PPSC Chemistry Part II Organic Chemistry Online Test With Answers

PPSC Chemistry Part II Organic Chemistry Online Test

Sr. # Questions Answers Choice
1 Which configuration has lowest potential energy. Eclipsed Staggered Skew All have same energy
2 Which of the following property has a higher value for trans isomer as compared to cis isomer. Density Dipole moment Melting point Boiling point
3 Stereotsomers not related to each other as object and minor image are called. Enantiomers Diastereolsomers Conformations Antipodes
4 Different arrangement of groups in space which can be converted into one another by rotation around a single bond are caled. Conformations Metameres Enatiomers All of the above
5 Which of the following is capable of shown g optical isomersm. CH3COCOOH CH3CHOHCOOH Botha a and b All of these
6 Which of the following molecules can oxhibit geometrical isomerism. CH3CH = CH2 CH3CH = CHCH3 (CH3)2 C = CH2 CH3CH = C(CH3)2
7 Various compound corresponding to molecular formula C1H10 are. Functional isomers Position isomers Chain isomers None of the abvoe
8 Alkyl cyanide and alkyl isocyanides are Tautomers Metamers Functional isomers None of the above
9 Compounds HCN and HNC are. Tautomers Metamers Functional isomers Conformers
10 In the Friedel-Craft acylation, the amount of AlCl3 tha tmust be taken is In catalytic amount One equivalent More then one equivalent Amount does not matter
11 Toluene is o/p -orienting with respect to an electrophilic substitution reaction due to. +1 effect of the methyl group. +1 as wellas +H effect of the methyl group Hyper conjugatin between the methyl group and phenyl ring. + R effect of the methyl group
12 1-Butyne on oxymereuration -demercuration would give. Butanone Butanal Propanol and methanol Propanoic acid and formic acid
13 The electrophile in the sulphonation of benzene is. SO3 SO3H HSO4 SO2
14 Nitrobenzen can be prepared from benzene by using a mixture of conc. HNO3 and conc. H2SO4 In the nitrating mixture. HNO3 acts as a. Base Acid Oxidizing agent Catalyst
15 Among the following statements in the nitration of aromatic compounds, the false one is. The rate of nitration of benzene is almost the same as that of hexadeutero benzene The rate of nitration of toluene is greater than that of benzene The rate of nitrationof benzen is greater than that of hexadeutero benzene. Nitration in an electrophite substitution reaction.
16 Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives. o - creaol p - creaol 2,4 -dihydroxy toluene Benzoic acid
17 The reaction of toluene with chlorine in the presence of light gives. Benzoyl chloride Benzyl chloride m-chlorotoluene Mixture of 0 and p -chlorotoluene
18 Each of the following compound is an aromatic except. Benzene Naphthalene Cyclopentadienyl cation Cyclopentadienyl anion
19 Who proved that all the six hydrogen atoms in benzen are equivalent. Kekule Ladenburg Faraday Wohler
20 When propyne is treated with equeous H2SO4 in the presence of HgSO4 the functional isomer of the major product obtained in. Propanal Acetone Propane 2 -nl Propanol
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