Major Competitive Exams

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Q. What is the main purpose of reproduction in organisms? (2020)
  • A. To maintain homeostasis
  • B. To produce energy
  • C. To ensure species survival
  • D. To grow and develop
Q. What is the main purpose of respiration in plants? (2023)
  • A. To produce glucose
  • B. To release energy
  • C. To absorb water
  • D. To synthesize proteins
Q. What is the main purpose of sexual reproduction? (2020)
  • A. To produce more offspring
  • B. To create genetic diversity
  • C. To ensure survival of the species
  • D. To reduce competition
Q. What is the main purpose of taxation? (2020)
  • A. To control inflation
  • B. To fund government spending
  • C. To reduce unemployment
  • D. To promote exports
Q. What is the main purpose of the acrosome in sperm? (2022)
  • A. To provide energy
  • B. To penetrate the egg
  • C. To store genetic material
  • D. To aid in motility
Q. What is the main purpose of the amniotic fluid? (2023)
  • A. Protection of the fetus
  • B. Nourishment of the fetus
  • C. Gas exchange
  • D. Hormonal regulation
Q. What is the main purpose of the author's use of statistics in the passage? (2023)
  • A. To confuse the reader
  • B. To support an argument
  • C. To entertain
  • D. To provide background information
Q. What is the main purpose of the G1 phase in the cell cycle? (2022)
  • A. DNA replication
  • B. Cell growth and preparation for DNA synthesis
  • C. Chromosome separation
  • D. Cell division
Q. What is the main purpose of the menstrual cycle? (2023)
  • A. To prepare the body for pregnancy
  • B. To produce sperm
  • C. To regulate hormone levels
  • D. To eliminate waste
Q. What is the main purpose of the passage discussing the effects of urbanization?
  • A. To highlight the benefits of urban living.
  • B. To argue against urban development.
  • C. To discuss the challenges posed by urbanization.
  • D. To promote rural living as a better alternative.
Q. What is the main purpose of the passage?
  • A. To argue against climate change.
  • B. To inform readers about the effects of climate change.
  • C. To persuade readers to take action against climate change.
  • D. To discuss the history of climate science.
Q. What is the main purpose of the S phase in the cell cycle? (2022)
  • A. Cell growth
  • B. DNA replication
  • C. Cell division
  • D. Protein synthesis
Q. What is the main purpose of using antioxidants in food?
  • A. Enhance color
  • B. Prevent oxidation
  • C. Improve taste
  • D. Increase shelf life
Q. What is the main purpose of using baking soda in cooking?
  • A. Flavoring
  • B. Leavening
  • C. Preserving
  • D. Coloring
Q. What is the main purpose of using biopesticides in agriculture? (2023)
  • A. Increase crop yield
  • B. Reduce chemical pesticide use
  • C. Enhance soil fertility
  • D. Improve water retention
Q. What is the main purpose of using bioreactors in biotechnology? (2023)
  • A. To produce energy
  • B. To grow microorganisms or cells
  • C. To purify proteins
  • D. To store genetic material
Q. What is the main purpose of using different base systems in mathematics and computing? (2023)
  • A. To confuse users.
  • B. To simplify calculations.
  • C. To represent data in various formats.
  • D. To limit the number of digits used.
Q. What is the main purpose of using fluoride in dental care?
  • A. Whiten teeth
  • B. Prevent cavities
  • C. Freshen breath
  • D. Strengthen gums
Q. What is the main purpose of using genetically modified crops? (2023)
  • A. To produce more flowers
  • B. To enhance flavor
  • C. To improve resistance to diseases
  • D. To reduce labor costs
Q. What is the main purpose of using significant figures in measurements? (2019)
  • A. To increase the number of digits
  • B. To indicate precision
  • C. To simplify calculations
  • D. To convert units
Q. What is the main reaction of phenols with bromine water? (2020)
  • A. No reaction
  • B. Formation of brominated phenol
  • C. Formation of phenyl ether
  • D. Formation of phenol red
Q. What is the main reaction of phenols with sodium hydroxide? (2020)
  • A. Formation of sodium phenoxide
  • B. Formation of ether
  • C. Formation of alcohol
  • D. Formation of ketone
Q. What is the main reaction type when alcohols are converted to alkyl halides?
  • A. Substitution
  • B. Elimination
  • C. Addition
  • D. Redox
Q. What is the main reason for the appearance of a diffraction pattern when light passes through a narrow slit?
  • A. Interference of light waves
  • B. Refraction of light
  • C. Absorption of light
  • D. Reflection of light
Q. What is the main reason for the existence of geometric isomers?
  • A. Presence of double bonds
  • B. Presence of single bonds
  • C. Presence of chiral centers
  • D. Presence of functional groups
Q. What is the main reason for the occurrence of seasons on Earth?
  • A. Distance from the Sun
  • B. Tilt of the Earth's axis
  • C. Revolution around the Sun
  • D. Rotation of the Earth
Q. What is the main reason for the stability of aromatic compounds?
  • A. High molecular weight
  • B. Presence of double bonds
  • C. Resonance energy
  • D. Hydrogen bonding
Q. What is the main reason for the stability of atomic nuclei?
  • A. Electromagnetic force
  • B. Gravitational force
  • C. Strong nuclear force
  • D. Weak nuclear force
Q. What is the main reason for the stability of benzene?
  • A. Presence of double bonds
  • B. Resonance
  • C. Hydrogen bonding
  • D. Ionic interactions
Q. What is the main reason for the stability of the electron in an atom? (2019)
  • A. Electrostatic attraction to the nucleus
  • B. High energy levels
  • C. Quantum tunneling
  • D. Magnetic forces
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