MCQOPTIONS
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MCQOPTIONS
This section includes 252 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Liquor poisoning id due to the presence of |
| A. | Methyl alcohol |
| B. | Ethyl alcohol |
| C. | Carbonic acid |
| D. | Bad compound in liquor |
| Answer» B. Ethyl alcohol | |
| 152. |
An enzyme which changes maltose into glucose is known as |
| A. | Zymase |
| B. | Maltose |
| C. | Invertase |
| D. | Diastase |
| Answer» C. Invertase | |
| 153. |
At room temperature, formaldehyde is |
| A. | A gas |
| B. | A liquid |
| C. | A solid |
| D. | Not known |
| Answer» B. A liquid | |
| 154. |
Fermentation of ethyl alcohol into acetic acid is done by |
| A. | Zymase |
| B. | Diastase |
| C. | Maltase |
| D. | Bacterium mycoderma aceti |
| Answer» E. | |
| 155. |
Epichlorohydrin is |
| A. | 3 - chloropropane |
| B. | 3 - chloropropan - 1 - o1 |
| C. | 2 - chloromethyloxirane |
| D. | None of these |
| Answer» D. None of these | |
| 156. |
Maximum hydrogen bonding would be observed in the compound |
| A. | Methanol |
| B. | Glycol |
| C. | Diethylamine |
| D. | Diethyl ether |
| Answer» B. Glycol | |
| 157. |
When formic acid reacts PCI |
| A. | Acetyl chloride |
| B. | Formyl chloride |
| C. | Methyl chloride |
| D. | Propionyl chloride |
| Answer» C. Methyl chloride | |
| 158. |
The compound with the highest boiling point is |
| A. | n - pentane |
| B. | 2 - methylbutane |
| C. | n - hexane |
| D. | 2, 2 - dimethylpropane |
| Answer» D. 2, 2 - dimethylpropane | |
| 159. |
Liquid benzene (C |
| A. | 11.2 litre |
| B. | 22.4 litre |
| C. | 84 litre |
| D. | 74 litre |
| Answer» D. 74 litre | |
| 160. |
When water vapours are passed over aluminium carbide, we get |
| A. | Acetaldehyde |
| B. | Ethylene |
| C. | Methane |
| D. | Methyl alcohol |
| Answer» D. Methyl alcohol | |
| 161. |
Chiral molecules are those which are |
| A. | Superimposable on their mirror image |
| B. | Not superimposable on their mirror image |
| C. | Unstable molecules |
| D. | Capable of showing geometrical isomerism |
| Answer» C. Unstable molecules | |
| 162. |
Glucose has how many optical isomers ? |
| A. | 8 |
| B. | 12 |
| C. | 16 |
| D. | Cannot be predicted |
| Answer» D. Cannot be predicted | |
| 163. |
What is the name of the following alkyl group ? (CH |
| A. | Normal propyl |
| B. | Isopropyl |
| C. | Sec. propyl |
| D. | Tert. propyl |
| Answer» C. Sec. propyl | |
| 164. |
Which of the following compounds does not contains an - OH group ? |
| A. | Alcohol |
| B. | Carboxylic acid |
| C. | Aldehyde |
| D. | Phenol |
| Answer» D. Phenol | |
| 165. |
Strongest bond is |
| A. | C - C |
| B. | C = C |
| C. | C C |
| D. | All are same |
| Answer» D. All are same | |
| 166. |
Lemon is sour due to |
| A. | Citric acid |
| B. | Tararic acid |
| C. | Oxalic acid |
| D. | Acetic acid |
| Answer» B. Tararic acid | |
| 167. |
The presence of unsaturation in an organic compound can be tested with |
| A. | Schiff's reagent |
| B. | Tollen's reagent |
| C. | Fehling's reagent |
| D. | Baeyer's reagent |
| Answer» E. | |
| 168. |
Reason for excessive solubility of ethyl alcohol in water is due to |
| A. | Covalent bonding |
| B. | Ionic bonding |
| C. | Hydrogen bonding with water |
| D. | None of the above |
| Answer» D. None of the above | |
| 169. |
The name of citric acid is |
| A. | 2 - hydroxy propane - 1, 2, 3 tricarboxylic acid |
| B. | 3 - carboxy - 3 - hydroxy pentane - 1, 5 dioic acid |
| C. | Both (a) and (b) are correct |
| D. | Both (a) and (b) are wrong |
| Answer» D. Both (a) and (b) are wrong | |
| 170. |
The name CH |
| A. | Methyl nitrile |
| B. | Ethane nitrile |
| C. | Cyno ethane |
| D. | None of these |
| Answer» C. Cyno ethane | |
| 171. |
The first organic compound synthesised in the laboratory from its element |
| A. | Urea |
| B. | Methane |
| C. | Ethylene |
| D. | Acetic acid |
| Answer» B. Methane | |
| 172. |
Adam's catalyst is |
| A. | Platinum metal |
| B. | Palladium |
| C. | Nickel metal |
| D. | PtO |
| E. | <sub>2</sub> |
| Answer» E. <sub>2</sub> | |
| 173. |
Catalytic reduction of water gas gives |
| A. | Acetylene |
| B. | Ethylene |
| C. | Ethane |
| D. | Methane |
| Answer» E. | |
| 174. |
Paraffin dissolves in |
| A. | Distilled water |
| B. | Methanol |
| C. | Benzene |
| D. | Salt water |
| Answer» D. Salt water | |
| 175. |
Liquid hydrocarbon is converted into a mixture of gaseous hydrocarbon by |
| A. | Cracking |
| B. | Hydrolysis |
| C. | Oxidation |
| D. | Distillation |
| Answer» B. Hydrolysis | |
| 176. |
Power alcohol is |
| A. | Absolute alcohol + Methyl alcohol |
| B. | Absoluted alcohol + Petrol |
| C. | Rectified alcohol + Petrol |
| D. | Denatured alcohol + Petrol |
| Answer» C. Rectified alcohol + Petrol | |
| 177. |
Which of the following compounds caused tragedy of Bhopal in 1984 ? |
| A. | Phosphene |
| B. | Methyl isocynate |
| C. | Carbon monoxide |
| D. | Methyl cyanate |
| Answer» C. Carbon monoxide | |
| 178. |
A plastic bakelite is a compound of HCHO with |
| A. | Benzene |
| B. | Phenol |
| C. | Ammonia |
| D. | Hydrocarbon |
| Answer» C. Ammonia | |
| 179. |
The frouping > CO is present in |
| A. | Ethers |
| B. | Alcohols |
| C. | Ketones |
| D. | None of these |
| Answer» D. None of these | |
| 180. |
Match List-I (Fuel gases) with List-II (Major constituents) and select the correct answers using the codes given below the list |
| A. | A. |
| B. | B. |
| C. | C. |
| D. | D. |
| Answer» C. C. | |
| 181. |
A sample of chloroform before using as an anaesthetic, is tested by |
| A. | Fehling's solution |
| B. | Ammonical cuprous chloride |
| C. | Ammonical silver nitrate solution |
| D. | Silver nitrate solution after boiling with alcoholic KOH |
| Answer» D. Silver nitrate solution after boiling with alcoholic KOH | |
| 182. |
Number of pi electrons present in naphthalene is |
| A. | 4 |
| B. | 6 |
| C. | 10 |
| D. | 14 |
| Answer» D. 14 | |
| 183. |
All bonds in benzene are equal due to |
| A. | Isomerism |
| B. | Tautomerism |
| C. | Inductive effect |
| D. | Resonance |
| Answer» E. | |
| 184. |
Petrol/gasoline is a mixture of |
| A. | Alcohol |
| B. | Carbohydrates |
| C. | Hydrocarbons |
| D. | None of these |
| Answer» D. None of these | |
| 185. |
The explosive nitroglycerine is |
| A. | An ester |
| B. | A salt |
| C. | A soap |
| D. | A complex compound |
| Answer» B. A salt | |
| 186. |
The vapour density of a volatile substance is 4 (CH |
| A. | 2 |
| B. | 8 |
| C. | 64 |
| D. | 128 |
| Answer» E. | |
| 187. |
Pyroligneous acid contains |
| A. | 2% acetic acid |
| B. | 50% acetic acid |
| C. | 10% acetic acid |
| D. | 20% acetic acid |
| Answer» D. 20% acetic acid | |
| 188. |
Most of hydrocarbons from petroleum are obtained by |
| A. | Fractional distillation |
| B. | Fractional crystallisation |
| C. | Vaporisation |
| D. | Isomerisation |
| Answer» B. Fractional crystallisation | |
| 189. |
Ethylene reacts with sulphur monochloride to form |
| A. | Ethyl chloride |
| B. | Ethylene chloride |
| C. | Mustared gas |
| D. | Ethylidene chloride |
| Answer» D. Ethylidene chloride | |
| 190. |
Acetone is mixed with bleaching powder to give |
| A. | Chlorogorm |
| B. | Acetaldehyde |
| C. | Ethanol |
| D. | Phosgene |
| Answer» B. Acetaldehyde | |
| 191. |
Molecule in which the distance between two adjacent carbon atoms is longest in |
| A. | Ethane |
| B. | Ethene |
| C. | Ethyne |
| D. | Benzene |
| Answer» B. Ethene | |
| 192. |
In benzene molecule there are 3 pi bonds and |
| A. | 3 sigma bonds |
| B. | 6 sigma bonds |
| C. | 10 sigma bonds |
| D. | 12 sigma bonds |
| Answer» E. | |
| 193. |
Vital force theory was put forwarded by |
| A. | Berzelius |
| B. | Wholer |
| C. | Grignard |
| D. | Kolbe |
| Answer» B. Wholer | |
| 194. |
The scientist who was responsible for the rejection of vital force theory |
| A. | Berzelius |
| B. | Wohler |
| C. | Avogadro |
| D. | Laboisier |
| Answer» C. Avogadro | |
| 195. |
In methane molecule the four hydrogen atoms are arranged as |
| A. | Square planar |
| B. | Square pyramid |
| C. | Tetrahedral |
| D. | Octahedral |
| Answer» D. Octahedral | |
| 196. |
The group reagent for the test of alcohols is |
| A. | Ceric ammonium nitrate |
| B. | Schiff's reagent |
| C. | Molisch's reagent |
| D. | Bromine water |
| Answer» B. Schiff's reagent | |
| 197. |
Bees wax is |
| A. | Myricyl palmitate |
| B. | Myricyl stearate |
| C. | Myricyl oleate |
| D. | Mixture of higher hydrocarbon |
| Answer» B. Myricyl stearate | |
| 198. |
The isomerism observed in alkanes is |
| A. | Metamerism |
| B. | Chain isomerism |
| C. | Position isomerism |
| D. | Geometrical isomerism |
| Answer» C. Position isomerism | |
| 199. |
An isomer of ethanol is |
| A. | Methanol |
| B. | Acetone |
| C. | Diethyl ether |
| D. | Dimethyl ether |
| Answer» E. | |
| 200. |
Tetrahedral nature of bonding in carbon atom was first shown by |
| A. | Kekule |
| B. | Lewis |
| C. | Kolbe |
| D. | van't Hoff and Le-Bel |
| Answer» E. | |