PPSC Chemistry Part II Organic Chemistry Online Test With Answers

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PPSC Chemistry Part II Organic Chemistry Online Test

Sr. # Questions Answers Choice
1 IUPAC name of HCONH2 is. Methanamide Methanoylamine Ammoethanal Formanide
2 The IUPAC name of C2H3, CO , OC OC2H5 in Prepanoic anhydride Ethanoic anhydride Diketoethoxy ether None of the above
3 The compound (CH3)3COH according to IUPAC is known as. Tert Butanol 2,2 -Dumethyl -Propanol 2- Methyl -2-propanol Tert Alcohol
4 The IUPAC name of ethylene oxide is. Epoxy methane Oxcethene Methoxymethane All of the above
5 The IUPAC suffix used for ______ NC group is Cyanide Isocyanides Carbylamines Nitrite
6 When FeSO4 is added in the sodium extract the compound formed is. Only Na4[Fe (CN)6] Only Fe (OH)2 Only Na2So4 Mixture of all these
7 Presence of nitrogen in organic compound to tested as. Nitrogen gas NH3 NO Amide
8 Essential oils are purified by which of the following methods. Steam distillation Sublimation Crystallization Fractional crystallization
9 The most suitable method of separation in mixture of o-and p- nitrophenol is. Steam distillation Chromatography Ion-exchange Sublimation
10 Beillstein test is used for. Cl N2 CO2 Na
11 The simplest formula of a compound containing 50% of element X XY2 XY X2Y None of the abvoe
12 The molar mass of an organic acids is determined by Depression of freezing point Elevation of boiling point Volumetric method Victor Myer's method
13 Phosphorus is detected by fusing the organic compound with -------followed by extraction with H2O HNO3 H2SO4 Sodium per oxide Ozone
14 Carbon and Hydrogen are estimated by Liebig's method Kjeldhal's method Carries method None of the above
15 In Dumas method, the volume of the gas collected is equivalent to which of the following gases set free from the compound. Ammonia O2 N2 NO
16 The stationary and mobile phases in paper chromatography are. <sup>Liquid/Liquid</sup> Solid /Liquid Liquid/Solid Gas/solid
17 Two solids A and B have appreciable different solubility in water but their m.p. are very close. The mixture A and B can be separated by. Sublimation Distillation Fractional crystallization Specific rotation
18 The function of boiling the sodium extract with conc. HNO3 before testing the halogens is To make solution clear To make the solution acidic To bring common ion effect To destroy CN- and S2- ion
19 Identify the incorrect statement regarding crystallization from the following. It is an important procedure for purifying solids The impurities are removed by filtering the solution Crystals are separated by filtration In crystallization method, the solid is dissolved in a solvvent in which it is soluble at all temperature.
20 An impure sample of camphor contaminated with sand, can be purified by Distillation Sublimation Steam distillation None of the above
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