Major Competitive Exams

Q. In which of the following scenarios will a charged particle experience no magnetic force?
  • A. When moving parallel to the magnetic field
  • B. When moving perpendicular to the magnetic field
  • C. When at rest
  • D. Both A and C
Q. In which of the following scenarios will a charged particle experience the maximum magnetic force?
  • A. When moving parallel to the magnetic field
  • B. When moving perpendicular to the magnetic field
  • C. When at rest
  • D. When moving at an angle of 45 degrees
Q. In which of the following scenarios will a magnetic field be produced?
  • A. A stationary charge
  • B. A moving charge
  • C. A neutral atom
  • D. A charged particle at rest
Q. In which of the following scenarios will total internal reflection NOT occur?
  • A. Light traveling from diamond to air
  • B. Light traveling from water to air
  • C. Light traveling from air to glass
  • D. Light traveling from glass to air
Q. In which of the following scenarios will total internal reflection occur?
  • A. Light from air to water
  • B. Light from glass to air
  • C. Light from water to glass
  • D. Light from air to glass
Q. In which of the following scenarios would the entropy of the system decrease?
  • A. Ice melting
  • B. Water evaporating
  • C. Gas compressing
  • D. Sugar dissolving in water
Q. In which of the following scenarios would you expect a fluid to have lower viscosity?
  • A. At lower temperatures
  • B. At higher temperatures
  • C. Under high pressure
  • D. In a narrow pipe
Q. In which of the following scenarios would you expect a fluid to have the lowest viscosity?
  • A. High temperature
  • B. Low temperature
  • C. High pressure
  • D. Low pressure
Q. In which of the following scenarios would you expect to observe a decrease in viscosity?
  • A. Cooling a liquid
  • B. Heating a liquid
  • C. Increasing pressure
  • D. Adding a solute
Q. In which of the following scenarios would you expect to see the effects of viscosity most prominently?
  • A. A river flowing rapidly
  • B. Oil pouring from a bottle
  • C. Air moving around a plane
  • D. Water boiling
Q. In which of the following species does the molecular orbital configuration show a paramagnetic behavior?
  • A. N2
  • B. O2
  • C. F2
  • D. Ne2
Q. In which of the following states does a liquid exhibit the highest density?
  • A. At low temperatures
  • B. At high temperatures
  • C. At critical temperature
  • D. At boiling point
Q. In which of the following states of matter do particles have the least freedom of movement?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Q. In which process does a gas do work on its surroundings?
  • A. Isothermal expansion
  • B. Adiabatic compression
  • C. Isochoric process
  • D. Isobaric process
Q. In which process does heat transfer occur due to the movement of fluid?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Insulation
Q. In which process does heat transfer occur without any physical movement of the material?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. All of the above
Q. In which process does the entropy of the system decrease?
  • A. Freezing of water
  • B. Evaporation of water
  • C. Sublimation of dry ice
  • D. Dissolving salt in water
Q. In which scenario would the frictional force be at its maximum?
  • A. When an object is at rest
  • B. When an object is sliding
  • C. When an object is rolling
  • D. When an object is in free fall
Q. In which scenario would the Gibbs Free Energy of a system be at its minimum?
  • A. At equilibrium
  • B. At the start of a reaction
  • C. At maximum temperature
  • D. At maximum pressure
Q. In which scenario would total internal reflection NOT occur?
  • A. Light traveling from glass to air at a steep angle.
  • B. Light traveling from water to air at a shallow angle.
  • C. Light traveling from diamond to air at a high angle.
  • D. Light traveling from air to water at any angle.
Q. In which scenario would ΔG = 0?
  • A. At the start of a reaction.
  • B. At equilibrium.
  • C. When the reaction is spontaneous.
  • D. When the reaction is non-spontaneous.
Q. In which scenario would ΔG be equal to ΔH?
  • A. At absolute zero.
  • B. When ΔS = 0.
  • C. For a spontaneous reaction.
  • D. For an endothermic reaction.
Q. In which scenario would ΔG be zero?
  • A. At standard conditions
  • B. At equilibrium
  • C. In a spontaneous reaction
  • D. In a non-spontaneous reaction
Q. In which state of matter do particles have the highest kinetic energy?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Q. In which type of reaction is the change in enthalpy equal to the heat absorbed or released at constant pressure?
  • A. Endothermic reaction
  • B. Exothermic reaction
  • C. Isothermal reaction
  • D. Adiabatic reaction
Q. In Young's double-slit experiment, if the distance between the slits is 0.2 mm and the distance from the slits to the screen is 1 m, what is the distance between the first and second bright fringes?
  • A. 0.1 mm
  • B. 0.2 mm
  • C. 0.4 mm
  • D. 0.6 mm
Q. In Young's double-slit experiment, if the distance between the slits is 0.2 mm and the distance to the screen is 1 m, what is the fringe width if the wavelength of light used is 500 nm?
  • A. 0.1 mm
  • B. 0.2 mm
  • C. 0.5 mm
  • D. 0.8 mm
Q. In Young's double-slit experiment, if the distance between the slits is doubled while keeping the wavelength constant, what happens to the fringe width?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. In Young's double-slit experiment, if the distance between the slits is doubled, what happens to the fringe width?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. Is the function f(x) = x^2 - 2x + 1 differentiable at x = 1?
  • A. Yes
  • B. No
  • C. Only from the left
  • D. Only from the right
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