Analytical Chemistry 4 Comments / By fawadtwopointo@gmail.com / August 19, 2025 Welcome to your Analytical Chemistry Which of the following is a primary standard in titration? NaOH K2Cr2O7 Na2CO3 HCl None Which technique is used for the separation of ions in solution? Polarimetry Chromatography Nephelometry Gravimetry None The unit of absorbance in spectrophotometry is: No unit mol/L ppm cm None Beer-Lambert’s law relates absorbance with: Pressure Surface area Concentration Temperature None Which of the following is a gravimetric method? Spectroscopy Potentiometry Precipitation Conductometry None In AAS (Atomic Absorption Spectroscopy), the source of light is: Sodium vapor lamp UV lamp Tungsten lamp Hollow cathode lamp None In chromatography, Rf value is defined as: None Solvent front only Distance travelled by solvent / solute Distance travelled by solute / distance travelled by solvent None Internal standard method is applied to improve: Resolution Sensitivity Precision Accuracy None Flame photometry is mainly used to detect: Alkali metals Actinides Lanthanides Transition metals None The function of a salt bridge in electrochemical cell is: To maintain electrical neutrality To measure voltage To act as electrode To provide electrons None Which indicator is used in strong acid–strong base titration? Starch Eriochrome Black T Methyl orange Phenolphthalein None Oxidation number of Mn in KMnO4 is: +4 +7 +8 +6 None Standard electrode potential of SHE is: -1.0 V 0.5 V +1.0 V 0.0 V None Which titration involves starch indicator? Complexometric Redox (Iodometry) Acid-base Precipitation None Which electrode is used as a reference electrode? Calomel electrode Platinum electrode Ag/AgCl electrode Glass electrode None Equivalent weight of H2SO4 is: 98 24.5 49 196 None If 0.1 M NaOH solution neutralizes 25 mL of HCl, the molarity of HCl is: 0.1 M 0.2 M 0.5 M 0.05 M None Which type of error affects accuracy but not precision? Personal error Instrumental error Random error Systematic error None Which glassware is most accurate for measuring volume? Volumetric flask Measuring cylinder Beaker Conical flask None A solution contains 10 g of solute in 1 L. If molar mass = 50 g/mol, molarity is: 2.0 M 0.1 M 0.5 M 0.2 M None The principle of UV-Visible spectroscopy is: Molecules scatter light Molecules absorb UV/Visible light causing electronic transitions Molecules absorb infrared radiation Nuclei absorb magnetic radiation None IR spectroscopy is used to determine: Density Atomic number Functional groups Molecular mass None Which spectroscopy is based on nuclear spin transitions? UV-Vis AAS NMR IR None Mass spectrometry gives information about: pH Color Molecular weight Functional group None Flame color of sodium in flame test is: Yellow Green Red Violet None In AAS, flame acts as: Filter Radiation source Atomizer Detector None Which detector is used in spectrophotometer? Photocell Calorimeter Potentiometer Mercury thermometer None Raman spectroscopy is based on: Absorption of light Inelastic scattering of light Emission of light Nuclear resonance None In chromatography, stationary phase can be: Gas Solid or liquid Only solid Only liquid None In gas chromatography, carrier gas is: Eluent Stationary phase Mobile phase Solute None In gravimetric analysis, substance is usually: Precipitated and weighed Measured in volume Detected by color Weighed directly None Which is used as a primary standard in acidimetry? NaOH Na2CO3 KOH HCl None Equivalent weight of KMnO4 in acidic medium is: 158/5 158/3 158/2 158 None Precipitation titrations are commonly used for: Chloride determination Phosphate determination Sulfate determination Nitrate determination None Which indicator is used in EDTA titration? Phenolphthalein Eriochrome Black T Starch Methyl orange None The titration between AgNO3 and NaCl is known as: Iodometry Mohr’s method Permanganometry Complexometry None The process of back titration is used when: Solute is volatile Standard solution is unstable Reaction is fast Reaction is slow None In iodometric titration, thiosulfate is used as: Indicator Reducing agent Solvent Oxidizing agent None A blank titration is performed to: Increase accuracy Reduce concentration Increase sensitivity Increase precision None Normality of 0.5 M H2SO4 is: 0.5 N 0.25 N 2.0 N 1.0 N None The glass electrode is commonly used for measuring: Temperature Potential difference Conductivity pH None Conductometric titration is based on measuring changes in: Resistance Conductance Current Voltage None In potentiometric titration, the indicator is replaced by: Electrode potential measurement Internal standard Light detector Salt bridge None The unit of molar conductivity is: ohm cm S cm² mol⁻¹ V cm S mol cm None The electrode used to measure dissolved oxygen is: Glass electrode Calomel electrode Clark electrode Ag/AgCl electrode None Buffer solutions resist change in: Conductivity Temperature pH Viscosity None Which ion-selective electrode is used for determination of fluoride ion? Glass electrode Calomel electrode Lanthanum fluoride electrode Silver electrode None The slope of Nernst equation at 25°C is: 1.0 V 0.0591 V 0.0197 V 2.303 V None A polarograph uses which type of electrode? Reference electrode Platinum electrode Glass electrode Dropping mercury electrode None Which method is best for determination of trace metals in water? Atomic absorption spectroscopy Flame photometry Gravimetry Conductometry None Which type of error cannot be eliminated? Method error Systematic error Instrumental error Random error None Accuracy of a method refers to: Sensitivity Closeness to true value Reproducibility Calibration None Precision refers to: Closeness to true value Reproducibility of results Sensitivity Selectivity None A sample that represents the whole population is called: Gross sample Composite sample Standard sample Random sample None Which test is used to detect outliers in data? ANOVA Grubbs’ test F-test Student’s t-test None Confidence interval depends upon: Median Mean only Standard deviation Range only None Which error occurs due to personal bias of analyst? Gross error Systematic error Instrumental error Random error None The measure of spread of data is: Median Mean Mode Standard deviation None Which statistical test compares variances? ANOVA t-test F-test Chi-square test None Replicate analysis is performed to improve: Precision Sensitivity Detection limit Accuracy None TLC stands for: Thin Liquid Column Thin Layer Chromatography Total Liquid Chromatography Thermal Layer Chromatography None In HPLC, the mobile phase is usually: Liquid Plasma Solid Gas None Partition coefficient is ratio of: Concentration in stationary phase to mobile phase Weight of solute to solvent Solute to sample Volume of solute to solvent None Retention time in chromatography is: Time taken by solute to pass through column Migration rate of solvent Time of solvent flow None None Which chromatography separates enantiomers? Ion-exchange Paper Gel filtration Chiral chromatography None Gel filtration chromatography separates molecules based on: Charge Size Polarity Solubility None In ion-exchange chromatography, stationary phase is: Liquid solvent Charged resin Non-polar solid Neutral support None Gas chromatography detectors include: FID IR lamp Mercury thermometer Salt bridge None The main limitation of TLC is: Only works with gases Expensive Requires high volume Low resolution None Capillary electrophoresis separates analytes by: Size-to-charge ratio Solubility Absorption Color None Beer-Lambert law fails at: Infinite dilution Low concentrations High concentrations Normal concentration None Which region of IR shows fingerprint region? 1500–400 cm⁻¹ 4000–2500 cm⁻¹ 2500–2000 cm⁻¹ 2000–1500 cm⁻¹ None Proton NMR chemical shift is measured in: nm ppm M cm⁻¹ None Which nucleus is NMR active? ¹²C ³²S ¹H ¹⁶O None In AAS, which flame is commonly used? Nitrogen-methane Air-acetylene Oxygen-propane Oxygen-hydrogen None In fluorescence spectroscopy, emitted radiation has: Equal wavelength Longer wavelength than excitation Lower wavelength than excitation Variable None Which type of spectroscopy is used to detect trace organic pollutants? UV-Vis Conductometry AAS Fluorescence None Which is used as a monochromator in spectrophotometers? Glass prism Electrode IR detector Hollow cathode lamp None Detector in NMR is based on: Electron diffraction Absorption of UV Absorption of IR Radiofrequency signal None ESI is an ionization technique used in: Potentiometry UV IR Mass spectrometry None Thermogravimetric analysis measures: Volume change Color change Mass change with temperature Pressure change None DSC stands for: Differential Scanning Calorimetry Direct Sample Chromatography Dynamic Standard Calibration Digital Surface Chemistry None BET method is used to determine: Surface area Density Molecular mass Conductivity None Which technique is used to determine crystallinity? IR spectroscopy X-ray diffraction Polarimetry Flame test None Which technique is suitable for water of crystallization determination? Flame photometry IR UV-Vis Gravimetric analysis None EDTA is mainly used for estimation of: Acids Non-metals Metals Bases None COD in water analysis is determined by: EDTA titration Flame photometry AAS Dichromate method None Hardness of water is measured by: Mohr’s method Gravimetry EDTA titration Redox titration None BOD stands for: Basic Oxygen Determination Biochemical Oxygen Determination Biochemical Oxygen Demand Biological Organic Demand None Kjeldahl method is used for determination of: Carbon Nitrogen Oxygen Sulfur None Turbidity of water is measured in: NTU mg/L dS/m ppm None Flame atomic emission is most sensitive for: Transition metals Alkali metals Halogens Actinides None Gravimetric filter used for trace analysis is: Filter funnel Nylon filter Whatman filter paper No. 42 Millipore None pH range of phenolphthalein indicator is: 11–13 3–5 1–3 8.3–10 None Limit of detection (LOD) means: Average concentration Calibration slope Highest concentration detected Lowest concentration detected None Which technique measures optical rotation? Nephelometry Polarimetry Turbidimetry Calorimetry None Nephelometry measures: Density Light absorbed Heat evolved Light scattered by particles None Which titration uses adsorption indicators? Acid-base Complexometric Redox Precipitation titration None Which is a non-destructive analytical technique? Dry ashing Gravimetry X-ray fluorescence Titrimetry None Flame emission intensity is proportional to: Wavelength Pressure Temperature of flame Concentration of analyte None 1 out of 1 Time's upTime is Up!
Nouman Shah August 22, 2025 at 5:36 am Amazing test content!! please guide me a book for analytical chemistry preparation????? Reply
abdulnasir1353@gmail.com
Technical and relevant questions
Amazing test content!! please guide me a book for analytical chemistry preparation?????
Give chemistry AM 1737 material