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
| 151. |
Which compound has the highest boiling point…… |
| A. | Acetone |
| B. | Diethyl ether |
| C. | Methanol |
| D. | Ethanol |
| Answer» D. Ethanol | |
| 152. |
Dehydration of ethanol gives…… |
| A. | Acetic acid |
| B. | Ethane |
| C. | Ethylene |
| D. | Acetylene |
| Answer» C. Ethylene | |
| 153. |
Absolute ethanol cannot be obtained by simple fraction of a solution of ethanol and water because….. |
| A. | Their B.P.'s are very nearer |
| B. | Ethanol remains dissolved in water |
| C. | They form a constant boiling mixture |
| D. | Ethanol molecules are solvated |
| Answer» C. They form a constant boiling mixture | |
| 154. |
In esterification, the reactivity of alcohols is …… |
| A. | 1° > 2° > 3° |
| B. | 3° > 2° > 1° |
| C. | Same in all cases |
| D. | None of these |
| Answer» A. 1° > 2° > 3° | |
| 155. |
Methanol and ethanol are distinguished by the……. |
| A. | Action of HCl |
| B. | Iodoform test |
| C. | Solubility in water |
| D. | Sodium |
| Answer» B. Iodoform test | |
| 156. |
Ethyl alcohol exhibits acidic character on reacting with……. |
| A. | Acetic acid |
| B. | Sodium metal |
| C. | Hydrogen iodide |
| D. | Acidic potassium dichromate |
| Answer» B. Sodium metal | |
| 157. |
Which of the following is not characteristic of alcohols…… |
| A. | They are lighter than water |
| B. | Their boiling points rise fairly uniformly with increasing molecular weight |
| C. | Lower members are insoluble in water and organic solvents but solubility regularly increases with molecular weight |
| D. | Lower members have pleasant smell and burning taste, while higher members are odourless and tasteless |
| Answer» C. Lower members are insoluble in water and organic solvents but solubility regularly increases with molecular weight | |
| 158. |
By means of calcium chloride which of following can be dried…… |
| A. | Methanol |
| B. | Ethanol |
| C. | Both (a) and (b) |
| D. | None of these |
| Answer» D. None of these | |
| 159. |
Dimethyl ether and ethyl alcohol are ….. |
| A. | Branched isomer |
| B. | Position isomer |
| C. | Functional isomer |
| D. | Tautomer |
| Answer» C. Functional isomer | |
| 160. |
The process of manufacture of absolute alcohol from rectified spirit is……. |
| A. | Fractional distillation |
| B. | Steam distillation |
| C. | Azeotropic distillation |
| D. | Vacuum distillation |
| Answer» C. Azeotropic distillation | |
| 161. |
When ethyl alcohol reacts with acetic acid, the products formed are….. |
| A. | Sodium ethoxide + hydrogen |
| B. | Ethyl acetate + water |
| C. | Ethyl acetate + soap |
| D. | Ethyl alcohol + water |
| Answer» B. Ethyl acetate + water | |
| 162. |
Methanol and ethanol are miscible in water due to….. |
| A. | Covalent character |
| B. | Hydrogen bonding character |
| C. | Oxygen bonding character |
| D. | None of these |
| Answer» B. Hydrogen bonding character | |
| 163. |
Which of the following is most soluble in water…… |
| A. | Normal butyl alcohol |
| B. | Isobutyl alcohol |
| C. | Tertiary butyl alcohol |
| D. | Secondary butyl alcohol |
| Answer» C. Tertiary butyl alcohol | |
| 164. |
If ethanol dissolves in water, then which of the following would be done…… |
| A. | Absorption of heat and contraction in volume |
| B. | Emission of heat and contraction in volume |
| C. | Absorption of heat and increase in volume |
| D. | Emission of heat and increase in volume |
| Answer» B. Emission of heat and contraction in volume | |
| 165. |
When rectified spirit and benzene are distilled together, the first fraction obtained is…… |
| A. | A ternary azeotrope |
| B. | Absolute alcohol |
| C. | A binary azeotrope |
| D. | Denatured spirit |
| Answer» A. A ternary azeotrope | |
| 166. |
Alcohols combine with acetylene in the presence of mercury compounds as catalyst to form……. |
| A. | Acetals |
| B. | Xanthates |
| C. | Vinyl ethers |
| D. | None of the above |
| Answer» A. Acetals | |
| 167. |
The boiling point of methanol is greater than that of methyl thiol because |
| A. | There is intramolecular hydrogen bonding in methanol and intermolecular hydrogen bonding in methyl thiol |
| B. | There is intermolecular hydrogen bonding in methanol and no hydrogen bonding in methyl thiol |
| C. | There is no hydrogen bonding in methanol and intermolecular hydrogen bonding in methyl thiol |
| D. | There is intramolecular hydrogen bonding in methanol and no hydrogen bonding in methyl thiol |
| Answer» B. There is intermolecular hydrogen bonding in methanol and no hydrogen bonding in methyl thiol | |
| 168. |
At 530 K , glycerol reacts with oxalic acid to produce ……. |
| A. | Allyl alcohol |
| B. | Formic acid |
| C. | Glyceraldehyde |
| D. | Glycerol monooxalate |
| Answer» A. Allyl alcohol | |
| 169. |
With anhydrous zinc chloride, ethylene glycol gives……. |
| A. | Formaldehyde |
| B. | Acetylene |
| C. | Acetaldehyde |
| D. | Acetone |
| Answer» C. Acetaldehyde | |
| 170. |
Amongst the following, HBr reacts fastest with……. |
| A. | Propane-1-ol |
| B. | Propane-2-ol |
| C. | 2-methyl propane-1-ol |
| D. | 2-methyl propane-2-ol |
| Answer» D. 2-methyl propane-2-ol | |
| 171. |
Which alcohol reacts with fatty acids to form fats……. |
| A. | Ethanol |
| B. | Glycerol |
| C. | Methanol |
| D. | Isopropanol |
| Answer» B. Glycerol | |
| 172. |
Which will dehydrate easily……. |
| A. | 3-methyl-2-butanol |
| B. | Ethyl alcohol |
| C. | 2-methyl propane-2-ol |
| D. | 2-methyl butanol-2 |
| Answer» D. 2-methyl butanol-2 | |
| 173. |
On reaction with hot conc. H2SO4 which one of the following compounds loses a molecule of water…. |
| A. | CH3COCH3 |
| B. | CH3COOH |
| C. | CH3OCH3 |
| D. | CH3CH2OH |
| Answer» D. CH3CH2OH | |
| 174. |
C2H5OH can be differentiated from CH3OH by….. |
| A. | Reaction with HCl |
| B. | Reaction with 3 NH |
| C. | By iodoform test |
| D. | By solubility in water |
| Answer» C. By iodoform test | |
| 175. |
Glycerol is used in the manufacture of |
| A. | Dynamite |
| B. | Varnish |
| C. | Paints |
| D. | Soft drinks |
| Answer» A. Dynamite | |
| 176. |
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. | 95.57% ethyl alcohol + 4.43% water |
| Answer» D. 95.57% ethyl alcohol + 4.43% water | |
| 177. |
Glycerol as a triester present in ……. |
| A. | Petroleum |
| B. | Kerosene |
| C. | Vegetable oil and fat |
| D. | Naphtha |
| Answer» C. Vegetable oil and fat | |
| 178. |
: Power alcohol is …… |
| A. | An alcohol of 95% purity |
| B. | A mixture of petrol hydrocarbons and ethanol |
| C. | Rectified spirit |
| D. | A mixture of methanol and ethanol |
| Answer» B. A mixture of petrol hydrocarbons and ethanol | |
| 179. |
: In cold countries ethylene glycol is added to water in the radiators to |
| A. | Bring down the specific heat of water |
| B. | Lower the viscosity |
| C. | Reduce the viscosity |
| D. | Make water a better lubricant |
| Answer» A. Bring down the specific heat of water | |
| 180. |
Alcoholic fermentation is brought about by the action of |
| A. | CO2 |
| B. | O2 |
| C. | Invertase |
| D. | Yeast |
| Answer» D. Yeast | |
| 181. |
Methyl alcohol is toxic. The reason assigned is……… |
| A. | It stops respiratory track |
| B. | It reacts with nitrogen and forms CN in the lungs |
| C. | It increases CO2 content in the blood |
| D. | It is a reduction product of formaldehyde |
| Answer» B. It reacts with nitrogen and forms CN in the lungs | |
| 182. |
Glycerol is used…….. |
| A. | As a sweetening agent |
| B. | In the manufacture of good quality soap |
| C. | In the manufacture of nitro glycerine |
| D. | In all of these |
| Answer» D. In all of these | |
| 183. |
Glycerol is not used in which of following cases……. |
| A. | Explosive making |
| B. | Shaving soap making |
| C. | As an antifreeze for water |
| D. | As an antiseptic agent |
| Answer» D. As an antiseptic agent | |
| 184. |
Liquor poisoning is due to ……. |
| A. | Presence of bad compound in liquor |
| B. | Presence of methyl alcohol |
| C. | Presence of ethyl alcohol |
| D. | Presence of carbonic acid |
| Answer» B. Presence of methyl alcohol | |
| 185. |
In order to make alcohol undrinkable pyridine and methanol are added to it. The resulting alcohol is called ……… |
| A. | Power alcohol |
| B. | Proof spirit |
| C. | Denatured spirit |
| D. | Poison alcohol |
| Answer» C. Denatured spirit | |
| 186. |
Wine (alcoholic beverages) contains ……… |
| A. | CH3OH |
| B. | Glycerol |
| C. | C2H5OH |
| D. | 2-propanol |
| Answer» C. C2H5OH | |
| 187. |
Which is used as an antifreeze……. |
| A. | Glycol |
| B. | Ethyl alcohol |
| C. | Water |
| D. | Methanol |
| Answer» A. Glycol | |
| 188. |
In aldehydes and ketones, carbon of carbonyl group is……….. |
| A. | 3 sp hybridised |
| B. | 2 sp hybridised |
| C. | sp hybridised |
| D. | Unhybridised |
| Answer» B. 2 sp hybridised | |
| 189. |
Aldehydes are isomeric with……….. |
| A. | Ketones |
| B. | Ethers |
| C. | Alcohols |
| D. | Fatty acids |
| Answer» A. Ketones | |
| 190. |
Which of the following compounds does not contain an -OH group……….. |
| A. | Phenol |
| B. | Carboxylic acid |
| C. | Aldehydes |
| D. | Alcohols |
| Answer» C. Aldehydes | |
| 191. |
IUPAC name of CH3COCH3 is……….. |
| A. | Acetone |
| B. | 2-propanone |
| C. | Dimethyl ketone |
| D. | Propanal |
| Answer» B. 2-propanone | |
| 192. |
Which of the following types of isomerism is shown by Pentanone. |
| A. | Chain isomerism |
| B. | Position isomerism |
| C. | Functional isomerism |
| D. | All of these |
| Answer» D. All of these | |
| 193. |
IUPAC name of CHO CCl3 is………….. |
| A. | Chloral |
| B. | Trichloro acetaldehyde |
| C. | 1, 1, 1-trichloroethanal |
| D. | 2, 2, 2-trichloroethanal |
| Answer» D. 2, 2, 2-trichloroethanal | |
| 194. |
Which of the following is a mixed ketone ……….. |
| A. | Pentanone |
| B. | Acetophenone |
| C. | Benzophenone |
| D. | Butanone |
| Answer» A. Pentanone | |
| 195. |
Chloral is……….. |
| A. | CCl3CHO |
| B. | CCl3COCCH3 |
| C. | CCl3COCCl3 |
| D. | CCl3CH2OH |
| Answer» C. CCl3COCCl3 | |
| 196. |
Carbonyl compounds are usually …………… |
| A. | Ethers, aldehydes, ketones and carboxylic acids |
| B. | Aldehydes, ketones and carboxylic acids |
| C. | Aldehydes and ketones |
| D. | Carboxylic acids |
| Answer» C. Aldehydes and ketones | |
| 197. |
Acetone and acetaldehyde are ………….. |
| A. | Position isomers |
| B. | Functional isomers |
| C. | Not isomers |
| D. | Chain isomers |
| Answer» C. Not isomers | |
| 198. |
Which of the aldehyde is most reactive ? |
| A. | C6H5CHO |
| B. | CH3CHO |
| C. | HCHO |
| D. | All the equally reactive |
| Answer» D. All the equally reactive | |
| 199. |
Acetophenone is prepared from |
| A. | Rosenmund reaction |
| B. | Sandmayer reaction |
| C. | Wurtz reaction |
| D. | Friedel craft reaction |
| Answer» D. Friedel craft reaction | |
| 200. |
Which one of the following compounds is prepared in the laboratory from benzene by a substitution reaction……… |
| A. | Glyoxal |
| B. | Cyclohexane |
| C. | Acetophenone |
| D. | Hexabromo cyclohexane |
| Answer» C. Acetophenone | |
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