McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Pharmacy (B. Pharma) , Pharmacy .
Chapters
| 201. |
Ketones where R =R1=1 alkyl group. It can be obtained in one step by |
| A. | Hydrolysis of esters |
| B. | Oxidation of primary alcohol |
| C. | Oxidation of secondary alcohol |
| D. | Reaction of acid halide with alcohols |
| Answer» C. Oxidation of secondary alcohol | |
| 202. |
The oxidation of toluene to benzaldehyde by chromyl chloride is called…….. |
| A. | Cannizzaro reaction |
| B. | Wurtz reaction |
| C. | Etard reaction |
| D. | Reimer-Tiemann reaction |
| Answer» C. Etard reaction | |
| 203. |
Catalyst use in the reamer tiemman reaction. |
| A. | LiAlH4 |
| B. | CuCl3 |
| C. | Ni / H2 |
| D. | Pd |
| Answer» B. CuCl3 | |
| 204. |
Dry heating of calcium acetate gives |
| A. | Acetaldehyde |
| B. | Ethane |
| C. | Acetic acid |
| D. | Acetone |
| Answer» D. Acetone | |
| 205. |
Acetophenone is prepared by the reaction of which of the following in the presence of AlCl3 catalyst…….. |
| A. | Phenol and acetic acid |
| B. | Benzene and acetone |
| C. | Benzene and acetyl chloride |
| D. | Phenol and acetone |
| Answer» C. Benzene and acetyl chloride | |
| 206. |
Isopropyl alcohol on oxidation gives……. |
| A. | Acetone |
| B. | Acetaldehyde |
| C. | Ether |
| D. | Ethylene |
| Answer» A. Acetone | |
| 207. |
Which of the following compound gives a ketone with Grignard reagent . |
| A. | Formaldehyde |
| B. | Ethyl alcohol |
| C. | Methyl cyanide |
| D. | Methyl iodide |
| Answer» C. Methyl cyanide | |
| 208. |
Benzaldehyde can be prepared by oxidation of toluene by …………. |
| A. | Acidic KMnO4 |
| B. | K2Cr2 O7 |
| C. | CrO2Cl2 |
| D. | All of these |
| Answer» C. CrO2Cl2 | |
| 209. |
CH3 CO CH3 can be obtained by ……….. |
| A. | Heating acetaldehyde with methanol |
| B. | Oxidation of propyl alcohol |
| C. | Oxidation of isopropyl alcohol |
| D. | Reduction of propionic acid |
| Answer» C. Oxidation of isopropyl alcohol | |
| 210. |
Propyne on hydrolysis in presence of HCl and HgSO4 gives…………. |
| A. | Acetaldehyde |
| B. | Acetone |
| C. | Formaldehyde |
| D. | None of these |
| Answer» B. Acetone | |
| 211. |
Which of the following on reaction with NH3 gives urinary antiseptic compound. |
| A. | HCHO |
| B. | CH3 CHO |
| C. | C6H5 CHO |
| D. | C6H5CH3CHO |
| Answer» A. HCHO | |
| 212. |
The oxidation product of 2-propanol with hot conc. HNO3 is ……….. |
| A. | Ethanoic acid |
| B. | Propanone |
| C. | Propanal |
| D. | None of these |
| Answer» B. Propanone | |
| 213. |
Ethyne on reaction with water in the presence of HgSO4 and H2SO4 gives………. |
| A. | Acetone |
| B. | Acetaldehyde |
| C. | Acetic acid |
| D. | Ethyl alcohol |
| Answer» B. Acetaldehyde | |
| 214. |
When a mixture of methane and oxygen is passed through heated molybdenum oxide, the main product formed is……….. |
| A. | Methanoic acid |
| B. | Ethanal |
| C. | Methanol |
| D. | Methanal |
| Answer» D. Methanal | |
| 215. |
Benzoin is……….. |
| A. | Compound containing an aldehyde and a ketonic group |
| B. | α , ß -unsaturated acid |
| C. | α-hydroxy aldehyde |
| D. | α -hydroxy ketone |
| Answer» D. α -hydroxy ketone | |
| 216. |
The oxidation of benzyl chloride with lead nitrate gives…………… |
| A. | Benzyl alcohol |
| B. | Benzoic acid |
| C. | Benzaldehyde |
| D. | p –chlorobenzaldehyde |
| Answer» C. Benzaldehyde | |
| 217. |
Glycerol reacts with potassium bisulphate to produce ………… |
| A. | Allyl iodide |
| B. | Allyl sulphate |
| C. | Acryl aldehyde |
| D. | Glycerol trisulphate |
| Answer» C. Acryl aldehyde | |
| 218. |
The reagent used in Gatterman Koch aldehyde synthesis is……….. |
| A. | Pb/ BaSO4 |
| B. | Alkaline KMnO4 |
| C. | Acidic KMnO4 |
| D. | CO + HCl |
| Answer» D. CO + HCl | |
| 219. |
Reduction of Aldehydes and Ketones to hydrocarbon take place in the presence of …………… |
| A. | Zn amalgam and HCl acid |
| B. | Pb /BaSO4 |
| C. | Anhydrous AlCl3 |
| D. | Ni / Pt |
| Answer» A. Zn amalgam and HCl acid | |
| 220. |
Reduction of CO to 2CH can be carried out with………… |
| A. | Catalytic reduction |
| B. | Na/ C2 H5 OH |
| C. | Wolf-Kischner reduction |
| D. | LiAlH4 |
| Answer» C. Wolf-Kischner reduction | |
| 221. |
For C2H5 CHO which of the following is incorrect………. |
| A. | On oxidation it yields benzoic acid |
| B. | It is used in perfumery |
| C. | It is an aromatic aldehyde |
| D. | On reduction yields phenol |
| Answer» D. On reduction yields phenol | |
| 222. |
Grignard reagent on reaction with acetone forms……… |
| A. | Tertiary alcohol |
| B. | Secondary alcohol |
| C. | Acetic acid |
| D. | Acetaldehyde |
| Answer» A. Tertiary alcohol | |
| 223. |
Which of the following is incorrect…………. |
| A. | FeCl3 is used in the detection of phenols |
| B. | Fehling solution is used in the detection of glucose |
| C. | Tollen’s reagent is used in detection of unsaturation |
| D. | NaHSO3 is used in the detection of carbonyl compounds |
| Answer» C. Tollen’s reagent is used in detection of unsaturation | |
| 224. |
Consider the following statement Acetophenone can be prepared by…………
|
| A. | 1 and 2 |
| B. | 1 and 4 |
| C. | 1 and 3 |
| D. | 3 and 4 |
| Answer» C. 1 and 3 | |
| 225. |
Which of the following products is formed when benzaldehyde is treated with CH3 MgBr and the addition product so obtained is subjected to acid hydrolysis. |
| A. | Secondary alcohol |
| B. | A primary alcohol |
| C. | Phenol |
| D. | Tert-Butyl alcohol |
| Answer» A. Secondary alcohol | |
| 226. |
Aldol condensation will not be observed in………. |
| A. | Chloral |
| B. | Phenyl acetaldehyde |
| C. | Hexanal |
| D. | Ethanol |
| Answer» A. Chloral | |
| 227. |
Which of the following organic compounds exhibits positive Fehling test as well as iodoform test…………. |
| A. | Methanal |
| B. | Ethanol |
| C. | Propanone |
| D. | Ethanal |
| Answer» D. Ethanal | |
| 228. |
Which of the following will undergo aldol condensation……… |
| A. | Acetaldehyde |
| B. | Propanaldehyde |
| C. | Benzaldehyde |
| D. | Trideuteroacetaldehyde |
| Answer» A. Acetaldehyde | |
| 229. |
Acetaldehyde cannot show ……………. |
| A. | Iodoform test |
| B. | Lucas test |
| C. | Benedict's test |
| D. | Tollen's test |
| Answer» B. Lucas test | |
| 230. |
Benzaldehyde + Sodium hydroxide |
| A. | Benzyl alcohol |
| B. | Benzoic alcohol |
| C. | Hydrobenzamide |
| D. | Cinnamic acid |
| Answer» A. Benzyl alcohol | |
| 231. |
Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde. This reaction is known as …………… |
| A. | Perkin’s reaction |
| B. | Cannizzaro’s reaction |
| C. | Sandmeyer’s reaction |
| D. | Claisen condensation |
| Answer» B. Cannizzaro’s reaction | |
| 232. |
To distinguish between formaldehyde and acetaldehyde, we require………. |
| A. | Tollen's reagent |
| B. | Fehling's solution |
| C. | Schiff's reagent |
| D. | Caustic soda solution |
| Answer» D. Caustic soda solution | |
| 233. |
Which of the following will not give iodoform test? |
| A. | Ethanal |
| B. | Ethanol |
| C. | 2-propanone |
| D. | 3-pentanon |
| Answer» D. 3-pentanon | |
| 234. |
Which of the following will not give the iodoform test ? |
| A. | Acetophenone |
| B. | Ethanal |
| C. | Benzophenone |
| D. | Ethanol |
| Answer» C. Benzophenone | |
| 235. |
Haloform test is given by the following substance…………… |
| A. | HCHO |
| B. | (CH3)2 CO |
| C. | CH3OCH3 |
| D. | CH3CH2Cl |
| Answer» B. (CH3)2 CO | |
| 236. |
Dimethyl ketones are usually characterized through…………. |
| A. | Tollen's reagent |
| B. | Iodoform test |
| C. | Schiff's test |
| D. | Benedict's reagent |
| Answer» B. Iodoform test | |
| 237. |
If formaldehyde and KOH heated then we gets, |
| A. | Acetylene |
| B. | Methane |
| C. | Methyl alcohol |
| D. | Ethyl formate |
| Answer» C. Methyl alcohol | |
| 238. |
Acetaldehyde reacts with C2H5 MgCl the final product is………… |
| A. | An aldehyde |
| B. | A ketone |
| C. | A primary alcohol |
| D. | A secondary alcohol |
| Answer» D. A secondary alcohol | |
| 239. |
Aldol condensation of acetaldehyde involves the formation of which of the following intermediate? |
| A. | Acetate ion |
| B. | A carbanion |
| C. | A carbonium ion |
| D. | A free radical |
| Answer» B. A carbanion | |
| 240. |
Aromatic aldehyde undergo disproportionation in presence of sodium or potassium hydroxide to give corresponding alcohol and acid. The reaction is known as ………….. |
| A. | Wurtz's reaction |
| B. | Cannizzaro reaction |
| C. | Friedel-Craft's reaction |
| D. | Claisen reaction |
| Answer» B. Cannizzaro reaction | |
| 241. |
Which of the following does not give yellow precipitate with KINaOH………… |
| A. | Acetone |
| B. | Acetaldehyde |
| C. | Benzaldehyde |
| D. | Acetophenone |
| Answer» C. Benzaldehyde | |
| 242. |
Which of the following does not turn Schiff's reagent to pink………… |
| A. | Formaldehyde |
| B. | Benzaldehyde |
| C. | Acetone |
| D. | Acetaldehyde |
| Answer» C. Acetone | |
| 243. |
Fehling's test is positive for………. |
| A. | Acetaldehyde |
| B. | Benzaldehyde |
| C. | Ether |
| D. | Alcohol |
| Answer» A. Acetaldehyde | |
| 244. |
Acetaldehyde and acetone differ in their reaction with………….. |
| A. | Sodium bisulphite |
| B. | Ammonia |
| C. | Phosphorus pentachloride |
| D. | Phenyl hydrazine |
| Answer» B. Ammonia | |
| 245. |
The final product formed when acetaldehyde is reduced with sodium and alcohol is………… |
| A. | Ethylene |
| B. | Ethyl alcohol |
| C. | Ethene |
| D. | All of these |
| Answer» B. Ethyl alcohol | |
| 246. |
The compound obtained by the reduction of propionaldehyde by amalgamated zinc and concentrated HCl is……………. |
| A. | Propanol |
| B. | Propane |
| C. | Propene |
| D. | All of these |
| Answer» B. Propane | |
| 247. |
Formaldehyde when treated with KOH gives methanol and potassium formate. The reaction is known as……….. |
| A. | Perkin reaction |
| B. | Claisen reaction |
| C. | Cannizzaro reaction |
| D. | Knoevenagel reaction |
| Answer» C. Cannizzaro reaction | |
| 248. |
Acetaldehyde reacts with …………… |
| A. | Electrophiles only |
| B. | Nucleophiles only |
| C. | Free radicals only |
| D. | Both electrophiles and nucleophiles |
| Answer» B. Nucleophiles only | |
| 249. |
The typical reactions of aldehyde is…………………. |
| A. | Electrophilic addition |
| B. | Nucleophilic substitution |
| C. | Nucleophilic addition |
| D. | Nucleophilic elimination |
| Answer» C. Nucleophilic addition | |
| 250. |
Which will not give acetamide on reaction with ammonia ………… |
| A. | Acetic acid |
| B. | Acetyl chloride |
| C. | Acetic anhydride |
| D. | Methyl formate |
| Answer» D. Methyl formate | |
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