e-exam CHM202 | Campusflava https://campusflava.com Tutors, Past Questions and Projects. Wed, 13 Nov 2019 07:23:06 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.3 https://i0.wp.com/campusflava.com/wp-content/uploads/2023/01/cropped-CF.png?fit=32%2C32&ssl=1 e-exam CHM202 | Campusflava https://campusflava.com 32 32 123014824 CHM202 e-exam (2019) https://campusflava.com/blog/chm202-e-exam-2019-2/ https://campusflava.com/blog/chm202-e-exam-2019-2/#respond Wed, 13 Nov 2019 07:23:06 +0000 https://campusflava.com/?p=31926 Question QFB1 : The equation, constant + log of concentration of denotes Answer: Ph Question QFB2 : ______ are complexing agents that bind with the metals to form complexes. Answer: Ligands Question QFB3 : ______ is the most widely used chelator in the field of analytical chemistry. Answer: EDTA Question QFB4 : Anions that form […]

The post CHM202 e-exam (2019) first appeared on Campusflava.]]> Question QFB1 : The equation, constant + log of concentration of
denotes
Answer: Ph
Question QFB2 : ______ are complexing agents that bind with the metals to form complexes.
Answer: Ligands
Question QFB3 : ______ is the most widely used chelator in the field of analytical chemistry.
Answer: EDTA
Question QFB4 : Anions that form precipitate with certain metal ion can be analysed with …………………………………………. by indirect titration
Answer: EDTA
Question QFB5 : ____ is used to prevent one element from interfering in the analysis of another element
Answer: Masking agent
Question QFB6 : In detecting end point, the second type of indicator is ______ indicator.
Answer: Adsorption
Question QFB7 : Fluorescien is used as an indicator for halides at pH ____
Answer: 7
Question QFB8 : ______ titrations are useful tools in determining concentration of metals that form complex with some anions (ligand) under varying pH systems.
Answer: Complexometric
Question QFB9 : The maximum amount of an acid or base that can be added to a buffer system without causing a change in pH of a system is ________.
Answer: Buffer capacity
Question QFB10 : ______ is that branch of chemistry which is based upon the measurement of decrease in the power of the radiation (attenuation) brought about by the analyte when electromagnetic radiation is made to pass through the analyte.
Answer: Spectroscopy
Question QFB11 : Absolute Uncertainty is a way by which _______ of a measurement can be expressed.
Answer: Accuracy
Question QFB12 : Intermediate error is otherwise called ____ error.
Answer: Random
Question QFB13 : The type of error that is committed when pH meter has been incorrectly standardised is _________.
Answer: Systematic
Question QFB14 : The process by which Precipitates carry down from the solution other constituent that are normally soluble, causing contamination of precipitate is ______.
Answer: Coprecipitation Â
Question QFB15 : The process in which coagulated particles are filtered, washed with water, and the particles revert to the colloidal state is called ____.
Answer: Peptization
Question QFB16 : An ore is analyzed for manganese content by converting the manganese toMn2O3 and weighing it. If a 1.52 g sample yeildsMn3O4 weighing 0.126g, what would be the percent Mn2O3 in the sample?
Answer: 8.58%
Question QFB17 : Gravimetric analysis is very_____, if it is carried out under the right experimental conditions.
Answer: Precise
Question QFB18 : The organic precipitating agent that forms slightly soluble non-ionic complexes is called _____.
Answer: Coordination compound
Question QFB19 : The process by which water undergoes self -ionization known as _______.
Answer: Autoprotolysis
Question QFB20 : In the equation E = constant + β+ (0.05915 Log AH+(outside)/ AH+ (inside), the constant is known as _______.
Answer: asymmetry potential
Question QFB21 : The concept that is very important in conveying the actual meaning and status of a digit is _________.
Answer: significant figure
Question QFB22 : When zero occurs in the middle of a number, they are _______.
Answer: Significant
Question QFB23 : 7.2384 has _______ number of significant figure.
Answer: Five
Question QFB24 : Rounding should not be done on intermediate results to avoid build-up of_____ errors.
Answer: round-off
Question QFB25 : The degree of agreement between replicate measurements of
the same quantity is _______.
Answer: Precision
Question QFB26 : The _____ is an analytical technique which involves measurement ofweight of components of known sample.
Answer: Gravimetric analysis
Question QFB27 : There are _____ numbers of types of spectrophotometerÂ
Answer: Three
Question QFB28 : To be useful, a radiation detector must respond over a broad _____ range
Answer: Wavelength
Question QFB29 : In a monochromator, The sample container is otherwise known as ____.
Answer: Cell
Question QFB30 : The _____ is a device which disperses radiation into its component wavelength.
Answer: Monochromator
Question QFB31 : For _____, a low pressure hydrogen or deuterium discharge tube isgenerally used as a source
Answer: ultraviolet region
Question QFB32 : There are ____ limitations of Beer’s Law .
Answer: Three
Question QFB33 : The absorption of radiation can be used for ___ analysis.
Answer: Qualitative
Question QFB34 : ________ region is a very small wavelength region that can be seen by human eyes.
Answer: Visible
Question QFB35 : _____ radiation is a type of energy that is transmitted through space at enormous velocities.
Answer: Electromagnetic
Question QMC1 : A _____ solution can be defined as a solution that resists changes in pH when small amount of acid or base is added or when dilution occursÂ
Answer:
Question QMC2 : An ore is analysed for manganese content by converting the manganese toMn2O3 and weighing it. If a 1.52 g sample yields Mn3O4 weighing 0.126g, what would be the percent Mn?
Answer:
Question QMC3 : All these are factors that influence solubility of precipitate EXCEPT ____.
Answer:
Question QMC4 : There are _____ types of organic precipitating agents in use,
Answer:
Question QMC5 : All these are elements that can be separated by hydrogen sulphide as a precipitating agent EXCEPT _____.
Answer:
Question QMC6 : The analyte converted by methanoic acid to its elemental form for weighing is ____.
Answer:
Question QMC7 : Oxine as a precipitating agent is good for ____ metal.
Answer:
Question QMC8 : The potential of hydrogen in a system is called _____.
Answer:
Question QMC9 : All these can be used to refer to Kw EXCEPT_____.
Answer:
Question QMC10 : The main factor that determines the real pH of a system is _______.Â
Answer:
Question QMC11 : In the equation; Relative supersaturation = (Q – S) / S , the letter Q denotes _____.
Answer:
Question QMC12 : Calculate the solubility of silver chloride in 0.10M NaNO3 if thermodynamic solubility product is 1.0 x 10-10; activity coefficient for silver is 0.75 and activity coefficient for chloride is 0.76.
Answer:
Question QMC13 : Variance is a way of expressing _______.
Answer:
Question QMC14 : The mean square deviation is
Answer:
Question QMC15 : A technique employed when population is heterogeneous with respect to the variables under study is ________ sampling.
Answer:
Question QMC16 : The method used in collecting a true representative sample depends on<_______ factors.
Answer:
Question QMC17 : Statistical tool with the help of which the relationship between two variablesis studied is _________.
Answer:
Question QMC18 : F test is defined in terms of
Answer:
Question QMC19 : Standard error of mean is otherwise known as _______
Answer:
Question QMC20 : The relative measure of dispersion is known as _________.
Answer:
Question QMC21 : The most commonly used absolute measure of dispersion is _______.
Answer:
Question QMC22 : The mean square deviation is ______. Â
Answer:
Question QMC23 : Variance is a way of expressing _______.Â
Answer:
Question QMC24 : The type of EDTA titration technique that involves a known excess of EDTA to be added to the analyte is ______.
Answer:
Question QMC25 : The process by which biological fluid are decomposed which involves boiling sample materials with oxidizing mineral acid or mixture of acids is ________.
Answer:
Question QMC26 : Generally, there are _____ basic requirements for titration.
Answer:
Question QMC27 : The difference between the equivalence point and end point is _______ error.
Answer:
Question QMC28 : The type of titration necessary when direct titration does Not give clear or sharp end point is _______ titration.
Answer:
Question QMC29 : The formula equivalent divided by litre represent ________.
Answer:
Question QMC30 : The simplest method for ascertaining correlation between two variables by plotting the values on a chart is ________.
Answer:
Question QMC31 : The solvents that are neither appreciably acidic nor basic is ________.
Answer:
Question QMC32 : In coefficient of correlation, the _____ would show the degree of the interrelationship going on.
Answer:
Question QMC33 : The type of indicator used when the titrant is highly coloured is ______.
Answer:
Question QMC34 : If a 4.97mg of an analyte is analysed as 4.91mg, the relative error in the analysis is _______.
Answer:
Question QMC35 : Determinate error can also be called ______ error.
Answer:

The post CHM202 e-exam (2019) first appeared on Campusflava.]]> https://campusflava.com/blog/chm202-e-exam-2019-2/feed/ 0 31926 CHM202 e-exam (2019) https://campusflava.com/blog/chm202-e-exam-2019/ https://campusflava.com/blog/chm202-e-exam-2019/#respond Mon, 11 Nov 2019 16:44:21 +0000 https://campusflava.com/?p=31910 Question QFB1 : The equation, constant + log of concentration of denotes Answer: Ph Question QFB2 : ______ are complexing agents that bind with the metals to form complexes. Answer: Ligands Question QFB3 : ______ is the most widely used chelator in the field of analytical chemistry. Answer: EDTA Question QFB4 : Anions that form […]

The post CHM202 e-exam (2019) first appeared on Campusflava.]]> Question QFB1 : The equation, constant + log of concentration of
denotes
Answer: Ph
Question QFB2 : ______ are complexing agents that bind with the metals to form complexes.
Answer: Ligands
Question QFB3 : ______ is the most widely used chelator in the field of analytical chemistry.
Answer: EDTA
Question QFB4 : Anions that form precipitate with certain metal ion can be analysed with …………………………………………. by indirect titration
Answer: EDTA
Question QFB5 : ____ is used to prevent one element from interfering in the analysis of another element
Answer: Masking agent
Question QFB6 : In detecting end point, the second type of indicator is ______ indicator.
Answer: Adsorption
Question QFB7 : Fluorescien is used as an indicator for halides at pH ____
Answer: 7
Question QFB8 : ______ titrations are useful tools in determining concentration of metals that form complex with some anions (ligand) under varying pH systems.
Answer: Complexometric
Question QFB9 : The maximum amount of an acid or base that can be added to a buffer system without causing a change in pH of a system is ________.
Answer: Buffer capacity
Question QFB10 : ______ is that branch of chemistry which is based upon the measurement of decrease in the power of the radiation (attenuation) brought about by the analyte when electromagnetic radiation is made to pass through the analyte.
Answer: Spectroscopy
Question QFB11 : Absolute Uncertainty is a way by which _______ of a measurement can be expressed.
Answer: Accuracy
Question QFB12 : Intermediate error is otherwise called ____ error.
Answer: Random
Question QFB13 : The type of error that is committed when pH meter has been incorrectly standardised is _________.
Answer: Systematic
Question QFB14 : The process by which Precipitates carry down from the solution other constituent that are normally soluble, causing contamination of precipitate is ______.
Answer: Coprecipitation Â
Question QFB15 : The process in which coagulated particles are filtered, washed with water, and the particles revert to the colloidal state is called ____.
Answer: Peptization
Question QFB16 : An ore is analyzed for manganese content by converting the manganese toMn2O3 and weighing it. If a 1.52 g sample yeildsMn3O4 weighing 0.126g, what would be the percent Mn2O3 in the sample?
Answer: 8.58%
Question QFB17 : Gravimetric analysis is very_____, if it is carried out under the right experimental conditions.
Answer: Precise
Question QFB18 : The organic precipitating agent that forms slightly soluble non-ionic complexes is called _____.
Answer: Coordination compound
Question QFB19 : The process by which water undergoes self -ionization known as _______.
Answer: Autoprotolysis
Question QFB20 : In the equation E = constant + β+ (0.05915 Log AH+(outside)/ AH+ (inside), the constant is known as _______.
Answer: asymmetry potential
Question QFB21 : The concept that is very important in conveying the actual meaning and status of a digit is _________.
Answer: significant figure
Question QFB22 : When zero occurs in the middle of a number, they are _______.
Answer: Significant
Question QFB23 : 7.2384 has _______ number of significant figure.
Answer: Five
Question QFB24 : Rounding should not be done on intermediate results to avoid build-up of_____ errors.
Answer: round-off
Question QFB25 : The degree of agreement between replicate measurements of
the same quantity is _______.
Answer: Precision
Question QFB26 : The _____ is an analytical technique which involves measurement ofweight of components of known sample.
Answer: Gravimetric analysis
Question QFB27 : There are _____ numbers of types of spectrophotometerÂ
Answer: Three
Question QFB28 : To be useful, a radiation detector must respond over a broad _____ range
Answer: Wavelength
Question QFB29 : In a monochromator, The sample container is otherwise known as ____.
Answer: Cell
Question QFB30 : The _____ is a device which disperses radiation into its component wavelength.
Answer: Monochromator
Question QFB31 : For _____, a low pressure hydrogen or deuterium discharge tube isgenerally used as a source
Answer: ultraviolet region
Question QFB32 : There are ____ limitations of Beer’s Law .
Answer: Three
Question QFB33 : The absorption of radiation can be used for ___ analysis.
Answer: Qualitative
Question QFB34 : ________ region is a very small wavelength region that can be seen by human eyes.
Answer: Visible
Question QFB35 : _____ radiation is a type of energy that is transmitted through space at enormous velocities.
Answer: Electromagnetic
Question QMC1 : A _____ solution can be defined as a solution that resists changes in pH when small amount of acid or base is added or when dilution occursÂ
Answer:
Question QMC2 : An ore is analysed for manganese content by converting the manganese toMn2O3 and weighing it. If a 1.52 g sample yields Mn3O4 weighing 0.126g, what would be the percent Mn?
Answer:
Question QMC3 : All these are factors that influence solubility of precipitate EXCEPT ____.
Answer:
Question QMC4 : There are _____ types of organic precipitating agents in use,
Answer:
Question QMC5 : All these are elements that can be separated by hydrogen sulphide as a precipitating agent EXCEPT _____.
Answer:
Question QMC6 : The analyte converted by methanoic acid to its elemental form for weighing is ____.
Answer:
Question QMC7 : Oxine as a precipitating agent is good for ____ metal.
Answer:
Question QMC8 : The potential of hydrogen in a system is called _____.
Answer:
Question QMC9 : All these can be used to refer to Kw EXCEPT_____.
Answer:
Question QMC10 : The main factor that determines the real pH of a system is _______.Â
Answer:
Question QMC11 : In the equation; Relative supersaturation = (Q – S) / S , the letter Q denotes _____.
Answer:
Question QMC12 : Calculate the solubility of silver chloride in 0.10M NaNO3 if thermodynamic solubility product is 1.0 x 10-10; activity coefficient for silver is 0.75 and activity coefficient for chloride is 0.76.
Answer:
Question QMC13 : Variance is a way of expressing _______.
Answer:
Question QMC14 : The mean square deviation is
Answer:
Question QMC15 : A technique employed when population is heterogeneous with respect to the variables under study is ________ sampling.
Answer:
Question QMC16 : The method used in collecting a true representative sample depends on<_______ factors.
Answer:
Question QMC17 : Statistical tool with the help of which the relationship between two variablesis studied is _________.
Answer:
Question QMC18 : F test is defined in terms of
Answer:
Question QMC19 : Standard error of mean is otherwise known as _______
Answer:
Question QMC20 : The relative measure of dispersion is known as _________.
Answer:
Question QMC21 : The most commonly used absolute measure of dispersion is _______.
Answer:
Question QMC22 : The mean square deviation is ______. Â
Answer:
Question QMC23 : Variance is a way of expressing _______.Â
Answer:
Question QMC24 : The type of EDTA titration technique that involves a known excess of EDTA to be added to the analyte is ______.
Answer:
Question QMC25 : The process by which biological fluid are decomposed which involves boiling sample materials with oxidizing mineral acid or mixture of acids is ________.
Answer:
Question QMC26 : Generally, there are _____ basic requirements for titration.
Answer:
Question QMC27 : The difference between the equivalence point and end point is _______ error.
Answer:
Question QMC28 : The type of titration necessary when direct titration does Not give clear or sharp end point is _______ titration.
Answer:
Question QMC29 : The formula equivalent divided by litre represent ________.
Answer:
Question QMC30 : The simplest method for ascertaining correlation between two variables by plotting the values on a chart is ________.
Answer:
Question QMC31 : The solvents that are neither appreciably acidic nor basic is ________.
Answer:
Question QMC32 : In coefficient of correlation, the _____ would show the degree of the interrelationship going on.
Answer:
Question QMC33 : The type of indicator used when the titrant is highly coloured is ______.
Answer:
Question QMC34 : If a 4.97mg of an analyte is analysed as 4.91mg, the relative error in the analysis is _______.
Answer:
Question QMC35 : Determinate error can also be called ______ error.
Answer:

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