Q. What is the primary method of reproduction in bacteria? (2021)
  • A. Binary fission
  • B. Budding
  • C. Fragmentation
  • D. Sexual reproduction
Q. What is the primary mode of nutrition in the kingdom Animalia? (2023)
  • A. Autotrophic
  • B. Heterotrophic
  • C. Saprophytic
  • D. Parasitic
Q. What is the primary mode of nutrition in the kingdom Plantae? (2022)
  • A. Heterotrophic
  • B. Saprophytic
  • C. Autotrophic
  • D. Parasitic
Q. What is the primary mode of reproduction in angiosperms? (2023)
  • A. Asexual reproduction
  • B. Budding
  • C. Fission
  • D. Sexual reproduction
Q. What is the primary mode of reproduction in ferns? (2023)
  • A. Asexual reproduction
  • B. Sexual reproduction
  • C. Vegetative propagation
  • D. Budding
Q. What is the primary mode of reproduction in unicellular organisms? (2020)
  • A. Asexual reproduction
  • B. Sexual reproduction
  • C. Binary fission
  • D. Budding
Q. What is the primary muscle involved in the process of breathing? (2021)
  • A. Diaphragm
  • B. Intercostal muscles
  • C. Abdominal muscles
  • D. Pectoral muscles
Q. What is the primary oxidation state of carbon in carbon dioxide (CO2)? (2020)
  • A. +2
  • B. +4
  • C. 0
  • D. -4
Q. What is the primary oxidation state of iron in FeCl3? (2023)
  • A. +2
  • B. +3
  • C. +4
  • D. +6
Q. What is the primary oxidation state of lead in lead(II) oxide (PbO)? (2019)
  • A. +2
  • B. +4
  • C. 0
  • D. -2
Q. What is the primary oxidation state of nitrogen in ammonia (NH3)? (2021)
  • A. -3
  • B. +1
  • C. +3
  • D. +5
Q. What is the primary oxidation state of nitrogen in nitric acid (HNO3)? (2023)
  • A. +1
  • B. +3
  • C. +5
  • D. 0
Q. What is the primary oxidation state of vanadium in V2O5? (2023)
  • A. +3
  • B. +4
  • C. +5
  • D. +6
Q. What is the primary pollutant in smog? (2021)
  • A. Carbon monoxide
  • B. Sulfur dioxide
  • C. Nitrogen oxides
  • D. Particulate matter
Q. What is the primary process by which energy enters an ecosystem? (2022)
  • A. Respiration
  • B. Photosynthesis
  • C. Decomposition
  • D. Transpiration
Q. What is the primary producer in a freshwater ecosystem? (2022)
  • A. Fish
  • B. Algae
  • C. Fungi
  • D. Bacteria
Q. What is the primary producer in a terrestrial ecosystem? (2019)
  • A. Herbivores
  • B. Carnivores
  • C. Plants
  • D. Decomposers
Q. What is the primary product of nuclear fission? (2019)
  • A. Energy
  • B. Neutrons
  • C. Protons
  • D. Alpha particles
Q. What is the primary product of the electrolysis of water? (2023)
  • A. Hydrogen
  • B. Oxygen
  • C. Hydrogen Peroxide
  • D. Ozone
Q. What is the primary product of the fission of Uranium-235? (2019)
  • A. Helium
  • B. Neutrons
  • C. Barium and Krypton
  • D. Carbon
Q. What is the primary product of the fusion of hydrogen nuclei in stars? (2022)
  • A. Helium
  • B. Carbon
  • C. Oxygen
  • D. Nitrogen
Q. What is the primary product of the fusion of hydrogen nuclei? (2022)
  • A. Helium
  • B. Carbon
  • C. Oxygen
  • D. Deuterium
Q. What is the primary product of the reaction between hydrogen and chlorine? (2019)
  • A. Hydrochloric acid
  • B. Hydrogen chloride
  • C. Chlorine gas
  • D. Water
Q. What is the primary product of the thermal decomposition of calcium carbonate? (2019)
  • A. Calcium oxide
  • B. Calcium hydroxide
  • C. Calcium bicarbonate
  • D. Calcium chloride
Q. What is the primary product when aluminum reacts with hydrochloric acid? (2020)
  • A. AlCl3
  • B. H2
  • C. Al(OH)3
  • D. Al2Cl6
Q. What is the primary product when calcium reacts with oxygen? (2022)
  • A. Calcium oxide
  • B. Calcium hydroxide
  • C. Calcium carbonate
  • D. Calcium peroxide
Q. What is the primary product when lithium reacts with nitrogen? (2022)
  • A. Lithium nitride
  • B. Lithium oxide
  • C. Lithium hydroxide
  • D. Lithium carbonate
Q. What is the primary product when potassium permanganate (KMnO4) is reduced in acidic medium? (2019)
  • A. MnO2
  • B. Mn2+
  • C. MnO4-
  • D. KMnO4
Q. What is the primary purpose of petals in a flower? (2023)
  • A. To produce seeds
  • B. To attract pollinators
  • C. To support the flower
  • D. To protect the ovary
Q. What is the primary purpose of reproduction in organisms? (2020)
  • A. To increase genetic diversity
  • B. To maintain homeostasis
  • C. To produce energy
  • D. To ensure survival of the species
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