Major Competitive Exams

Q. Which of the following statements is true regarding the moment of inertia?
  • A. It depends on the mass distribution
  • B. It is always constant
  • C. It is independent of the axis of rotation
  • D. It is only relevant for rigid bodies
Q. Which of the following statements is true regarding the photoelectric effect?
  • A. Electrons are emitted only if the light is of high intensity
  • B. Electrons are emitted regardless of the frequency of light
  • C. There is a threshold frequency below which no electrons are emitted
  • D. The photoelectric effect can occur with any type of electromagnetic radiation
Q. Which of the following statements is true regarding the rate of a reaction?
  • A. It increases with increasing temperature
  • B. It decreases with increasing concentration
  • C. It is constant for all reactions
  • D. It is independent of the nature of reactants
Q. Which of the following statements is true regarding the rate of reaction?
  • A. It is always constant
  • B. It decreases with time for a reactant
  • C. It increases with time for a product
  • D. Both B and C
Q. Which of the following statements is true regarding the second law of thermodynamics?
  • A. It allows for the conversion of heat into work with 100% efficiency
  • B. It states that energy can be created from nothing
  • C. It introduces the concept of entropy
  • D. It applies only to mechanical systems
Q. Which of the following statements is true regarding the use of a potentiometer?
  • A. It can measure current directly
  • B. It requires a galvanometer for operation
  • C. It can only measure AC voltages
  • D. It is not affected by the internal resistance of the source
Q. Which of the following statements is true regarding the Van der Waals equation?
  • A. It accounts for the volume of gas particles.
  • B. It is only applicable to ideal gases.
  • C. It does not consider intermolecular forces.
  • D. It is a linear equation.
Q. Which of the following statements is true regarding the Wheatstone bridge?
  • A. It can only measure AC resistances
  • B. It can measure unknown resistances
  • C. It requires a power source to operate
  • D. It is only used in high voltage applications
Q. Which of the following statements is true regarding thermal conductivity? (2023)
  • A. It is higher in gases than in solids
  • B. It is a measure of a material's ability to conduct heat
  • C. It increases with temperature
  • D. It is independent of material properties
Q. Which of the following statements is true regarding total internal reflection?
  • A. It occurs when light travels from a denser to a rarer medium.
  • B. It occurs when light travels from a rarer to a denser medium.
  • C. It can occur at any angle.
  • D. It requires a prism.
Q. Which of the following states of matter can be compressed the most?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Q. Which of the following states of matter has a definite shape and volume?
  • A. Gas
  • B. Liquid
  • C. Solid
  • D. Plasma
Q. Which of the following states of matter has a definite shape?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Q. Which of the following states of matter has a definite volume but no definite shape?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Q. Which of the following states of matter has the highest density?
  • A. Gas
  • B. Liquid
  • C. Solid
  • D. Plasma
Q. Which of the following states of matter has the highest kinetic energy? (2022)
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Q. Which of the following states of matter has the least amount of energy?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Q. Which of the following states of matter has the least amount of kinetic energy?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. Plasma
Q. Which of the following states of matter has the least intermolecular forces?
  • A. Solid
  • B. Liquid
  • C. Gas
  • D. All are equal
Q. Which of the following structures has the highest packing efficiency? (2019)
  • A. Simple cubic
  • B. Body-centered cubic
  • C. Face-centered cubic
  • D. Hexagonal close-packed
Q. Which of the following structures is responsible for the production of red blood cells? (2019)
  • A. Liver
  • B. Spleen
  • C. Bone marrow
  • D. Thymus
Q. Which of the following substances is NOT typically found in urine? (2022)
  • A. Urea
  • B. Glucose
  • C. Creatinine
  • D. Uric acid
Q. Which of the following surfaces is the best emitter of radiation?
  • A. Shiny surface
  • B. Dull black surface
  • C. White surface
  • D. Transparent surface
Q. Which of the following surfaces is the best emitter of thermal radiation?
  • A. Shiny metal
  • B. White paint
  • C. Black paint
  • D. Glass
Q. Which of the following techniques is commonly used to determine protein structure?
  • A. Mass spectrometry
  • B. Nuclear magnetic resonance (NMR)
  • C. X-ray crystallography
  • D. Both B and C
Q. Which of the following techniques is commonly used to separate proteins based on their size?
  • A. Chromatography
  • B. Electrophoresis
  • C. Spectroscopy
  • D. Centrifugation
Q. Which of the following techniques is used for the production of monoclonal antibodies? (2020)
  • A. Hybridoma technology
  • B. Gene editing
  • C. CRISPR-Cas9
  • D. Fermentation
Q. Which of the following terms describes the physical appearance of an organism? (2023)
  • A. Genotype
  • B. Phenotype
  • C. Allele
  • D. Locus
Q. Which of the following transition metals can exhibit a +5 oxidation state?
  • A. Vanadium
  • B. Chromium
  • C. Manganese
  • D. Iron
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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