Introduction MCQ 116+

Test your knowledge with important Introduction MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 146 + more Introduction MCQs at Bissoy

• The process by which the methanogens produce methane is called _______
  ক

  Bio-methanation

  খ

  Bio-luminescence

  গ

  Bio-leaching

  ঘ

  Bio-fortification
• Which of the following doesn’t include the activity of microorganisms?
  ক

  Bio-magnification

  খ

  Bio-remediation

  গ

  Bio-degradation

  ঘ

  Bio-leaching
• Calculate the BOD value for the sample below including the minimum depletion and residual requirements. Sample (ml)-100ml in 300ml bottle Initial D.O (mg/ml): 9.2 5-days D.O (mg/ml): 5.3
  ক

  9.1

  খ

  9.75

  গ

  11

  ঘ

  9
• Which of the following bacteria can generate electricity, thereby reducing the environmental toxic pollutants?
  ক

  Thermus aquaticus

  খ

  Bacillus thuringenesis

  গ

  Shewanella

  ঘ

  Mycobacterium tuberculosis
• Which of the following is a bio-indicator of metal pollution?
  ক

  Mytilus edulis

  খ

  E.coli

  গ

  Lichens

  ঘ

  Microalage
• The increase of toxicity level, when we go from lower cellular complexities to higher cellular complexities is called as _____
  ক

  Bio-magnification

  খ

  Quorum quenching

  গ

  Quorum requirement

  ঘ

  Lyophilization
• Which among the following is a process of bio remediation?
  ক

  Chemical Testing method

  খ

  Most probable number method

  গ

  Dissolved Oxygen method

  ঘ

  Immobilization
• The process that results in conversion of environmental contaminants into less toxic substances with the help of microbiological processes is called as ______
  ক

  Bio-fortification

  খ

  Bio-remediation

  গ

  Bio-leaching

  ঘ

  Microbiology
• What is the cause behind irrecoverable environmental damage?
  ক

  Oil spills in sea

  খ

  Afforestation

  গ

  Sewage

  ঘ

  Biogas
• Which contaminants among the following leads to environment pollution?
  ক

  CO2

  খ

  Heavy metals and explosive

  গ

  Fertilizer

  ঘ

  Methane gas
• What kind of specificity does glucose oxidase exhibit?
  ক

  Absolute specificity

  খ

  Group specificity

  গ

  Stereospecificity

  ঘ

  Regiospecificity
• Trypsin exhibits which kind of specificity?
  ক

  Absolute specificity

  খ

  Group specificity

  গ

  Stereospecificity

  ঘ

  Regiospecificity
• Enzymes discriminate between similar parts of same molecules. This is termed as __________
  ক

  Stereospecificity

  খ

  Absolute specificity

  গ

  Regiospecificity

  ঘ

  Group specificity
• Enzymes work under mild conditions of temperature and pH.
  ক

  True

  খ

  False
• ____________ mediates the synthetic and degradative reactions carried out by living organism.
  ক

  Cofactor

  খ

  Coenzyme

  গ

  Enzymes

  ঘ

  Vitamins
• Which of the following is an advantage of enzymes over chemical catalysts?
  ক

  High productivity, less material cost

  খ

  High cost of enzyme isolation

  গ

  High cost of enzyme purification

  ঘ

  Unstable nature of enzymes
• Major drawback of utilizing enzymes is _________
  ক

  high productivity

  খ

  specificity

  গ

  selectivity

  ঘ

  unstable nature of enzymes
• Absolute specificity, group specificity and optical specificity are observed by chemical catalyst.
  ক

  True

  খ

  False
• Enzymes are the polymers of ___________
  ক

  fatty acids

  খ

  amino acids

  গ

  hexose carbon

  ঘ

  organic phosphate
• All proteins are not enzymes.
  ক

  True

  খ

  False
• Catalyst discovered from biological sources are referred to as ___________
  ক

  vitamins

  খ

  carbohydrates

  গ

  enzymes

  ঘ

  nucleic acids
• Fluorescent X-ray spectrometers would require only moderate-intensity X-ray tubes.
  ক

  True

  খ

  False
• In X-ray fluorescence spectrometer, the relationship between the excitation intensity and the intensity of fluorescence does not depend on which of the following?
  ক

  Spectrum of the incident radiation

  খ

  Angle of radiance

  গ

  Molecular weight

  ঘ

  Incident angle
• The problem of spectral interference is not severe in X-ray spectroscopy.
  ক

  True

  খ

  False
• Which of the following is Mosely’s equation if ‘C’ is the speed of light, ‘a’ is proportionality constant, ‘σ’ is a constant which depends on electronic transition series, ‘Z’ is the atomic number and ‘λ’ is the wavelength?
  ক

  Cλ= a(Z-σ)2

  খ

  C/λ= a(Z-σ)2

  গ

  C(Z-σ)2= aλ

  ঘ

  C(Z-σ)2= a/λ
• The energy of the emitted X-rays depends upon the _________ of the atom and their intensity depends upon the __________
  ক

  Atomic number, amount of sample

  খ

  Mass number, amount of sample

  গ

  Mass number, concentration of atoms

  ঘ

  Atomic number, concentration of atoms
• The measurement of intensity of fluorescent X-rays provide a simple and ____________ way of _____________ analysis.
  ক

  Destructive, quantitative

  খ

  Non-destructive, quantitative

  গ

  Destructive, qualitative

  ঘ

  Non-destructive, qualitative
• Prompt emission of X-ray by an atom ionised by a higher energy X-ray is a type of which of the following phenomena?
  ক

  Luminescence

  খ

  Fluorescence

  গ

  Phosphorescence

  ঘ

  Spontaneous emission
• If the absorption of electromagnetic radiation by matter results in the emission of radiation of the same or longer wavelengths for a long time, the phenomenon is termed as which of the following?
  ক

  Luminescence

  খ

  Fluorescence

  গ

  Phosphorescence

  ঘ

  Spontaneous emission
• If the absorption of electromagnetic radiation by matter results in the emission of radiation of the same or longer wavelengths for a short time, the phenomenon is termed as which of the following?
  ক

  Luminescence

  খ

  Fluorescence

  গ

  Phosphorescence

  ঘ

  Spontaneous emission