Q1.
(a) SECTION-A 1. A weighing balance showed the weight of a substance 9.5 g, which is 0.5 g lower than its actual weight. Calculate % relative error.
(b) What do you mean by partition ratio (k') and relative retention (α) in chromatography?
(c) A 4 \cdot 00 × 10 -4 M solution of aminobenzene in water has absorbance, A = 0 \cdot 504 at 280 nm in a 1.00 cm cell. What will be the transmittance of a 1.50 × 10-3 M solution of aminobenzene in water measured at the same wavelength but in a 0.5 cm cell?
(d) A thermogram of a magnesium compound showed a loss of 66.0 mg from a total of 126.5 mg used for the analysis. Identify the compound either as MgO or MgCO 3 or MgC 2 O 4 . [Mg = 24.3, C = 12, O = 16]
(e) What are the properties vital for detectors to be used in X-ray fluorescence instrument? (f) How does plasma generate in inductively coupled plasma (ICP) technique? What do you understand by the calorific value of a fuel? 5 q) (h) Differentiate between AAS and ICP techniques based on the properties like accuracy, interferences and detection limit.
Q1.
(a) SECTION-A 1. A weighing balance showed the weight of a substance 9.5 g, which is 0.5 g lower than its actual weight. Calculate % relative error.
(b) What do you mean by partition ratio (k') and relative retention (α) in chromatography?
(c) A 4 \cdot 00 × 10 -4 M solution of aminobenzene in water has absorbance, A = 0 \cdot 504 at 280 nm in a 1.00 cm cell. What will be the transmittance of a 1.50 × 10-3 M solution of aminobenzene in water measured at the same wavelength but in a 0.5 cm cell?
(d) A thermogram of a magnesium compound showed a loss of 66.0 mg from a total of 126.5 mg used for the analysis. Identify the compound either as MgO or MgCO 3 or MgC 2 O 4 . [Mg = 24.3, C = 12, O = 16]
(e) What are the properties vital for detectors to be used in X-ray fluorescence instrument? (f) How does plasma generate in inductively coupled plasma (ICP) technique? What do you understand by the calorific value of a fuel? 5 q) (h) Differentiate between AAS and ICP techniques based on the properties like accuracy, interferences and detection limit.
Q2.
(a) What is Bonner affinity series in ion-exchange chromatography? Which factors govern this series?
(b) What is the role of monochromator in IR spectroscopy? Explain the types and components of monochromator.
Q2.
(a) What is Bonner affinity series in ion-exchange chromatography? Which factors govern this series?
(b) What is the role of monochromator in IR spectroscopy? Explain the types and components of monochromator.
Q3. 1.
(c) A 4.00 × 10^-4 M solution of aminobenzene in water has absorbance, A = 0.504 at 280 nm in a 1.00 cm cell. What will be the transmittance of a 1.50 × 10^-3 M solution of aminobenzene in water measured at the same wavelength but in a 0.5 cm cell?
Q4. 1. (d) A thermogram of a magnesium compound showed a loss of 66.0 mg from a total of 126.5 mg used for the analysis. Identify the compound either as MgO or MgCO3 or MgC2O4. [Mg = 24.3, C = 12, O = 16]
Q5. 1. (e) What are the properties vital for detectors to be used in X-ray fluorescence instrument?
Q6. 1. (f) How does plasma generate in inductively coupled plasma (ICP) technique?
Q7. 1. (g) What do you understand by the calorific value of a fuel?
Q8. 1. (h) Differentiate between AAS and ICP techniques based on the properties like accuracy, interferences and detection limit.
Q9. 2. (a) What is Bonner affinity series in ion-exchange chromatography? Which factors govern this series?
Q10. 2. (b) What is the role of monochromator in IR spectroscopy? Explain the types and components of monochromator.
