#1
What is the purpose of a Soxhlet extractor in organic chemistry?
Extraction
ExplanationSoxhlet extractor is used for organic compound extraction.
#2
What is the purpose of a Buchner funnel in organic chemistry?
Filtration
ExplanationBuchner funnel is used for filtration in organic chemistry.
#3
Which method is commonly used for the determination of the melting point of a solid in organic chemistry?
Melting Point Apparatus
ExplanationMelting Point Apparatus is used for determining the melting point of solids.
#4
What is the primary purpose of a desiccator in the laboratory?
Drying and storing moisture-sensitive samples
ExplanationDesiccator is used for drying and storing moisture-sensitive samples.
#5
In the context of organic synthesis, what does the term 'yield' refer to?
The amount of product obtained in a reaction
ExplanationYield refers to the amount of product obtained in organic synthesis.
#6
Which technique is used to separate components of a mixture based on their solubility in different solvents?
Chromatography
ExplanationChromatography separates components based on solubility in different solvents.
#7
What is the purpose of a Dean-Stark apparatus in organic chemistry?
Distillation
ExplanationDean-Stark apparatus is used for distillation in organic chemistry.
#8
Which spectroscopic technique is used to determine the structure of organic compounds by measuring the absorption of infrared radiation?
Infrared Spectroscopy
ExplanationInfrared Spectroscopy measures absorption of infrared radiation for structural determination.
#9
Which method is commonly used to separate and purify proteins based on their charge and size?
Gel Electrophoresis
ExplanationGel Electrophoresis separates proteins based on charge and size.
#10
What is the primary purpose of a reflux setup in organic chemistry?
Maintaining constant temperature during reactions
ExplanationReflux setup maintains constant temperature during organic reactions.
#11
In NMR spectroscopy, what does the chemical shift indicate?
Chemical environment of nuclei
ExplanationChemical shift in NMR indicates the environment of nuclei.
#12
Which reagent is commonly used for the reduction of ketones to alcohols?
LiAlH4 (Lithium Aluminum Hydride)
ExplanationLiAlH4 is commonly used to reduce ketones to alcohols.
#13
In organic synthesis, what does the term 'protecting group' refer to?
A group added to protect a reactive site
ExplanationProtecting group is added to protect reactive sites in organic synthesis.
#14
In column chromatography, what is the stationary phase typically composed of?
Silica gel
ExplanationThe stationary phase in column chromatography is typically composed of silica gel.
#15
What is the purpose of a rotary evaporator in organic chemistry?
Distillation
ExplanationRotary evaporator is used for distillation in organic chemistry.