Major Competitive Exams

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Q. What is the role of the filament in a flower? (2022)
  • A. To support the anther
  • B. To attract pollinators
  • C. To produce ovules
  • D. To receive pollen
Q. What is the role of the galvanometer in a potentiometer circuit?
  • A. To measure current
  • B. To measure resistance
  • C. To indicate the balance point
  • D. To provide a reference voltage
Q. What is the role of the galvanometer in a Wheatstone bridge?
  • A. To measure voltage
  • B. To measure current
  • C. To detect balance
  • D. To provide power
Q. What is the role of the Golgi apparatus in the cell?
  • A. Energy production
  • B. Modification and packaging of proteins
  • C. Cell division
  • D. Photosynthesis
Q. What is the role of the immune system? (2022)
  • A. Digest food
  • B. Transport nutrients
  • C. Fight diseases
  • D. Regulate hormones
Q. What is the role of the jockey in a potentiometer setup?
  • A. To connect the circuit
  • B. To measure current
  • C. To find the balance point
  • D. To provide a fixed voltage
Q. What is the role of the jockey in a potentiometer?
  • A. To measure current
  • B. To connect the circuit
  • C. To find the null point
  • D. To provide a reference voltage
Q. What is the role of the loop of Henle in the nephron? (2023)
  • A. Reabsorption of water
  • B. Secretion of urea
  • C. Filtration of blood
  • D. Regulation of pH
Q. What is the role of the lymphatic system in the human body? (2023)
  • A. Transporting oxygen
  • B. Removing waste products
  • C. Regulating blood pressure
  • D. Transporting lymph and immune cells
Q. What is the role of the M checkpoint in the cell cycle? (2023)
  • A. To check for DNA damage
  • B. To ensure chromosomes are properly aligned
  • C. To initiate DNA replication
  • D. To signal the end of cytokinesis
Q. What is the role of the ovary in a flower? (2022)
  • A. Produces nectar
  • B. Contains ovules
  • C. Supports the anther
  • D. Attracts insects
Q. What is the role of the ovary in the female reproductive system? (2021)
  • A. Production of sperm
  • B. Production of eggs
  • C. Fertilization of eggs
  • D. Nourishment of the fetus
Q. What is the role of the pancreas in digestion? (2023)
  • A. Secretes bile
  • B. Produces digestive enzymes
  • C. Absorbs nutrients
  • D. Stores food
Q. What is the role of the phase change upon reflection in thin film interference?
  • A. It enhances constructive interference
  • B. It enhances destructive interference
  • C. It has no effect
  • D. It changes the wavelength
Q. What is the role of the plasma membrane? (2021)
  • A. Energy production
  • B. Transport of substances
  • C. Protein synthesis
  • D. Genetic information storage
Q. What is the role of the refractive index in thin film interference?
  • A. It determines the wavelength of light
  • B. It affects the phase change upon reflection
  • C. It has no effect
  • D. It only affects the intensity
Q. What is the role of the respiratory system?
  • A. To break down food
  • B. To exchange gases
  • C. To circulate blood
  • D. To protect against pathogens
Q. What is the role of the spleen in the human body? (2021)
  • A. Production of insulin
  • B. Filtration of blood
  • C. Digestion of food
  • D. Respiration
Q. What is the role of the stigma in a flower? (2019)
  • A. To produce ovules
  • B. To receive pollen
  • C. To support the flower
  • D. To attract insects
Q. What is the role of the synapse in neural communication? (2022)
  • A. To generate action potentials
  • B. To connect two neurons
  • C. To insulate the axon
  • D. To store neurotransmitters
Q. What is the role of the synaptic cleft? (2022)
  • A. To connect two neurons
  • B. To store neurotransmitters
  • C. To facilitate the transmission of signals between neurons
  • D. To protect the neuron from damage
Q. What is the role of the synovial fluid in joints? (2022)
  • A. Provides nutrients to cartilage
  • B. Acts as a lubricant
  • C. Absorbs shock
  • D. All of the above
Q. What is the role of vaccines in health? (2023)
  • A. Cure diseases
  • B. Prevent diseases
  • C. Diagnose diseases
  • D. None of the above
Q. What is the role of xylem in plants?
  • A. Transport of nutrients
  • B. Transport of water
  • C. Photosynthesis
  • D. Storage of food
Q. What is the role of yeast in baking? (2022)
  • A. Fermentation
  • B. Decomposition
  • C. Photosynthesis
  • D. Respiration
Q. What is the root mean square (RMS) value of an alternating current (AC) if its peak value is 10 A?
  • A. 5 A
  • B. 7.07 A
  • C. 10 A
  • D. 14.14 A
Q. What is the root mean square (RMS) value of an alternating current (AC) that has a peak value of 10 A?
  • A. 5 A
  • B. 7.07 A
  • C. 10 A
  • D. 14.14 A
Q. What is the root mean square speed of gas molecules at a temperature T? (2021)
  • A. √(3RT/M)
  • B. √(RT/M)
  • C. √(2RT/M)
  • D. √(3kT/m)
Q. What is the root mean square speed of gas molecules at temperature T?
  • A. (3RT/M)^0.5
  • B. (RT/M)^0.5
  • C. (2RT/M)^0.5
  • D. (RT/3M)^0.5
Q. What is the root mean square speed of gas molecules directly proportional to?
  • A. The square root of the temperature.
  • B. The square of the temperature.
  • C. The mass of the gas molecules.
  • D. The volume of the gas.
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