PPSC Chemistry Part II Organic Chemistry Online Test With Answers

PPSC Chemistry Part II Organic Chemistry Online Test

Sr. # Questions Answers Choice
1 The addition HCl to 2-pentene give 3-Chloropentane 2- Chloropentyne 2- Chloropentane<br> 2-Chloro-2-methyl butane
2 The reduction of an alkyne to alkene using Lindlar's catalyst results into Syn addition of hydrogen atoms Anti addition of hydrogen atoms A mixture obtained by ayn and anti addition of hydrogen which are equilibrium with each other A mixture obtained by syn and anti addition of hydrogen which are not in equilibrium with each other.
3 Hydrocarbon X (C6H12) on oxidation with hot alkaline (KMnO4) gives a mixture of prop ionic acid and dimethyl ketone. The structure of compound X is CH3CH = CHCH2CH2CH3 (CH3)2 C = CH CH2 CH3 CH3CH2CH = CHCH2CH3 (CH3)2 C = C (CH3)2
4 Which of the following products is obtained when but 2-ene is treated with perchloric acid. CH3CHO only CH3COOH only CH3CHO and CH3COOH CH3CH2COOH + HCOOH
5 The addition of HCl in the presence of poroxule does not follow anti Markovnikov's rule because. HCl bond is too strong to be broken homolytically Cl atom is not reative enough to add on to a double bond Cl combines with H to give back HCl HCl is a reducing agent.
6 The addition of Br2 to cis 2-butene produces. (+) 2,3 - dibromobutane only (-) 2,3 -dibromobutane only (+) 2,3, dibromobutane meso-2,3, -dibromobutane
7 Which of the following is not obtained when Br2 is added to ethylene in the presence of aqueous NaCl solution. Br CH2CH2Br Br CH2CH2Cl ClCH2 CH2Cl ClCH2CH2Cl
8 The ease of hydrohalogenation of alkyl halide with alcoholic KOH is. 3<sup>o</sup> &gt; 2<sup>o</sup> &gt; 1<sup> o</sup> 3<sup>o</sup> &lt; 2<sub>o</sub> &lt;1<sup>o</sup> 3<sup>o</sup> &gt; 2<sup>o</sup> &lt; 1<sup>o</sup> 3<sup>o</sup> &lt; 2 <sup>o</sup> &gt; 1<sup>o</sup>
9 Which of the following is the major process when neopentyl bromide is dehydrogenate with alcoholic potash. 2- methyl -1- butene 2- methyl- 1- butene 2,3 -dimethyl butene 2- butene
10 1-Chlorobutane on reaction with alcohols potash gives. 1- butane 1-butanol 2- butane 2- butanol
11 The product obtained on heating n-heptane with Cr2O3 ____Al2O3 at 600 oC is. Cycloheptane Methyl cyclohexane Benzene Teluene
12 Bromination of n-butane produces. I-bromobutane as the major product 2- bromobutane as the major product Both I - bromo and 2- bromobutane with equal percentage Both i-bromo and 2-bromo products whose percentage depends upon temperature.
13 Each of the following compound react with Grignard's reagent to form alkane exxcept. Ethanal Ethanoic acid Ethanol Ethync
14 In the reaction RCO2Na + Na OH (CaO) ______ RH, we eliminate carboxylate group as. CO2 Na2CO3 -CO CaCO3
15 During the preparation of ethane by Kolbe's electrolytic method using inert electrodes the pH of the electrolyte. Increases progressively as the reaction proceeds Decreases progressively as the reaction proceeds Remains constant throughout the reaction May decrease if the concentration of the electrolyte is not very high
16 Which of the following hydrocarbon cannot be obtained on reacting chloomethane with sodium metal in the presence of dry ether. C4 H10 C2H6 C2H4 C3H8
17 A mixture of ethyl iodide and n-propyl iodide is subjected to Wurts reaction. The hydrocarbon that will nto be formed is n-butane n-propane n-pentane n-hexane
18 The IUPAC name of HCOOCH3 is. Methoxy methanol Ethanoic acid Methyl methanoate Methoxy methane
19 The IUPAC name of HOCCH2CH2CH2COOH is 4- formylbutanoic acid 5- formylpentanoic acid 4- carboxybutanal 5- carboxypentanal
20 The IUPAC name of C2(CN)3 is 2,3-dicvano butanedinitrile 2,3 -dicyano -2- butenedinitrile 1,1,2,2-tetrcyanoethane 1,1,2,2, tetracyanocthenc
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