
Refraction
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Solution
The emission of electrons in the photoelectric effect demonstrates the particle nature of light, as it involves the transfer of energy from photons to electrons.
Correct Answer: C — Emission of electrons
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Q. Which phenomenon demonstrates the particle nature of light?
A.
Diffraction
B.
Interference
C.
Photoelectric effect
D.
Refraction
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Solution
The photoelectric effect demonstrates the particle nature of light as it involves photons colliding with electrons.
Correct Answer: C — Photoelectric effect
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Q. Which phenomenon describes the splitting of light into two rays upon entering a birefringent material?
A.
Refraction
B.
Reflection
C.
Double refraction
D.
Diffraction
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Solution
The splitting of light into two rays in a birefringent material is known as double refraction.
Correct Answer: C — Double refraction
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Q. Which phenomenon explains the bending of waves around obstacles?
A.
Reflection
B.
Refraction
C.
Diffraction
D.
Interference
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Solution
Diffraction is the phenomenon that explains the bending of waves around obstacles and the spreading of waves when they pass through openings.
Correct Answer: C — Diffraction
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Q. Which phenomenon explains the change in frequency of a wave in relation to the observer's motion?
A.
Doppler effect
B.
Interference
C.
Diffraction
D.
Refraction
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Solution
The Doppler effect describes the change in frequency (and wavelength) of a wave in relation to an observer moving relative to the wave source.
Correct Answer: A — Doppler effect
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