Major Competitive Exams

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Q. Which of the following statements is true about the image formed by a convex lens? (2021)
  • A. Always real
  • B. Always virtual
  • C. Can be real or virtual
  • D. Always inverted
Q. Which of the following statements is true about the image formed by a plane mirror? (2022)
  • A. It is real and inverted
  • B. It is virtual and erect
  • C. It is diminished
  • D. It is always located behind the mirror
Q. Which of the following statements is true about the inverse of a function?
  • A. The inverse of a function is always a function.
  • B. The inverse of a function is not necessarily a function.
  • C. The inverse of a function is always linear.
  • D. The inverse of a function cannot be graphed.
Q. Which of the following statements is true about the kinetic molecular theory of gases?
  • A. Gas particles have significant volume
  • B. Gas particles attract each other
  • C. Gas particles are in constant random motion
  • D. Gas particles do not collide
Q. Which of the following statements is true about the law of conservation of energy?
  • A. Energy can be created
  • B. Energy can be destroyed
  • C. Energy can be transformed
  • D. Energy is always lost
Q. Which of the following statements is true about the magnetic field due to a current-carrying loop? (2020)
  • A. It is uniform everywhere
  • B. It is strongest at the center of the loop
  • C. It is zero at the center of the loop
  • D. It is strongest at the edges of the loop
Q. Which of the following statements is true about the magnetic field due to a long straight conductor? (2020)
  • A. It is uniform and constant
  • B. It decreases with distance from the conductor
  • C. It increases with distance from the conductor
  • D. It is only present at the ends of the conductor
Q. Which of the following statements is true about the magnetic field inside a solenoid? (2019)
  • A. It is zero
  • B. It is uniform and parallel to the axis
  • C. It varies with distance from the center
  • D. It is stronger at the ends
Q. Which of the following statements is true about the molecular orbital theory?
  • A. It only applies to diatomic molecules
  • B. It explains the magnetic properties of molecules
  • C. It does not consider electron spin
  • D. It is less accurate than valence bond theory
Q. Which of the following statements is true about the photoelectric effect?
  • A. It requires a minimum frequency of light
  • B. It occurs with any frequency of light
  • C. It is independent of light intensity
  • D. It can occur in a vacuum only
Q. Which of the following statements is true about the second law of thermodynamics?
  • A. Energy can be created
  • B. Entropy of an isolated system always decreases
  • C. Entropy of an isolated system always increases
  • D. Energy can be destroyed
Q. Which of the following statements is true about thermal equilibrium?
  • A. Heat flows from cold to hot
  • B. Heat flows from hot to cold
  • C. No heat flow occurs
  • D. Temperature is irrelevant
Q. Which of the following statements is true according to molecular orbital theory?
  • A. Bonding orbitals are higher in energy than antibonding orbitals.
  • B. Bonding orbitals are lower in energy than antibonding orbitals.
  • C. All molecular orbitals are degenerate.
  • D. Molecular orbitals do not influence bond length.
Q. Which of the following statements is true according to Ohm's Law? (2019)
  • A. Resistance is independent of temperature
  • B. Voltage is inversely proportional to current
  • C. Current is directly proportional to voltage
  • D. Resistance increases with increasing current
Q. Which of the following statements is true according to Raoult's Law?
  • A. The vapor pressure of a solution is always higher than that of the pure solvent.
  • B. The vapor pressure of a solution is lower than that of the pure solvent.
  • C. Raoult's Law applies only to ideal solutions.
  • D. The mole fraction of solute affects the vapor pressure of the solvent.
Q. Which of the following statements is true according to the first law of thermodynamics?
  • A. Energy can be created or destroyed.
  • B. Energy can only be transformed from one form to another.
  • C. The total energy of an isolated system decreases.
  • D. Heat and work are the same forms of energy.
Q. Which of the following statements is true according to the kinetic molecular theory?
  • A. Gas particles have significant volume
  • B. Gas particles are in constant motion
  • C. Gas particles attract each other
  • D. Gas particles do not collide
Q. Which of the following statements is true according to the kinetic theory of gases?
  • A. Gas molecules occupy a fixed volume.
  • B. Gas molecules have significant attractive forces between them.
  • C. Gas molecules are in constant random motion.
  • D. Gas molecules do not collide with each other.
Q. Which of the following statements is true according to the second law of thermodynamics?
  • A. Energy can be created
  • B. Entropy of the universe decreases
  • C. Heat cannot spontaneously flow from a colder body to a hotter body
  • D. All processes are reversible
Q. Which of the following statements is true based on the bar graph depicting the population of various cities?
  • A. City A has a larger population than City B.
  • B. City C has the smallest population.
  • C. City D's population is equal to City A.
  • D. City B is the most populous.
Q. Which of the following statements is true based on the bar graph depicting the population growth of cities?
  • A. City A grew faster than City B
  • B. City B had a steady growth
  • C. City C's growth was the highest
  • D. City D's growth was negative
Q. Which of the following statements is true based on the data in the table?
  • A. Product D had the lowest sales in Q1
  • B. Product A consistently outperformed Product B
  • C. Product C had a spike in sales in Q3
  • D. Product B's sales were the same in Q1 and Q3
Q. Which of the following statements is true for a converging lens?
  • A. It can only form real images.
  • B. It can only form virtual images.
  • C. It can form both real and virtual images.
  • D. It cannot form images.
Q. Which of the following statements is true for a convex lens?
  • A. It can produce only real images.
  • B. It can produce only virtual images.
  • C. It can produce both real and virtual images.
  • D. It has a negative focal length.
Q. Which of the following statements is true for a convex mirror? (2020)
  • A. It forms real images
  • B. It forms virtual images
  • C. It has a negative focal length
  • D. Both b and c
Q. Which of the following statements is true for a diverging lens?
  • A. It always forms real images
  • B. It can form virtual images
  • C. It has a positive focal length
  • D. It converges light rays
Q. Which of the following statements is true for a galvanic cell? (2020)
  • A. It converts chemical energy to electrical energy
  • B. It requires an external power source
  • C. It is always non-spontaneous
  • D. It operates at constant temperature only
Q. Which of the following statements is true for a plane mirror? (2023)
  • A. The image is real
  • B. The image is virtual
  • C. The image is inverted
  • D. The image is smaller than the object
Q. Which of the following statements is true for a satellite in a stable orbit?
  • A. It requires continuous propulsion.
  • B. It moves in a straight line.
  • C. It is acted upon by gravitational force.
  • D. It has zero velocity.
Q. Which of the following statements is true for an adiabatic process?
  • A. Heat is exchanged with the surroundings
  • B. The system is insulated from heat transfer
  • C. Temperature remains constant
  • D. Pressure remains constant
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