MCQ TEST ON ALKYL HALIDES FOR AIEEE & PMT

TEST ON ALKYL HALIDESQuestions: 1. In the reaction, the product formed is (a) 4 – Methyl -2- pentyne only (b) Propyne (c) Propyne and propylene (d) Mixture of Propene, Propyne and 4-Methyl -2-pentyne 2. X on treatment with sodium hydroxide followed by the addition of sliver nitrate give white precipitate at room temp. Which are soluble in can be: (a) Chlorobenzene (b) Ethylbromide (c) Benzylchloride (d) Vinylchloride 3. Which of the following compounds is not formed when a mixture of methyl bromide and ethyl bromide is treated with sodium metal in the presence of dry ether? (a) Methane (b) Ethane (c) Propane (d) Butane 4. Which of the following halide is most reactive towards Nucleophilic substitution reactions? (a) C2H5Br (b) C2H5Cl (c) C2H5F (d) C2H5I 5. Identify C in the following series 6. The chemical reaction : is an example of: (a) Nucleophilic substitution (b) Electrophilic substitution (c) Free radical substitution (d) 7. Which of the following is the correct order of decreasing reactivity towards nucleophilic substitution? (a) Vinyl chloride > Allyl > Propyl chloride (b) Allyl chloride > Propyl chloride > Vinyl chloride (c) Allyl chloride > Vinyl chloride > Propyl chloride (d) Propyl chloride > Vinyl chloride > Allyl chloride 8. The reaction follows …………. Mechanism’ (a) (b) (c) SE1 (d) SE2 9. Isopropyl isocyanide can be obtained by the reaction between (a) CH3 CH2CH2I and AgCN (b) CH3CH(Br)CH3 and KCN (c) (CH3)2 CHI and AgCN (d) (CH3)2 CHCl and HCN 10. When isopropyl iodide in ethereal solution is warmed with sodium, the product formed is: (a) n-Hexane (b) Neohexane (c) 2,3-Dimethylbutane (d) mixture of the above 11. In the reaction A is: (a) Phenol (b) Sodium Phenoxide (c) Benzol (d) Benzene 12. On treating phenol with PCl5 the main product is (a) Chlorobenzene (b) Triphenylphosphate (c) Hexachlorobenzene (d) BHC 13. A suspension of CaOCl2 in water is heated with Ethanol, the product formed is: (a) ethylene (b) Trichloromethane (c) Ethanol (d) Chloroethane 14. Ullmann reaction involves the use of following reactants (a) Iodobenzene and sodium (b) Benzene and copper (c) Iodobenzene and copper powder (d) Benzene diazonium chloride and Current Electricity, Heating, Chemical and Thermoelectric of Current / HCl. 15. Which of the following cannot react with sodium hypoiodite? (a) Methanol (b) Ethanol (c) 2-Propanol (d)All of these will react. 16. Which types of isomerism is shown by the following pairs of compounds : Ethylene dichloride and Ethyledene dichloride? (a) Chain isomerism (b) Position isomerism (c) Metamerism (d) Tautomerism 17. Ethylene dibromide is heated with metallic zinc in the presence of react with hydrogen bromide. The product is: (a) Ethylene dibomide (b) Ethyl bromide (c) Ethyledene dibomide (d) none of above. 18. Aryl halides are less reactive towards nucleophilic substitution reactions as compared to alkyl halides (a) the formation of less stable carbonium ion (b) resonance stabilization (c) larger carbon-hydrogen bond (d) the inductive effect. 19. Chlorobenzene can be prepared by reacting aniline (a) Hydroochloric acid (b) Cuprous chloride (c) Chloride in presence of anhydrous aluminum chloride (d) Nitrous acid followed by heating with cuprous chloride. 20. A highly viscous compound (X) on reacting with conc. HNO3 gives CO2, N2, O2 as gaseous products. With KMnO4 it gives a compound (Y) of the molecular formula C2O4H2 which can also be obtained from glycol using same reagent. The compound (X) is (a) Phenol (b) Glycerol (c) Glycollic acid (d) None of the above 21. Which of the following can not be produced by dehydration of alcohols? (a) Ethers (b) Aldehyde (c) Alkyl hydrogen (d) Alkene The above reaction is an example of Reimer Tiemann Reaction Schotten Reaction Acetylation Benzoylation 23. Salol can be used as (a) Antiseptic (b) Antipyretic (c) Both (d) None. 24. How many isomers of will be primary alcohols? (a) 5 (b) 2 (c) 4 (d) 3 25. Salicylaldehyde can be prepared from (a) phenol and chloroform (b) phenol, chooroform and sodium hydroxide (c) phenol, carbon tetrachloride and NaOH (d) None 26. Glycerol can be obtained from (a) Fats (b) Propylene (c) Both (d) None 27. Rectified spirit is a mixture of (a) 95% ethyl alcohol +5% water (b) 94% ethyl alcohol + 4.53% water (c) 94.4 % ethyl alcohol + 5.43% water (d) 95.87% ethyl alcohol +4.13% water 28. Ethyl alcohol is heated with cone. H2SO4. The product form is: 29. Identify Z in the series 30. Primary and secondary alcohol on action of red hot copper give (a) Aldehydes and ketones respectively (b) Ketones and aldehydes respectively (c) only aldehydes (d) only ketones 31. Benzyl alcohol is obtained from Benzaldehyde by (a) Fitting’s reaction (b) Cannizzaro’s reaction (c) Kolbe’s reaction (d) Wurtz’s reaction 32. Methanol is manufactured by passing compressed water gas with excess of hydrogen over. (a) platinised asbestos (b) hot cobalt (c) truly divided metal (d) a hot mixture of Zn & Cr oxide. 33. The correct decreasing order of ease of acid catalysed esterification is (a) CH3CH2CH2CH2OH>CH3CH2CH(OH)CH3> (CH3)C(CH3)OH(CH3) (b) CH3CH2CH(OH)CH3>CH3CH2CH2CH2OH> CH3C(CH3)(OH)CH3 (c) (CH3)C(CH3)(OH)CH3>CH3CH2CH(OH)CH3> CH3CH2CH2 CH2OH (d) None of the above. 34. Electrophilic substitution in phenol generally occurs at (a) o- and p- position (b) metapositions (c) only at ortho positions (d) only at para position 35. Ethyl alcohol can be used for preparation of which of the following (a) All the following compounds (b) Ethyl acetate (c) Ethylene (d) Acetic acid 36. Phenol is more readily soluble in (a) dil HCl (b) Both NaOH and HCl (c) NaOH sol (d) Sodium bicarbonate solution 37. Grignard reagent on reaction with acetone forms (a) Tertiary alcohol (b) Secondary alcohol (c) Acetic acid (d) Acetaldehyde 38. Which of the following will convert propanoic acid to propan-1-ol? (a) KMnO4 (b) MnO2 (c) Cr2O3 (d) LiAlH4 39. Which of the following statement is correct? (a) Phenol is less acidic than ethyl alcohol (b) Phenol is more acidic than ethyl alcohol (c) Phenol is more acidic than carbonic acid (d) Phenol is more acidic than CH3COOH. 40. Ethyl alcohol gives ethyl chloride with the help of (a) SOCl2 (b) NaCl (c) Cl2 (d) KCl 41. In glycerine (a) One primary –OH group is present only (b) One teriary –OH group is present only (c) Two secondary –OH groups are present (d) One secondary –OH group is present 42. Which of the following process is employed to convert alkyl halide into alcohol? (a) Addition (b) Substitution (c) Dehydrohalogenation (d) Molecu;ar rearrangement 43. When primary alcohol is oxidized with Cl2, it gives (a) CH3CHO (b) CH3COCH3 (c) CH3COCl (d) COCl2 44. The chemical name of Salol is: (a) Acetyl salicylic acid (b) Sodium salicylate (c) Phenyl salicylate (d) Methyl salicylate 45. Which one has highest boiling point? (a) Butan-2-ol (b) Ethane (c) Butane (d) Pentane 46. The boiling point of glycerol is more than propanal because of: (a) Hybridisation (b) H-bonding (c) Resonance (d) All these factors 47. Zinc powder . In the above reaction the product X will be (a) Benzaldehyde (b) Benzene (c) Anisole (d) Phenyl acetate. 48. Proof sprit contains about (a) 40% alcohol by weight (b) 50% alcohol by weight (c) 25% alcohol by weight (d) 10% alcohol by weight 49. 1-Phenylethanol can be prepared by reaction of benzaldehyde with (a) Methyl iodide and Magnesium (b) Methyl bromide (c) Methyl bromide and AlBr3 50. Conversion of ethyl alcohol in to acetaldehyde is an example of (a) Reduction (b) Molecular rearrangement (c) Hydrolysis (d) Oxidation. ****** 1 *** Mrs. Shallu Aggarwal Mobile #. 9878608983 ***