PPSC Chemistry Part IV Analytical Chemistry Online Test With Answers

PPSC Chemistry Part IV Analytical Chemistry Online Test

Sr. # Questions Answers Choice
1 Thermogravimetic analysis has application is which of the following fields Gravimetric analysis Discovery of new methods ofseparation Determination of purity and thermal stability All above
2 The property measured in DTA is Heat effects Weight loss Rate of change in weight Change in temperature
3 Which of the following is a thermometric method. TGA DTA DTG All
4 DTA is of great importance in which of the following field Ceramic Metallurgy Mineralogy All
5 The property associated in thermometric tittration is Change in weight Rate of change in weight Heat evolved or absorbed Change in temperature
6 Thermocouples have been constructed from Chromel ve elumel Copper vs platinum Both None
7 The common temperature detecting device in DTA are. Thermocouples Thermopiles Thermistore All
8 The property measured in TGA is Change in weight Rate of change in weight Heat envolved and absorbed Change of temperature.
9 In DTA , theriac effect may be exothermic of endothermic These are cause by Fusion Crystal structure inversion Destruction of crystal lattice All of above
10 The sample characteristics affecting the weight loss curve include. Amount of sample Sample particle site Heat of decomposition reactions All
11 In TGA, the width loss curve depends on the which instrumental factors. Furance heating rate Recording or chart speed Furnace atmosphere All
12 The technique which involves measurement of the changes in conductance of the solution by employing high frequency alternating current in known as. Potentiomerty Polarography Oscillometry Conductomerty
13 The technique which involves the equivalence relation between the quality of electric current passed and quantity of chemical change taking place in the electrochemical cell is called. Voltametry Coulometry Polarography Potentiometry
14 Volta metric technique using a dropping mercury electrode is called. Amperometry Coulometry Polarography Potentiometry
15 Which of the following technique is the application of voltammetry at a fixed potential to detect changes int he currents as a function of the concentrating of the analyte Amperometry Coulometry Polarography Potentiomertry
16 Which of the following technique in current voltage technique Amperometry Voltammetry Poteatiomertry Polarography
17 Which of the following is not a redox indicator. Ferroin Diphaylamine Phenolphthalein Methyl blue
18 Which of the following salt is not used in salt bridge to minimize liquids junction potential. KCl NH4Cl KNO3 CaCl2
19 Which of the following electrode is normally used as reference electrode for a potentiometer. Platinum electrode Calomel electrrode Silver electrode Copper electrode
20 Which of the following statement is not true with respect to electrode potential. Feasibility of a chemicals reaction Rate of chemical reaction Nature of a chemical reaction Free energy of a chemical reaction
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