Q.1 Two isomers differ in structure only in the position of one double bond, but differ considerably in -
Q.2 The number of s–sp3 , s–sp2 and sp2–sp2 bonds in propylene are given by the set-
Q.3 The General formula of alkenes & cycloalkane will be -
Q.4 Which of the following statement is true -
Q.7 Alkene can be formed from carbonium ion by
Q.9 A carbocation undergoes following reactions except -
Q.10 Propylene is more stable than ethylene. The reason for this is the -
Q.12 Propyl bromide on reaction with alcoholic KOH gives -
Q.13 In dehydrohalogenations the base ( alcoholic KOH ) abstracts -
Q.16 In the elimination of reactions, that is, in the formation of alkenes, the reactivity of halogens in alkyl halides is in the order -
Q.17 Ethyl chloride on heating with alcoholic potash gives -
Q.20 The structural formula of the compound which
yields ethylene upon reaction with zinc -
Q.21 Which alcohols can be turned most easily to alkenes -
Q.22 Alcohols undergo dehydration in the following sequence -
Q.24 n-Butyl alcohol on dehydration forms b-butylene as the chief product. This happens because of the rearrangement-
Q.26 On heating n–propyldimethylamine oxide, propene is obtained. The reaction is known as -
Q.27 Alkanes and Alkenes both can be obtained by -
Q.28 The most common reactions of alkenes are-
Q.29 The reaction
CH2 = CHCH3 + HBr CH3CHBrCH3 is -
Q.30 The markownikoff's rule is used in connection with -
Q.32 The catalyst used in kharash reaction, is -
Q.33 Reactivity of alkenes towards HX increases in the order -
Q.34 Ethylene forms ethylene chlorohydrin by the action of -
Q.35 3–Methyl–2–pentene on reaction with HOCl gives -
The alkene would be -
Q.41 Propene, CH3– CH = CH2 can be converted into 1–propanol by oxidation. Which set of reagents among the following is ideal to effect the conversion -
Q.42 Isobutylene on hydroboration followed by reaction with H2O2 /OH– –
Q.43 Prilieschaive’s reaction is titled as -
Q.44 Two jars A and B are filled with hydrocarbons. Br2 in CCl4 is added to these jars. A does not decolourise the Br2 solution, but B
decolourises. What are A and B -
Q.45 Which of the following characteristics apply both to ethene and ethyne -
Q.46 Baeyer's reagent is -
Q.47 Ozonolysis of 2-methyl butene-2 yields -
Q.48 Which set of products is expected on reductive ozonolysis of the following diolefin ?
Q.49 Unbranched alkenes on ozonolysis give -
Q.50 Which alkene on heating with hot and conc. KMnO4 solution gives acetone and a gas, which turns lime water milky -
Q.4 Addition of halogen acid is least in -