Major Competitive Exams

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Q. Which of the following statements about circularly polarized light is true?
  • A. It has no preferred direction of oscillation
  • B. It oscillates in a single plane
  • C. It can be converted to linearly polarized light
  • D. It is always produced by reflection
Q. Which of the following statements about colligative properties is true?
  • A. They depend on the identity of the solute
  • B. They depend on the number of solute particles
  • C. They are independent of temperature
  • D. They are only applicable to ionic compounds
Q. Which of the following statements about constraint-based sets is true?
  • A. All constraints are equal in importance.
  • B. Constraints can be hierarchical.
  • C. Constraints do not affect the outcome.
  • D. Constraints are always numerical.
Q. Which of the following statements about constraints in set theory is FALSE?
  • A. Constraints can be both inclusive and exclusive.
  • B. Constraints can change the nature of the set.
  • C. All constraints must be numerical.
  • D. Constraints help in defining subsets.
Q. Which of the following statements about coordination compounds is incorrect? (2023)
  • A. They can exhibit geometric isomerism.
  • B. They can exhibit optical isomerism.
  • C. All coordination compounds are colored.
  • D. They can form complexes with transition metals.
Q. Which of the following statements about diffraction gratings is true?
  • A. They can only produce first-order maxima
  • B. They can produce multiple orders of maxima
  • C. They do not produce any maxima
  • D. They only work with monochromatic light
Q. Which of the following statements about diffraction is true?
  • A. Diffraction can occur with any type of wave
  • B. Diffraction only occurs with sound waves
  • C. Diffraction is only observed in light waves
  • D. Diffraction is a phenomenon exclusive to electromagnetic waves
Q. Which of the following statements about dynamic equilibrium is true?
  • A. The concentrations of reactants and products are equal
  • B. The rate of the forward reaction equals the rate of the reverse reaction
  • C. The reaction has stopped
  • D. The system is at rest
Q. Which of the following statements about elastic potential energy stored in a stretched wire is true?
  • A. It is proportional to the square of the extension
  • B. It is proportional to the extension
  • C. It is independent of the material
  • D. It is always constant
Q. Which of the following statements about electric field lines is true?
  • A. They can cross each other
  • B. They are always straight
  • C. They point from positive to negative charges
  • D. They are always circular
Q. Which of the following statements about electromagnetic waves is true?
  • A. They require a medium to propagate
  • B. They travel at the speed of sound
  • C. They are transverse waves
  • D. They are longitudinal waves
Q. Which of the following statements about electrons is true?
  • A. They have a positive charge
  • B. They are found in the nucleus
  • C. They have a negligible mass
  • D. They are stationary
Q. Which of the following statements about enthalpy is true?
  • A. Enthalpy is an extensive property.
  • B. Enthalpy is an intensive property.
  • C. Enthalpy cannot be measured directly.
  • D. Enthalpy is always positive.
Q. Which of the following statements about entropy is true?
  • A. Entropy is a measure of disorder.
  • B. Entropy decreases in spontaneous processes.
  • C. Entropy is always constant.
  • D. Entropy cannot be calculated.
Q. Which of the following statements about equilibrium constants is true?
  • A. K is temperature dependent
  • B. K is pressure dependent
  • C. K is concentration dependent
  • D. K is always equal to 1
Q. Which of the following statements about ethers is true?
  • A. Ethers are more polar than alcohols
  • B. Ethers have higher boiling points than alcohols
  • C. Ethers are less reactive than alcohols
  • D. Ethers can form hydrogen bonds with water
Q. Which of the following statements about evolution is true? (2000)
  • A. Evolution is a linear process.
  • B. Evolution can occur in response to environmental changes.
  • C. All traits are adaptive.
  • D. Evolution results in perfect organisms.
Q. Which of the following statements about exponents is false?
  • A. a^m * a^n = a^(m+n)
  • B. a^m / a^n = a^(m-n)
  • C. a^0 = 0
  • D. a^(-n) = 1/a^n
Q. Which of the following statements about exponents is incorrect?
  • A. a^(m+n) = a^m * a^n
  • B. a^(m-n) = a^m / a^n
  • C. a^m * b^m = (ab)^m
  • D. a^m + a^n = a^(m+n)
Q. Which of the following statements about factors is incorrect?
  • A. Every number has at least two factors.
  • B. Factors can be negative.
  • C. The number itself is always a factor.
  • D. Factors of a prime number are only 1 and the number itself.
Q. Which of the following statements about fluids is true?
  • A. Fluids can only flow in one direction
  • B. Fluids have a definite shape
  • C. Fluids can exert pressure in all directions
  • D. Fluids are incompressible
Q. Which of the following statements about gases is true? (2022)
  • A. Gases have a definite shape and volume
  • B. Gases are incompressible
  • C. Gases fill the entire volume of their container
  • D. Gases have a fixed molecular arrangement
Q. Which of the following statements about geometric progressions is true?
  • A. The ratio of consecutive terms is constant.
  • B. The sum of terms is always positive.
  • C. The first term must be greater than the second.
  • D. The common ratio can only be an integer.
Q. Which of the following statements about geostationary satellites is true?
  • A. They orbit the Earth in a polar orbit
  • B. They have a period of 24 hours
  • C. They are closer to the Earth than low Earth orbit satellites
  • D. They can be used for global positioning
Q. Which of the following statements about gravitational potential energy (U) is true?
  • A. U increases as two masses move closer together
  • B. U decreases as two masses move closer together
  • C. U is always positive
  • D. U is independent of distance
Q. Which of the following statements about gravitational potential energy is true?
  • A. It is always positive.
  • B. It can be negative.
  • C. It is independent of the reference point.
  • D. It increases with distance.
Q. Which of the following statements about haloalkanes is true?
  • A. They are polar compounds
  • B. They are non-polar compounds
  • C. They do not react with nucleophiles
  • D. They are always solids
Q. Which of the following statements about harmonic progression is true?
  • A. The sum of the terms is always positive.
  • B. The terms can be negative.
  • C. The terms are always integers.
  • D. The common difference is always positive.
Q. Which of the following statements about hybrid sets is true?
  • A. Hybrid sets can only contain numerical elements.
  • B. The union of two hybrid sets is always a hybrid set.
  • C. Hybrid sets cannot be empty.
  • D. The intersection of two hybrid sets is always empty.
Q. Which of the following statements about hydrogen is incorrect? (2019)
  • A. Hydrogen is the lightest element.
  • B. Hydrogen can form covalent bonds.
  • C. Hydrogen exists as a diatomic molecule in nature.
  • D. Hydrogen is a metal at room temperature.
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