Description : To improve a chromatographic separation, you must A. Increase the number of theoretical plates on the column. B. Increase the height of the theoretical plates on the column. C. Increase both the number ... the column. D. Decrease both the number and the height of the theoretical plates on the column
Last Answer : Increase the number of theoretical plates on the column
Description : The fluid exiting a chromatographic column is called the A. eluent B. eluate C. analyte D. elution
Last Answer : eluate
Description : The base peak in mass spectrum is? A. The lowest mass peak B. The peak corresponding to the parent ion C. The highest mass peak D. The peak set to 100% relative intensity
Last Answer : The peak set to 100% relative intensity
Description : 1H nuclei located near electronegative atoms tend to be ______ relative to 1H nuclei A. Shielded B. Deshielded C. Resonanced D. Split
Last Answer : Deshielded
Description : Which of the following techniques would be most useful to identify and quantify the presence of a known impurity in a drug substance? A. NMR B. MS C. IR D. HPLC
Last Answer : IR
Description : What is shielding in NMR? A. Using a curved piece of metal to block an opponent’s attack B. Putting metal around an Rf source C. When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei D. Blocking parts of a molecule from Rf radiation
Last Answer : When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei
Description : Chemical shifts (δ) are typically reported in units of A. Gauss (G) B. Millitesla per meter (mT/m) C. Parts per million (ppm) D. Percent (%)
Last Answer : Parts per million (ppm)
Description : Which of the following names refers to the highest energy spin state of an ¹H nucleus in a magnetic field? A. Spin-up B. Spin-down C. Parallel D. |+½>
Last Answer : Spin-down
Description : he dipole magnetic moment (μ) is directly proportional to nuclear spin (I), connected by a constant called the A. Gyromagnetic ratio (γ) B. Planck's constant (h) C. Nuclear susceptibility (χ) D. Chemical shift (δ)
Last Answer : Gyromagnetic ratio (γ)
Description : In mass spectrometry, fragmentation of ions is achieved through? A. Ionization B. Splitting C. Solubilization D. Coupling
Last Answer : Ionization
Description : HPLC is an abbreviation for? A. High Profit Liquid Chromatography B. High Pressure Liquid Chromatography C. Higher Performance Low Chromatography D. Higher Profit Low Chromatography
Last Answer : High Pressure Liquid Chromatography
Description : The basis of the technique of chromatography for separating components of a mixture is? A. the differing movement of particles of different mass in an electrical field B. the interaction of the ... infrared radiation by the components. D. the deflection of charged particles in a magnetic field.
Last Answer : the interaction of the components with a stationary and a mobile phases
Description : Column efficiency is measured in terms of number of theoretical plates, which is: A. Inversely related to height equivalent to theoretical plates B. Directly related to the peak width C. Directly related to height equivalent to theoretical plates D. Inversely related to the peak width
Last Answer : Inversely related to height equivalent to theoretical plates
Description : Which one of the following is necessary for mass spectrometry to occur? A. Loss of an electron B. Change of alignment of a proton in a magnetic field C. A molecular vibration D. Excitation of an electron from the ground state to a higher energy state
Last Answer : Loss of an electron
Description : Signal splitting in NMR arises from? A. Shielding effect B. Spin-spin decoupling C. Spin-spin coupling D. Deshielding effecr
Last Answer : Spin-spin coupling
Description : Which of the following is used as a carrier gas in gas chromatography A. Carbon dioxide B. Oxygen C. Helium D. Methane
Last Answer : Helium
Description : Which of the following is an example of bulk property or general detector in HPLC A. Fluorescence detector B. Refractive index detector C. Electrochemical detector D. UV-Visible detector
Last Answer : Refractive index detector
Description : What is a chromophore? A. A coloured compound B. A group of atoms in compound responsible for electromagnetic radiation C. A group of atoms in a compound responsible for the absorption of electromagnetic radiation D. A group of atoms in coloured compound
Last Answer : A group of atoms in a compound responsible for the absorption of electromagnetic radiation
Description : Infrared spectroscopy provides valuable information about A. Molecular weight B. Melting point C. Conjugation D. Functional groups
Last Answer : Functional groups
Description : Mobile phase can be A. gas or liquid B. solid or liquid C. only solid D. gas only
Last Answer : gas or liquid
Description : Chromatography can be used to A. form mixtures B. change mixture compositions C. separate mixtures into pure substances D. all of these
Last Answer : separate mixtures into pure substances
Description : The third stage of Resource Planning involves ? (a) Identification and inventory of resources. (b) Matching the resource development plan with overall National Development plan. (c) ... with appropriate technology. (d) Qualitative and quantitative estimation and measurement of the resources.
Last Answer : (b) Matching the resource development plan with overall National Development plan.
Description : Monte Carlo analysis can help predict the impact of risks on project deliverables. This is an element of one of the tools and techniques of which of the following processes? A. Risk Response Planning B. Quantitative Risk Analysis C. Risk Identification D. Qualitative Risk Analysis
Last Answer : B. Quantitative Risk Analysis
Description : The process of assessing the probability and consequences of identified risks to the project objectives, assigning a risk score to each risk, and creating a list of prioritized risks describes ... Risk Analysis B. Risk Identification C. Qualitative Risk Analysis D. Risk Management Planning
Last Answer : C. Qualitative Risk Analysis
Description : Which of the following processes assesses the likelihood of risk occurrences and their consequences using a numerical rating? A. Qualitative Risk Analysis B. Risk Identification C. Quantitative Risk Analysis D. Risk Response Planning
Last Answer : C. Quantitative Risk Analysis
Description : Which of the following is the appropriate definition of a computer ? (A) Computer is a machine that can process information. (B) Computer is an electronic device that can store, ... ) Computer is a machine that can store, retrieve and process quickly and accurately only qualitative information
Last Answer : (B) Computer is an electronic device that can store, retrieve and process both qualitative and quantitative data quickly and accurately.
Description : Which of the following statements is NOT correct ? (A) Computer is capable of processing only digital signal (B) Computer is capable of analysing both quantitative and qualitative data (C) Appropriate ... for processing the data (D) Computer is capable of processing digital as well as analog signals
Last Answer : Answer: A
Description : The main outcome of risk identification, in a risk management process, is to: a. identify and determine the relative importance of the project risks. b. identify and describe all risks that ... responses to the project risks. d. identify and describe risks that have occurred on previous projects.
Last Answer : b. identify and describe all risks that might occur on the project.
Description : The main outcome of risk identification, in a risk management process, is to: a. identify and determine the relative importance of the project risks. b. identify and describe all risks that ... to the project risks. d. identify and describe risks that have occurred on previous projects.
Description : The following statement(s) is/are true concerning initial microbiologic diagnostic techniques. a. Appropriate expeditious transport of specimens to the microbiology laboratory is essential for obtaining accurate ... a 4-to 8-fold increase over the MIC to be considered clinically efficacious.
Last Answer : Answer: a, c, d Because most surgical infections are polymicrobial, specimens should be cultured for aerobic and anaerobic bacteria, as well as fungi. Although aerobic and aerotolerant ... fold increase over MIC during the peak serum level have been demonstrated to be clinically efficacious
Description : An approach to location anal on analysis that include includes both qualitative and quantitative considerations is a. locational cost-volume b. factor rating c. transportation model d. assignment assignment method e. make or buy analysis
Last Answer : b. factor rating
Description : The main factor controlling a decision to increase the occlusal height of teeth for extensive oral reconstruction is whether, A. the inter occlusal distance will be physiologically ... the aesthetic appearance of the patient will improve sufficiently to warrant the planned reconstruction
Last Answer : A. the inter occlusal distance will be physiologically acceptable after treatment
Description : The main factor controlling a decision to increase the occlusal height of teeth for extensive oral reconstruction is whether, A. The inter occlusal distance will be physiologically ... . The aesthetic appearance of the patient will improve sufficiently to warrant the planned reconstruction
Last Answer : A. The inter occlusal distance will be physiologically acceptable after treatment
Description : _________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals. (A) Separation efficiency (B) Selectivity index (C) Concentration ratio (D) None of these
Last Answer : (B) Selectivity index
Description : The-relative volatility for separation of a non-ideal binary mixture by distillation should be (A) 0 (B) 1 (C) > 1 (D) < 1
Last Answer : (C) > 1
Description : In a binary system, separation is very efficient, when the relative volatility is (A) 1 (B) > 1 (C) < 1 (D) 0.5
Last Answer : (B) > 1
Description : Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their (A) Viscosity (B) Density (C) Solubility (D) Relative volatility
Last Answer : (C) Solubility
Description : Separation of two volatile liquids by distillation makes use of their (A) Selectivity (B) Relative volatility (C) Solubility (D) Density difference
Last Answer : (B) Relative volatility
Description : In a perfectly elastic collision, the relative speed of approach and relative speed of separation are A. equal B. in equal C. zero D. infinite
Last Answer : equal
Description : In an elastic collision, the RELATIVE velocities of separation of the two bodies after impact compared with the relative velocity of approach before impact is: w) always greater x) always smaller y) always the same z) first greater, then smaller
Last Answer : ANSWER: Y -- ALWAYS THE SAME
Description : Boundary layer separation is characterised by one of the conditions given below, where 'Re' is the Reynolds number for the flow. Select the appropriate conditions. (A) Re > 1, accelerating flow (C) Re >1, decelerating flow
Last Answer : (D) Re >>1, decelerating flow
Description : Accommodation has both advantages and disadvantages as a conflict resolution strategy. Parties need to carefully consider when accommodation will be helpful, or potentially harmful. Which situation is NOT an appropriate time to practice accommodation?
Last Answer : When you feel as though you are being taken advantage of. apex.
Description : Which one of the following best describes users? a. Providers of both strategic and tactical direction to the project. b. Those intended to receive benefits or operate outputs. c. Facilitators of an appropriate issue resolution procedure. d. Those providing full-time commitment to the project.
Last Answer : b. Those intended to receive benefits or operate outputs.
Description : Which one of the following best describes users? a. Providers of both strategic and tactical direction to the project. b. Those intended to receive benefits or operate outputs. c. ... of an appropriate issue resolution procedure. d. Those providing full-time commitment to the project.
Description : The following may explain why a patient who had had a relative afferent pupillary defect has normal pupillary reaction to light: a. removal of a cataract b. resolution of optic neuritis c. anterior ischaemic optic neuropathy in both eyes d. development of bilateral papilloedema
Last Answer : anterior ischaemic optic neuropathy in both eyes
Description : Alice and two of her coworkers are in a disagreement about what type of care to give a particular patient. Which conflict resolution approaches will be most appropriate for helping Alice?
Last Answer : Walk-in-the-Woods Model, because it focuses on resolving conflicts between team members. apex.
Description : As a resolution of the conflict in the application of fundamental principles, the auditor, after considering the ethical issues and relevant facts may do any of the following, ... from, the relevant professional body without breaching confidentiality if significant conflict cannot be resolved.
Last Answer : Must immediately resign from the engagement or the employing entity
Description : What property of substance does distillation used as basis for separation of components of a mixture?
Last Answer : Different materials have different boiling points.
Description : Which of the following method would you consider appropriate while valuing the intangible assets? a) Multiple b) Relative c) Consistent d) Exclusive
Last Answer : b) Relative
Description : What is the required quality factor for an SSB filter with the following data: center frequency= 1 MHz, the desired attenuation level of the unwanted sideband= 80 dB and the separation between sidebands= 200 Hz? A. 1,250 B. 12,500 C. 125,000 D. 25,000
Last Answer : C. 125,000