Practice Test


1) Pick up the correct statement about alkyl halides


2) Which statement is correct ?


3) An alkyl iodide on standing darkens, due to


4) Methyl chloride reacts with silver acetate to yield


5) The reactivity order of alkyl halides depends upon


6) For a given alkyl group, the densities, boiling point, melting point are in the order


7) An alkyl halide may be converted into an alcohol by


8) Most readily hydrolysed halide is


9) Isobutyl chloride and butyl chloride are


10) Formation of alkane by the action of Zn on alkyl halide is called


11) Which group is displaced by a halogen group ?


12) Which reagent is useful in increasing the carbon chain of an alkyl halide ?


13) The products of reaction of alcholic silver nitrate with ethyl bromide are


14) 2-Bromopentane is heated with potassium ethoxide in etnanol. The major product is


15) A mixture of sodium acetate and soda lime is heated and the product treated with excess of chlorine in presence of bright sunlight. The product is


16) The reactivities of methyl chloride (A), propyl chloride (B) and chlorobenzene (C) are in the order


17) A mixture of 1-chloropropane and 2-chloropropane when treated with alcoholic KOH, it gives


18) Treatment of ammonia with excess of ethyl chloride will yield


19) Ethyl bromide and iso-propyl chloride can be distinguished by


20) Which of the following can be obtained by halide exchange method ?


21) Which of the following do not form Grignard reagent ?


22) 1, 2-Dibromoethane is added to prevent deposition of lead metal in


23) If methyl iodide and ethyl iodide are mixed in equal proportions and the mixture is treated with metallic sodium in presence of dry ether, the number of possible products formed is


24) Preparation of alkyl halides in laboratory is least preferred by


25) Ethyl bromide reacts with lead-sodium alloy to form


26) The product obtained on treatment of ethyl chloride with potassium cyanide is reduced by sodium and alcohol to give


27) Iodoethane reacts with sodium in ether, the product formed is


28) Which one of the following is most reactive towards nucleophilic substitution reaction ?


29) Mg reacts with RBr best in


30) An alkyl chloride produces a single alkene on reaction with sodium ethoxide and etanol. The alkene further undergoes hydrogenation to yield 2-methylbutane. Identify the alkyl chloride from amongst the following


31) Which of the following reagent cannot be used for preparing alkyl chloride from alcohol ?


32) The reactivity order of halides for dehydrohalogenation is


33) Which of the following will have the maximum dipole moment ?


34) The order of reactivity of alkyl halides towards elimination reaction is


35) Both methane and ethane can be prepared in single steps by the use of


36) Ethyl chloride on treatment with aqueous alkali gives


37) Ethyl alcohol gives ethyl chloride with help of


38) 1,3-Dibromopropane reacts with metallic zinc to form


39) Tetrabromoethane on treatment with alcoholic zinc gives


40) Among the following the most reactive towards alcoholic KOH is


41) Allyl chloride on dehydrochlorination gives


42) Phosgene is a common name of


43) The reaction between alkyl halides and sodium metal is called


44) Which halide among the following is used as methylating agent ?


45) Grignard reagent is not prepared in aqueous medium but prepared in ether medium because


46) Ethyl bromide on treatment with alcoholic KOH gives


47) Ethylene reacts with bromine to form


48) Alkyl halides react with Mg in dry ether to form


49) In which case formation of butane nitrile is possible ?


50) Alkyl halides react with lithium dialkyl copper reagents to give


51) Anti-Markownikoff addition of HBr is not observed in


52) Out of the following compounds, which one will have a zero dipole moment ?


53) The Cl-C-Cl angle in 1,1,2,2-tetrachloroethene and tetrachlorometane will be about


54) 1-Chlorobutane on reaction with alcohol potash gives


55) In the addition of HBr to propene in the absence of peroxides, the first step involves the addition of


56) The intermediate during the addition of HCl to propene presence of peroxide is


57) The number of possible enantiomeric pairs that can be produced during monochlorination of 2-methylbutane is


58) The reaction of propene with HOCl proceeds through the addition of


59) In the presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti-Markownikoff's addition to alkenes because


60) Among the following, the molecule with the highest dipole moment is


61) On monochlorination of 2-methylbutane, the total number of chiral compound is


62) Chloroform on reduction with Zn and HCl (alc.) gives


63) Westrosol is


64) Freon is used as


65) Chloroform is used as an


66) Chloroform is kept in dark coloured bottle because


67) Freon is


68) 20% aqueous solution of sodium chloride containing ethyl alcohol on electrolysis gives


69) Ethylene dichloride can be prepared by the reaction of HCl and


70) The compound which gives negative iodoform test is


71) A sample of chloroform before being used as an anaesthetic is tested by


72) Iodoform can be used in medicine as


73) Which is finally produced when acetylene reacts with HCl ?


74) Chloretone used as a drug is prepared by the reaction of acetone with


75) Which one is correct ?


76) A compound containing two - OH groups attached with one carbon atom is unstable but which one of the following is stable ?


77) Chloroform on reaction with acetone yields


78) Which will give a yellow precipitate with iodine and alkali?


79) Solvent is used in dry cleaning of clothes is


80) The industrial preparation of chloroform employs acetone and


81) Vicinal and geminal dihalides can be distinguished by


82) Which statement is wrong about chloroform ?


83) The hydrogen atom in chloroform is


84) Which compound is used in cooling ?


85) The substance employed as tear gas is


86) Which of the following is a camphor substitute ?


87) Which compound is used as helminthicide for elimination of book worms ?


88) The antiseptic character of iodoform is due to


89) Which of the following does not give iodoform test ?


90) The chloroform reacts with NaOH to give


91) On warming with sliver powder, chloroform is converted into


92) For the carbylamine reaction we need hot alc. KOH and


93) Slow oxidation of chloroform in air lead to


94) A compound that will form an offensive smell when heated with chloroform and alcoholic potash is


95) Which one of the following is mainly responsible for depletion of ozone layer ?


96) Reaction of ethylamine with chloroform in alcoholic KOH produces


97) Which of the following with aqueous KOH will give acetaldehyde ?


98) The reaction between primary amine, chloroform and alcoholic caustic potash is called ,


99) Unpleasant smell of carbylamine is obtained when chloroform and alcoholic KOH are heated with


100) Which of the following compounds give trichloromethane on distilling with bleaching powder ?


101) When chloroform is boiled with NaOH, it gives


102) The product formed on reaction of ethyl alcohol with bleaching powder is


103) Cyanoform is ...................... acid in nature than chloroform. The missing word is


104) How will you convert butan-2-one to propanoic acid ?


105) The insecticide and germicide, gammexane is a formulation for


106) Chlorobenzene is prepared commercially by


107) Aryl halides are less reactive towards nucleophilic substitution reaction as compared to alkyl halides due to


108) Ullmann reaction is used for the preparation of


109) Chlorobenzene on treatment with Raney nickel or Al in presence of alkali gives


110) Which of the following possesses highest melting point ?


111) The most reactive compound for electrophilic nitration will be


112) Which of the following compounds on oxidation gives benzoic acid ?


113) Which chloroderivative of benzene among the following would undergo hydrolysis most readily with aqueous sodium hydroxide to furnish the corresponding hydroxyderivative ?


114) Which of the following is a free radical substitution reaction ?


115) In which of the following reactions, the product is an ether ?


116) The decreasing order of reactivity of
(I) m-nitrobromobenzene
(II) 2,4,6-trinitrobromobenzene
(III) p-nitrobromobenzene
(IV) 2,4-dinitrobromobenzene


117) Carbon atom holding halogen in aryl halides is


118) Benzene hexachloride is used as


119) Benzene reacts with chlorine to form benzene hexachloride in presence of


120) A set of compounds in which reactivity of halogen atom in the ascending order is


121) Which of the following statements about benzyl chloride is incorrect ?


122) Chlorination of toluene in presence of light and heat followed by treatment with aqueous NaOH and acidification gives


123) Arrange the following compounds in order of increasing dipole moment:
(I) Toluene
(II) m-Dichlorobenzene
(III) o-Dichlorobenzene
(IV) p-Dichlorobenzene


124) The correct increasing order of reactivity of halogen gases towards halogenation of alkane is


125) Ethylene dichloride and ethylidene chloride are isomeric compounds. The false statement about these isomers is that they


126) Which of the following is a primary halide


127) Which of the following is most reactive towards nucleophilic substitution reaction ?


128) Which can undergo haloform reaction ?


129) Elimination of bromine from 2-bromobutane results in the formation of