The Analytical Chemistry deals with instruments and methods to _________, identify and quantify the matter.
Analytical Chemistry primarily focuses on the separation, identification, and quantification of matter.
The sample may be solid, liquid, gas or a _________ in qualitative analysis.
In qualitative analysis, the sample can be a mixture of solid, liquid, or gas.
Analysis deals with the identification of presence of functional groups in compounds is:
Organic qualitative analysis deals with identifying functional groups in organic compounds.
Flame test of Copper Halide with bluish-green color identify the presence of:
A bluish-green color in the flame test indicates the presence of Copper.
The physical methods used to measure physical properties is called:
Atomic Emission Spectroscopy is a physical method used to measure physical properties.
The error caused by improper functioning of instrument is:
Systematic errors are caused by improper functioning of instruments.
An agreement between a measured value and the accepted true value.
Accuracy refers to the agreement between a measured value and the accepted true value.
Spectroscopy is the interaction of light with:
Spectroscopy involves the interaction of light with matter.
The Gas is mobile phase in:
In Gas Chromatography, the gas acts as the mobile phase.
It used to assess concentration or amount of given atomic, molecular or ionic chemical.
Spectroscopy is used to assess the concentration or amount of a given chemical species.
What does Analytical Chemistry primarily focus on?
Analytical Chemistry focuses on the identification and estimation of chemical components.
What does Qualitative Analysis deal with?
Qualitative Analysis deals with the identification of elements, ions, or compounds.
Quantitative Analysis is concerned with:
Quantitative Analysis is concerned with estimating the amount of a substance.
Which of the following is a type of Quantitative Analysis?
Gravimetric analysis is a type of Quantitative Analysis.
What is defined as the numerical difference between observed and true value?
Error is defined as the numerical difference between observed and true value.
Accuracy refers to:
Accuracy refers to the closeness to the true value.
Precision is best defined as:
Precision is defined as the agreement between repeated measurements.
Which of the following is a classical qualitative method?
The Flame test is a classical qualitative method.
Which technique is considered an instrumental method in Analytical Chemistry?
Gas chromatography is considered an instrumental method in Analytical Chemistry.
What is the main goal of Analytical Chemistry?
The main goal of Analytical Chemistry is to separate, identify, and measure substances.
Which test indicates the presence of halides in organic qualitative analysis?
A white precipitate with AgNO₃ in HNO₃ indicates the presence of halides.
What color does copper halide show in a flame test?
Copper halide shows a bluish-green color in a flame test.
Which of the following is a physical method in quantitative analysis?
Atomic Emission Spectroscopy is a physical method in quantitative analysis.
Which method involves chemical reactions like precipitation and neutralization?
Volumetric Analysis involves chemical reactions like precipitation and neutralization.
What is the correct order of analysis in chemistry?
The correct order of analysis in chemistry is first qualitative, then quantitative.
Which of the following is NOT one of the main causes of errors in experiments?
The temperature of the observer is not one of the main causes of errors in experiments.
What is a systematic error?
A systematic error is caused by defects in instruments or methods.
Which of the following is a source of systematic error?
An improperly cleaned burette in titration is a source of systematic error.
Which of the following best defines a random error?
A random error is unpredictable and caused by small, uncontrollable factors.
Why do we take multiple readings in an experiment?
Multiple readings in an experiment are taken to reduce the effect of random errors.
What does accuracy mean in analytical measurement?
Accuracy in analytical measurement means how close a measured value is to the true value.
Can a measurement be accurate but not precise?
A measurement can be accurate but not precise if it is close to the true value but not consistent.
What is meant by precision in measurements?
Precision in measurements refers to how consistently repeated measurements agree with each other.
Which of the following is NOT used in classical methods of analysis?
Electronic instruments are not used in classical methods of analysis.
Which type of analysis is used to determine the volume of a known concentration solution that reacts with an unknown one?
Titrimetric analysis is used to determine the volume of a known concentration solution that reacts with an unknown one.
In titration, the substance with known concentration is called:
In titration, the substance with known concentration is called the titrant.
What is the main purpose of an indicator in titration?
The main purpose of an indicator in titration is to show the endpoint by changing color.
Which of the following is a correct definition of titration?
Titration is defined as comparing the volume of a known concentration solution with an unknown one.
What type of analysis involves determining weight of a constituent by converting it into a measurable form?
Gravimetric analysis involves determining the weight of a constituent by converting it into a measurable form.
Which is considered the most accurate method for quantitative estimation?
The Gravimetric method is considered the most accurate for quantitative estimation.
What is the correct order of steps in gravimetric analysis?
The correct order of steps in gravimetric analysis is Preparation → Separation → Weighing → Computation.
Which of the following is NOT a type of gravimetric analysis?
Chromatographic analysis is not a type of gravimetric analysis.
What is the basic principle of spectroscopy?
The basic principle of spectroscopy is the interaction of light with matter.
What type of spectroscopy is also known as vibrational spectroscopy?
Infrared Spectroscopy is also known as vibrational spectroscopy.
What is the main use of infrared spectroscopy in industries?
The main use of infrared spectroscopy in industries is the specification of functional groups.
What is the mobile phase in chromatography?
The mobile phase in chromatography is a moving fluid stream containing the sample.
In HPLC, what ensures rapid solvent flow through the column?
A mechanical pump ensures rapid solvent flow through the column in HPLC.
What is retention time in chromatography?
Retention time in chromatography is the time taken for a compound to elute from the column.
What is the stationary phase in gas chromatography?
The stationary phase in gas chromatography is the column.
Which compounds are best analyzed using gas chromatography?
Volatile compounds like benzene and toluene are best analyzed using gas chromatography.
What is the function of a salt bridge in an electrochemical cell?
The function of a salt bridge in an electrochemical cell is to maintain ionic connection between half cells.
In potentiometry, what is measured?
In potentiometry, the potential difference between electrodes is measured.