Major Competitive Exams

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Q. What is the phase of the cell cycle where the cell grows and prepares for mitosis? (2020)
  • A. G1 phase
  • B. S phase
  • C. G2 phase
  • D. M phase
Q. What is the phenomenon called when a changing magnetic field induces an electric current in a conductor?
  • A. Electromagnetic induction
  • B. Electrolysis
  • C. Magnetic resonance
  • D. Thermal conduction
Q. What is the phenomenon called when a changing magnetic field induces an electromotive force (EMF) in a conductor?
  • A. Electromagnetic induction
  • B. Magnetic resonance
  • C. Electrolysis
  • D. Magnetization
Q. What is the phenomenon called when a changing magnetic field induces an electromotive force (EMF) in a circuit?
  • A. Electromagnetic induction
  • B. Magnetic resonance
  • C. Electrolysis
  • D. Magnetization
Q. What is the phenomenon called when a conductor moves through a magnetic field and generates an electric current?
  • A. Electromagnetic induction
  • B. Magnetic hysteresis
  • C. Electrostatic induction
  • D. Magnetic flux
Q. What is the phenomenon called when a liquid changes to gas at a temperature below its boiling point?
  • A. Evaporation
  • B. Condensation
  • C. Sublimation
  • D. Freezing
Q. What is the phenomenon called when a liquid changes to gas at temperatures below its boiling point?
  • A. Evaporation
  • B. Condensation
  • C. Sublimation
  • D. Vaporization
Q. What is the phenomenon called when a liquid rises in a narrow tube against gravity?
  • A. Capillarity
  • B. Viscosity
  • C. Surface tension
  • D. Hydrostatic pressure
Q. What is the phenomenon called when an electron transitions from a higher energy level to a lower energy level in an atom?
  • A. Ionization
  • B. Excitation
  • C. Emission
  • D. Absorption
Q. What is the phenomenon called when electrons are emitted from a metal surface when it is exposed to light?
  • A. Photoelectric effect
  • B. Compton effect
  • C. Rayleigh scattering
  • D. Black body radiation
Q. What is the phenomenon called when light bends as it passes from one medium to another? (2020)
  • A. Reflection
  • B. Refraction
  • C. Diffraction
  • D. Dispersion
Q. What is the phenomenon called when light waves are restricted to vibrate in a single plane?
  • A. Refraction
  • B. Diffraction
  • C. Polarization
  • D. Interference
Q. What is the phenomenon called when light waves bend around the edges of an obstacle?
  • A. Reflection
  • B. Refraction
  • C. Diffraction
  • D. Interference
Q. What is the phenomenon called when one gene affects the expression of another gene? (2022)
  • A. Epistasis
  • B. Pleiotropy
  • C. Codominance
  • D. Incomplete dominance
Q. What is the phenomenon called when sound waves bend around obstacles?
  • A. Reflection
  • B. Refraction
  • C. Diffraction
  • D. Interference
Q. What is the phenomenon called when sound waves bounce off a surface? (2021)
  • A. Refraction
  • B. Reflection
  • C. Diffraction
  • D. Interference
Q. What is the phenomenon of bending of light called? (2023)
  • A. Reflection
  • B. Refraction
  • C. Diffraction
  • D. Dispersion
Q. What is the phenomenon of bending of light when it passes from one medium to another called? (2015)
  • A. Reflection
  • B. Refraction
  • C. Diffraction
  • D. Dispersion
Q. What is the phenomenon of diffraction primarily associated with?
  • A. Reflection of light
  • B. Bending of waves around obstacles
  • C. Interference of waves
  • D. Polarization of light
Q. What is the phenomenon of diffraction primarily responsible for?
  • A. Bending of light around obstacles
  • B. Reflection of light
  • C. Refraction of light
  • D. Polarization of light
Q. What is the phenomenon of electromagnetic induction?
  • A. The generation of electric current by a changing magnetic field
  • B. The generation of magnetic field by a changing electric current
  • C. The interaction between electric and magnetic fields
  • D. The conversion of mechanical energy into electrical energy
Q. What is the phenomenon of polarization in light?
  • A. The splitting of light into different colors
  • B. The alignment of light waves in a particular direction
  • C. The reflection of light off a surface
  • D. The bending of light as it passes through a medium
Q. What is the photoelectric effect primarily used for in technology?
  • A. Solar panels
  • B. LEDs
  • C. Lasers
  • D. Television screens
Q. What is the photoelectric effect?
  • A. Emission of electrons from a metal surface when light shines on it
  • B. Absorption of light by a metal surface
  • C. Reflection of light from a metal surface
  • D. Transmission of light through a metal surface
Q. What is the pKa of acetic acid?
  • A. 4.76
  • B. 5.76
  • C. 3.76
  • D. 6.76
Q. What is the pKa range of most carboxylic acids?
  • A. 0-1
  • B. 4-5
  • C. 8-9
  • D. 10-11
Q. What is the pKa value of acetic acid?
  • A. 4.76
  • B. 7.00
  • C. 9.25
  • D. 2.00
Q. What is the pKb value of a strong base?
  • A. Less than 0
  • B. Equal to 0
  • C. Greater than 0
  • D. Equal to 14
Q. What is the pKb value of a weak base like aniline? (2020)
  • A. Less than 5
  • B. Around 9
  • C. Around 14
  • D. Greater than 15
Q. What is the pKb value of a weak base like methylamine?
  • A. Less than 7
  • B. Equal to 7
  • C. Greater than 7
  • D. Undefined
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