PPSC Chemistry Part IV Analytical Chemistry Online Test With Answers

PPSC Chemistry Part IV Analytical Chemistry Online Test

Sr. # Questions Answers Choice
1 Which of the following is the best indicator for titration of CH3COH with NaOH Methyl orange Methyl red Phenophthalein Eosin
2 When CH3COOH is titrated against NaOH the pH as the equivalence point is. 7 &gt; 7 o<div>&gt;7</div> 6.8
3 When HCl is titrated against NaOH , the pH at the equivalence point is. zero &gt; 7 &lt; 7 14
4 An indicator for an acid base titration is a Weak acid Weak base Strong acid Strong base Both A and B
5 The point at which the reaction is observed to be complete is called. The equivalence point The end point The triplet point The equilibrium point
6 An acid base titration involves a neutralization reaction in which an acid is reacted with an equivalent amount of base The titrant is always a strong acid or base The analyte may be Strong acid Strong base Weak acid and Weak base All above
7 Which of the following is not a component of HPLC system. Pumps Columns Particle collector Injection system.
8 Which of the following functional groups is not involved in ion exchange chromatography. Weak acids Strong acids Strong bases Carbohydrates
9 Which of the following statement is not related with the advantages of TLC. A variety of adsorbents can be used The thickness of adsorbent can be varied Fluorescence can be introduced Different detectors can be used
10 Which of the following materials is not suitable as adsorbent for chromatography. Silica gel Activated charocal Alumina Calciu7m chloride
11 Which of the following techniques is capable of seperating minute quantities of the substances in a relatively short times with high resolutions. Gel electrophoresis Capillary electrophoresis GC HPLC
12 Which of the following technique is used to separate substance based on their charge to mass ratio. HPLC HPTLC GC Electrophoresis
13 Which of the following detector is used in HPLC system. Differential refractometer detector UV detector Diode array detector All above
14 Which of the following detector is used for compounds containing electronegative atoms. Mass specdtrometer ECD TCD UV-detector
15 Which of the following detector is used in GC analysis Thermal conductivity detector Flame ionization detector Mass spectrometer All above
16 A well packed column may hve 100 plates /m 1000 plates /m 10 plates /m 10,000 plates/m
17 Which of the following information is correct about a typical packed column in GC. 10-100 m long and 2 to 6 cm to diameter 1-10 m long and 0.2 to 0.6 cm in diameter 0.1-1 m long and 0.02 to 0.00 cm in diameter None of the above
18 Which of the following gas is not used as carrier gas in GC. Argon Nitrogen Helium CO2
19 Which of the following is not a component of a gas chromatography system. Carrier gas Capillary column Packed column Cathode lamp
20 The exchange equilibrium in gas chromatography depends on. Solubility or absorbability of he sample The polarity of he stationary phase and analyte The degree of H bonding All above factors
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