Alcohols, Phenols & Ethers PYQs Set 7 (PDF)

Set 7 of 14 · Questions 181-210 of 396

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Mere Teacher · Previous Year Questions NEET Chemistry · Alcohols, Phenols & Ethers · Set 7 (Q181-210)
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181. $Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Butylated hydroxyl anisole when added to butter increases its shelf life. Reason R : Butylated hydroxyl anisole is more reactive towards oxygen than food. choose the most appropriate answer from the options given below:$ (1) $Both A and R are correct and R is the correct explanation of A.$ (2) $A is correct but R is not correct.$ (3) $A is not correct but R is correct.$ (4) $Both A and R are correct but R is NOT the correct explanation of A.$ 182. $The reactioncan be classified as$ (1) $dehydration reaction$ (2) $Williamson alcohol synthesis reaction$ (3) $Williamson ether synthesis reaction$ (4) $alcohol formation reaction.$ 183. $Identify Z in the following reaction$ (1) $CH_{2} = CH_{2}$ (2) $CH_{3} CH_{2} OH$ (3) $CH_{3} CH_{2} - O - CH_{2} CH_{3}$ (4) $CH_{3} CH_{2} - SO_{3} H$ 184. $Which of the following compounds has highest boiling point?$ (1) $Propan-1-ol$ (2) $n-Butane$ (3) $Chloroethane$ (4) $Propanal$ 185. $When phenol is treated with excess bromine water. It gives$ (1) $m ‐bromophenol$ (2) $o‐ and p ‐bromophenols$ (3) $2,4‐dibromophenol$ (4) $2,4,6‐tribromophenol.$ 186. $HBr reacts fastest with$ (1) $2 - m e t h y l p r o p an - 1 - o l$ (2) $methylpropan-2-ol$ (3) $p r o p an - 2 - o l$ (4) $propan-1-ol$ 187. $Given The enthalpy of hydrogenation of these compounds will be in the order as :$ (1) $III > II > I$ (2) $II > III > I$ (3) $II > I > III$ (4) $I > II > III$ 188. $What is the number of s p^{3} hybrid carbon atoms in HO (CH_{2})_{3} CH (CH_{3}) CH (CH_{3})_{2} ?$ (1) $Five$ (2) $Two$ (3) $Eight$ (4) $Four$ 189. $What is the number of hydroxyl group present in propylene glycerol?$ (1) $2$ (2) $1$ (3) $4$ (4) $3$ 190. $Which of the following does not give benzoic acid on hydrolysis?$ (1) $Phenyl cyanide$ (2) $Benzyl chloride$ (3) $Benzoyl chloride$ (4) $Methyl benzoate$ 191. $What is the possible number of monohydroxy derivatives of a hydrocarbon consisting of five carbon atoms with one methyl group as a branch?$ (1) $2$ (2) $3$ (3) $4$ (4) $5$ 192. $The product formed when hydroxylamine condenses with a carbonyl compound is called$ (1) $hydrazide$ (2) $oxime$ (3) $hydrazine$ (4) $hydrazone.$ 193. $HCHO was treated with a reagent X . The product formed upon hydrolysis in the presence of an acid gave C_{2} H_{5} OH . The reagent X is$ (1) $aqueous KOH$ (2) $alcoholic KOH$ (3) $alcoholic KCN$ (4) $CH_{3} MgI .$ 194. $Which one is formed when sodium phenoxide is heated with ethyl iodide?$ (1) $Phenetole$ (2) $Ethyl phenyl alcohol$ (3) $Phenol$ (4) $None of these$ 195. $According to carbinol system, name of isopropyl alcohol is$ (1) $Methyl carbinol$ (2) $Ethyl carbinol$ (3) $Dimethyl carbinol$ (4) $Isopropyl carbinol$ 196. $Which is the most suitable reagent for the following conversion?$ (1) $Tollens’ reagent$ (2) $Benzoyl peroxide$ (3) $I_{2} and NaOH solution with subsequent acidification$ (4) $Sn and NaOH solution$ 197. $By heating phenol with chloroform in alkali, it is converted into$ (1) $salicylic acid$ (2) $salicylaldehyde$ (3) $anisole$ (4) $phenyl benzoate.$ 198. $Reaction between acetone and methyl magnesium chloride followed by hydrolysis will give [NEET 2020]$ (1) $iso-propyl alcohol$ (2) $sec-butyl alcohol$ (3) $tert-butyl alcohol$ (4) $iso-butyl alcohol$ 199. $Given below are two statements : Statement I: Ethyl pent-4-yn-oate on reaction with C H_{3} MgBr gives a 3^{0} -alcohol. Statement II: In this reaction one mole of ethyl pent-4-yn-oate utilizes two moles of C H_{3} MgBr. choose the most appropriate answer from the options given below :$ (1) $Both Statement I and Statement II are false.$ (2) $Statement I is false but Statement II is true.$ (3) $Statement I is true but Statement II is false.$ (4) $Both Statement I and Statement II are true.$ 200. $When phenol is treated with C H C l_{3} and NaOH, the product formed is$ (1) $benzaldehyde$ (2) $salicylaldehyde$ (3) $salicylic acid$ (4) $benzoic acid.$ 201. $Among the following sets of reactants which one produces anisole?$ (1) $C H_{3} C H O; R M g X$ (2) $C_{6} H_{5} O H; N a O H; C H_{3} I$ (3) $C_{6} H_{5} O H; neutral F e C l_{3}$ (4) $C_{6} H_{5} C H_{3}; C H_{3} C O C l; A l C l_{3}$ 202. $The major products of Reimer-Tiemann reaction and Kolbe reaction are respectively$ (1) (2) (3) (4) 203. $An organic compound 'A' with empirical formula C_{6} H_{6} O gives sooty flame on burning. Its reaction with bromine solution in low polarity solvent results in high yield of B. B is OH$ (1) (2) (3) (4) 204. $Consider the following reaction \to P anhydride Chromic The product ’ P ’ gives positive ceric ammonium nitrate test. This is because of the presence of which of these - OH group (s) ?$ (1) $(d) only$ (2) $(c) and (d)$ (3) $(b) only$ (4) $(b) and (d)$ 205. $The compound on dehydrogenation gives a ketone. The original compound is$ (1) $tertiary alcohol$ (2) $caboxylic acid$ (3) $primary alcohol$ (4) $secondary alcohol.$ 206. $The compound which reacts fastest with Lucas reagent at room temperature is$ (1) $butan‐l‐ol$ (2) $butan‐2‐ol$ (3) $2‐methylpropan‐1‐ol$ (4) $2‐methylpropan‐2‐ol.$ 207. $Identify the product when phenol is heated with zinc dust.$ (1) $Benzoquinone$ (2) $Cyclohexane$ (3) $Benzene$ (4) $Cyclohexanol$ 208. $Which is most viscous?$ (1) $Ethylene glycol$ (2) $Glycerol$ (3) $Methanol$ (4) $Ethanol$ 209. $The intermediate X, in the reaction is$ (1) (2) (3) (4) 210. $The reaction, is called$ (1) $Etard reaction$ (2) $Gattermann‐Koch reaction$ (3) $Williamson synthesis$ (4) $Williamson continuous etherification process.$