Q.28 The modern explanation of Markownikoff’s rule is in greater stability of the -
Q.29 2-methyl propene is isomeric with butene-1. They can be distinguished by -
Q.31 An alkene on oxidation with acidic KMnO4 gives only acetic acid, what is alkene -
Q.32 Which of the following alkenes gives acetaldehyde only on ozonolysis -
Q.33 Ethylene reacts with osmium tetroxide to form an osmic ester which on hydrolysis gives
Q.35 Diborane reacts with terminal alkenes to form trialkylboranes. These react with alkaline hydrogen peroxide to form -
Q.36 In which of the following Kharasch effect operate -
Q.37 1-Butene on heating with aluminium chloride at high temperature ( 200o-300o) isomerises to give -
Q.38 A hydrocarbon X adds on one mole of hydrogen to give another hydrocarbon and also decolourises bromine water. X reacts with KMnO4 in presence of acid to give two moles of the same carboxylic acid. The structure of X is -
Q.40 Addition of one equivalent of bromine to 1,3-butadiene produces :
Q.45 2-Phenylpropene on acidic hydration gives -
Q.46 cis-2-Butene on reaction with Br2 in CCl4 produces mainly -
Q.48 The reaction of ethylene with Br2 in water in the presence of NaCl gives -
Q.50 A hydrocarbon C8H14 consumes only one mole of H2 on catalytic hydrogenation. The hydrocarbon when heated with hot and concentrated alkaline KMnO4 give cyclohexanone and acetic acid (after acidification). The hydrocarbon is -
Q.1 Neopentyl bromide is heated with an alcoholic KOH solution. The major alkene product obtained is -
Q.4 1, 2-Dibromoethane is heated with zinc in ethanol. The product formed is -
Q.5 Propyne is allowed to react with diborane and the product is treated with acetic acid. The final product formed is -
Q.9 Which of the following is known as Lindlar catalyst ?
Q.11 Ethylene on reaction with Br2 in methanol forms -
Q.12 Propene on reaction with N-Bromosuccinimide in CCl4 produces -
Q.13 Which of the following alkyl halides will not undergo dehydrohalogenation -
Q.14 The addition of HBr to alkene in the presence of a peroxide is -
Q.15 Electrochemical oxidation of the succinate ion (1, 4-butanedioate ion) into ethylene proceeds through the formation of the intermediate -
Q.16 Propene on reaction with ICI produces mainly-
Q.17 Trans-2-butene reacts with cold dilute KMnO4 solution to produce -
Q.20 A hydrocarbon (A) on chlorination gives (B)which on reacting with alcoholic KOH changes into another hydrocarbon (C). The latter decolorizes Baeyer's reagent and on ozonolysis forms formaldehyde only (A) is -
Q.21 A hydrocarbon C6H10 absorbs only one molecule of H2 on catalytic hydrogenation. On ozonolysis, the hydrocarbon yields CHO(CH2) 4CHO. The hydrocarbon is -
Q.22 Which of the following hydrocarbons gets reduced when treated with sodium in liquid ammonia ? -
Q.23 An alkene on ozonolysis gives isobutyric acid only. The alkene is -
Q.25 For which of the following molecules is the net dipole moment not zero ?
Q.28 Ethylene reacts with CH2I2 in presence of Zn-Cu couple to form -