30 Questions
What is the primary purpose of triplicates in analytical chemistry?
To increase the precision of measurements
What is the main goal of treating the data in analytical chemistry?
To calculate the desired results
Which type of analysis determines properties at a macroscopic level?
Physical analysis
What is the purpose of a watch glass in laboratory analysis?
To hold solids while being weighed
Which apparatus is designed to measure small mass below the milligram range?
Analytical balance
What is the value of an analytical procedure based on?
Its reliability and accuracy
What is the primary purpose of a Bunsen burner in a laboratory setting?
To heat, sterilize, and combust materials
What is the primary purpose of a Petri Dish?
To hold growth medium for culturing cells
What is the main difference between a graduated cylinder and a beaker?
The accuracy of volume measurements
What is the primary function of a pipet?
To transport a high-accuracy measurement of liquid volumes
Which laboratory device uses a rotating magnetic field to stir a liquid?
Magnetic Stirrer
What is the purpose of a Desiccator?
To preserve moisture-sensitive items
What is the main purpose of a laboratory oven?
To use dry heat for sterilization
What is the primary function of a test tube?
To handle chemicals for qualitative experiments and assays
Which laboratory equipment is used for liquid-liquid extractions?
Separatory Funnel
What is the primary function of a volumetric flask?
To contain a precise volume of a liquid at a certain temperature
What is the purpose of a Hot Plate in wet chemical analysis?
To heat reactions to higher temperatures than room temperature
What is the primary function of a Centrifuge?
To separate various components of a fluid
What is the primary purpose of an Erlenmeyer flask in laboratory settings?
To collect, store, and approximate measurement of liquid samples
What is the main characteristic of a Florence flask that allows for uniform heating?
Round body and flat bottom
What is the purpose of a UV-VIS spectrometer in laboratory analysis?
To analyze the ultraviolet and visible spectral regions of a substance
What is the function of an interferometer in a FTIR instrument?
To create a pattern of light resulting from the combined constructive and destructive interference of all component wavelengths
What is the primary use of a burette in laboratory settings?
To evaporate liquids, hold solids, and heat small amounts of substances
What is the common feature among Erlenmeyer flasks and Florence flasks?
Flat bottom and cylindrical neck
What is the primary method of atomization used in atomic absorption spectroscopy?
Electrothermal vaporization
Which analytical technique is used to determine the structure of organic compounds with abundant neighboring hydrogen in their carbon backbones?
Nuclear Magnetic Resonance
What is the purpose of the high energy electron beam in Mass Spectrometer?
To cause total destruction and fragmentation of the molecules
In which areas of chemistry is Atomic Absorption Spectroscopy used?
Clinical analysis, pharmacology, biophysics, archaeology, and toxicology
What is the primary region of the spectrum used in Nuclear Magnetic Resonance?
Very low energy radio wave region
How many different elements can be determined using Atomic Absorption Spectroscopy?
Over 70
This quiz covers the final critical steps in most analysis methods, including obtaining required data, making advance decisions, treating data with calculations and plotting, and reporting calculated results. It involves statistics and data point readings. Test your knowledge of data analysis techniques!
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