Alcohols, Phenols & Ethers PYQs Set 6 (PDF)

Set 6 of 14 · Questions 151-180 of 406

In the print window choose “Save as PDF”. The file prints without a web address or date line.

Mere Teacher · Previous Year Questions JEE Main Chemistry · Alcohols, Phenols & Ethers · Set 6 (Q151-180)
Scan or visit mereteacher.com for free PYQ practice, timed CBT tests, step-by-step solutions and BroBot AI. Answers and solutions are free with a sign-up.
151. $The heating of phenyl-methyl ethers with HI produces. [NEET 2017]$ (1) $ethyl chlorides$ (2) $iodobenzene$ (3) $phenol$ (4) $benzene$ 152. $Which one of the following compounds is resistant to nucleophilic attack by hydroxyl ions?$ (1) $Diethyl ether$ (2) $Acetonitrile$ (3) $Acetamide$ (4) $Methyl acetate$ 153. $An organic compound (A) (molecular formula C_{6} H_{12} O_{2}) was hydrolysed with dil. H_{2} SO_{4} to give a carboxylic acid (B) and an alcohol (C) . ’ C gives white turbidity immediately when treated with anhydrou ZnCl_{2} and conc. HCl . The organic compound (A) is$ (1) (2) (3) (4) 154. $The major product of the following reaction is$ (1) $CH_{3} CH_{2} CH_{3}$ (2) $CH_{3} CH = CH_{2}$ (3) $CH_{3} C \equiv CH$ (4) $CH_{3} COCH_{3}$ 155. $Reaction of phenol with chloroform in the presence of dilute sodium hydroxide finally introduces, which one of the following functional group?$ (1) $- CH_{2} Cl$ (2) $-COOH$ (3) $- CHCl_{2}$ (4) $-CHO$ 156. $Match List-I with List-II. Choose the correct answer from the options given below:$ (1) $(A)-(IV), (B)-(I), (C)-(III), (D)-(II)$ (2) $(A)-(II), (B)-(III), (C)-(I), (D)-(IV)$ (3) $(A)-(II), (B)-(I), (C)-(III), (D)-(IV)$ (4) $(A)-(IV), (B)-(III), (C)-(I), (D)-(II)$ 157. $Identify B and D in the following sequence of reactions.$ (1) $Methanol and bromoethane$ (2) $Ethyl hydrogen sulphate and alcoholic KOH$ (3) $Ethyl hydrogen sulphate and aqueous KOH$ (4) $Ethanol and alcoholic KOH$ 158. $Given below are two statements: Statement (I) : p-nitrophenol is more acidic than m -nitrophenol and o-nitrophenol. Statement (II) : Ethanol will give immediate turbidity with Lucas reagent. In the light of the above statements, choose the correct answer from the options given below :$ (1) $Statement I is true but Statement II is false$ (2) $Both Statement I and Statement II are true$ (3) $Both Statement I and Statement II are false$ (4) $Statement I is false but Statement II is true$ 159. $A (C_{4} H_{8} C l_{2}) Hydrolysis 373 K B (C_{4} H_{8} O) B reacts with Hydroxyl amine but does not give Tollen's test. Identify A and B.$ (1) $1, 1-Dichlorobutane and 2-Butanone$ (2) $2, 2- Dichlorobutane and Butan-2-one$ (3) $2,2 - Dichlorobutane and Butanal$ (4) $1,1 - Dichlorobutane and Butanal$ 160. $L-isomer of tetrose X(C_{4} H_{8} O_{4}) gives positive Schiff s test and has two chiral carbons. On acetylation 'X' yields triacetate. 'X' also undergoes following reactions.$ (1) (2) (3) (4) 161. $Which intermediate is formed in the Reimer-Tiemann reaction?$ (1) $Aldehyde$ (2) $Carbocation$ (3) $Carbanion$ (4) $Substituted benzal chloride$ 162. $Which of the following is a pair of dihydric phenols?$ (1) $Resorcinol and Pyrogallol$ (2) $Quinol and Phloroglucinol$ (3) $Phloroglucinol and Pyrogallol$ (4) $Catechol and Quinol$ 163. $Which of the following organic compounds answers to both iodoform test and Fehlings test?$ (1) $Ethanal$ (2) $Propanone$ (3) $Ethanol$ (4) $Methanal$ 164. $In the reaction, the electrophile involved is [NEET 2018]$ (1) $dichloromethyl cation (C + HCl_{2})$ (2) $formyl cation (C + HO)$ (3) $dichloromethyl anion (C HCl_{2})$ (4) $dichlorocarbene (: CCl_{2})$ 165. $What is 'X' in the given reaction? C H_{2} O H ∣ C H_{2} O H + oxalic acid 21 0^{\circ} C X (major product)$ (1) $C H_{2} ∣∣ C H_{2}$ (2) $C H - O H ∣∣ C H_{2}$ (3) $C H_{2} O H ∣ C H O$ (4) $C H O ∣ C H O$ 166. $Power alcohol is a mixture of$ (1) $80 % Petrol + 20 % Benzene + Small quantity of Ethanol$ (2) $80 % Petrol + 20 % Ethanol + Small quantity of Benzene$ (3) $80 % Ethanol + 20 % Benzene + Small quantity of Petrol$ (4) $50 % Petrol + 50 % Ethanol + Small quantity of Benzene$ 167. $Which one is the most acidic compound?$ (1) (2) (3) (4) 168. $Waxes are esters of$ (1) $glycerol and fatty acid$ (2) $long chain alcohols and long chain fatty acids$ (3) $glycerol$ (4) $long chain alcohols.$ 169. $Oil of winter green is$ (1) $an ester$ (2) $a carboxylic acid$ (3) $an alcohol$ (4) $a ketone.$ 170. $Lucas test is associated with$ (1) $phenol$ (2) $carboxylic acid$ (3) $alcohols$ (4) $aldehydes.$ 171. $The reactions which produce alcohol as the product are: (A) CH_{4} + O_{2} Mo_{2} O_{3} Δ (B) 2 CH_{3} CH_{3} + 3 O_{2} (CH_{3} COO)_{2} Mn Δ (C) (CH_{3})_{3} CH KMnO_{4} (D) 2 CH_{4} + O_{2} \frac{\frac{Cu}{523 K}}{100 atm} . (E) CH_{3} - CH = CH - CH_{3} \frac{KMnO _{4}}{H ^{+}} Choose the correct answer from the options given below:$ (1) $(A), (C) and (E) Only$ (2) $(A) and (D) Only$ (3) $(C) and (D) Only$ (4) $(B), (D) and (E) Only$ 172. $Denatured alcohol is$ (1) $ethanol + methanol$ (2) $rectified spirit + methanol + naphtha$ (3) $undistilled ethanol$ (4) $rectified spirit.$ 173. $Which of the following is correct?$ (1) $On reduction, any aldehyde gives secondary alcohol.$ (2) $Reaction of vegetable oil with H_{2} S O_{4} gives glycerine.$ (3) $Alcoholic iodine with NaOH gives iodoform.$ (4) $Sucrose on reaction with N a C l gives invert sugar.$ 174. $Given below are two statements: Statement I: Phenol on treatment with CHCl_{3} /aq. KOH under refluxing condition, followed by acidification produces p -hydroxy benzaldehyde as the major product and o -hydroxy benzaldehyde as the minor product. Statement II: The mixture of p -hydroxybenzaldehyde and o hydroxybenzaldehyde can be easily separated through steam distillation. In the light of the above statements, choose the correct answer from the options given below$ (1) $Statement I is true but Statement II is false$ (2) $Statement I is false but Statement II is true$ (3) $Both Statement I and Statement II are true$ (4) $Both Statement I and Statement II are false$ 175. $Ethanol is converted into ethoxyethane$ (1) $by heating excess of ethanol with conc. H_{2} SO_{4} at 140^{\circ} C$ (2) $by heating ethanol with excess of conc. H_{2} SO_{4} at 443 K$ (3) $by treating with conc. H_{2} SO_{4} at room temperature$ (4) $by treating with conc. H_{2} SO_{4} at 273 K .$ 176. $Benedict's test and will not produce an orange-red precipitate. In the following reaction$ (1) (2) (3) (4) 177. $Compound A, C_{8} H_{10} O, is found to react with NaOI (produced by reacting Y with NaOH) and yields a yellow precipitate with characteristic smell. A and Y are respectively$ (1) $p - C H_{3} C_{6} H_{4} C H_{2} OH and I_{2}$ (2) $p - C H_{3} C_{6} H_{4} C H_{2} C H_{2} OH and I_{2}$ (3) $p - C H_{3} C_{6} H_{4} CH (OH) C H_{3} and I_{2}$ (4) $(C H_{3})_{2} C_{6} H_{3} OH (dimethylphenol) and I_{2}$ 178. $Which one of the following on oxidation gives a ketone?$ (1) $Primary alcohol$ (2) $Secondary alcohol$ (3) $Tertiary alcohol$ (4) $All of these$ 179. $'A' formed in the above reaction is$ (1) (2) (3) (4) 180. $What is formed when a primary alcohol undergoes catalytic dehydrogenation?$ (1) $Aldehyde$ (2) $Ketone$ (3) $Alkene$ (4) $Acid$