What is the primary purpose of chromatography in chemical analysis?
A) To measure pH
B) To separate components of a mixture
C) To determine melting point
D) To analyze thermal stability
Which technique is used to determine the molecular weight of a compound?
A) Titration
B) Mass spectrometry
C) Spectrophotometry
D) Polarimetry
What is the function of a spectrophotometer?
A) Measuring absorbance of light by a sample
B) Separating components of a mixture
C) Determining sample pH
D) Measuring viscosity
Which of the following techniques is based on the interaction of electromagnetic radiation with matter?
A) Chromatography
B) Mass spectrometry
C) Spectroscopy
D) Electrolysis
In gas chromatography, what is the mobile phase?
A) Liquid
B) Solid
C) Gas
D) Gel
Which type of spectroscopy is used to determine functional groups in a molecule?
A) UV-Vis Spectroscopy
B) Infrared (IR) Spectroscopy
C) Mass Spectrometry
D) X-ray Diffraction
Which instrument is used to measure the pH of a solution?
A) Spectrophotometer
B) pH meter
C) Chromatograph
D) Titration apparatus
Which analytical technique is used to determine the elemental composition of a sample?
A) UV-Vis Spectroscopy
B) Atomic Absorption Spectroscopy (AAS)
C) Chromatography
D) Polarimetry
What does HPLC stand for?
A) High Pressure Liquid Chromatography
B) High Precision Level Calibration
C) High Performance Liquid Chromatography
D) High Power Laser Chromatography
Which gas is commonly used as a carrier gas in gas chromatography?
A) Oxygen
B) Hydrogen
C) Helium
D) Nitrogen
Which technique is used for quantitative elemental analysis?
A) Flame photometry
B) Gel electrophoresis
C) UV-Vis Spectroscopy
D) X-ray Crystallography
Which instrument is used to measure optical activity of compounds?
A) Mass spectrometer
B) Polarimeter
C) IR Spectrometer
D) Atomic Absorption Spectrometer
Which detector is commonly used in gas chromatography?
A) UV detector
B) Thermal conductivity detector (TCD)
C) Refractive index detector
D) Photodiode array detector
Which technique is used for separating charged biomolecules?
A) Gas Chromatography
B) Electrophoresis
C) Mass Spectrometry
D) Infrared Spectroscopy
Which of the following is NOT a type of chromatography?
A) Gas Chromatography
B) Liquid Chromatography
C) Electron Microscopy
D) Thin Layer Chromatography
Which spectroscopy technique is used to determine atomic structure?
A) UV-Vis Spectroscopy
B) X-ray Diffraction (XRD)
C) Infrared Spectroscopy
D) Raman Spectroscopy
What does NMR spectroscopy primarily analyze?
A) Atomic structure
B) Molecular vibrations
C) Nuclear magnetic properties
D) Electron transitions
Which type of chromatography uses a solid stationary phase and a liquid mobile phase?
A) Gas Chromatography
B) Liquid Chromatography
C) Thin Layer Chromatography
D) Ion Exchange Chromatography
What is the main purpose of titration in chemical analysis?
A) Measuring molecular weight
B) Determining concentration of a solution
C) Measuring optical activity
D) Separating components of a mixture
Which technique is most suitable for analyzing volatile compounds?
A) High Performance Liquid Chromatography
B) Mass Spectrometry
C) Gas Chromatography
D) IR Spectroscopy
What is the primary function of a calorimeter?
A) Measuring temperature
B) Measuring heat changes in reactions
C) Analyzing molecular structures
D) Determining atomic composition
Which of the following is NOT an analytical instrument?
A) Spectrophotometer
B) Chromatograph
C) Calorimeter
D) Autoclave
Which type of chromatography separates ions based on their charge?
A) Gas Chromatography
B) Ion Exchange Chromatography
C) Thin Layer Chromatography
D) Paper Chromatography
Which technique is used for determining the refractive index of a substance?
A) Polarimetry
B) Mass Spectrometry
C) Refractometry
D) Chromatography
Which detector is commonly used in UV-Vis spectrophotometry?
A) Photomultiplier tube
B) Thermal conductivity detector
C) Refractive index detector
D) Mass spectrometer
Which technique is used to analyze the vibrational modes of molecules?
A) NMR Spectroscopy
B) Mass Spectrometry
C) Raman Spectroscopy
D) X-ray Diffraction
Which chromatography technique uses a paper as the stationary phase?
A) Gas Chromatography
B) Paper Chromatography
C) HPLC
D) Affinity Chromatography
What does the Beer-Lambert law relate to in spectrophotometry?
A) Absorbance and concentration
B) Mass and charge
C) Wavelength and frequency
D) Viscosity and pressure
Which instrument is used to analyze crystal structures?
A) Mass Spectrometer
B) IR Spectrometer
C) X-ray Diffractometer
D) Gas Chromatograph
