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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.
| 201. |
Wax contains |
| A. | Ketone group |
| B. | Ester group |
| C. | Alcohol group |
| D. | Acid group |
| Answer» C. Alcohol group | |
| 202. |
Synthetic ethenol is produced by reacting ethene (in the presence of phosphoric acid) with |
| A. | Hydrogen |
| B. | Potassium dichromate |
| C. | Oxygen |
| D. | Water (steam) |
| Answer» E. | |
| 203. |
Hinsberg's reagent is |
| A. | Benzene suphonamide |
| B. | Benzene sulphonic acid |
| C. | Benzene sulphuryl chloride |
| D. | Benzene sulphonyl chloride |
| Answer» E. | |
| 204. |
Which one of the following petroleum refinery products has the lowest boiling point |
| A. | Kerosene |
| B. | Diesel |
| C. | Gasoline |
| D. | Lubricating oil |
| Answer» D. Lubricating oil | |
| 205. |
When ether is exposed in air for sometime, and explosive substance is produced, the substance is |
| A. | Peroxide |
| B. | TNT |
| C. | Oxide |
| D. | Superoxide |
| Answer» B. TNT | |
| 206. |
The hydrogen bond is strongest in which one of the following |
| A. | F - H --- F |
| B. | O - H ---- O |
| C. | S - H ---- F |
| D. | F - H ---- O |
| Answer» B. O - H ---- O | |
| 207. |
The factor adversely adversely affecting the fermentation process is |
| A. | Presence of air |
| B. | Low concentration of sugar |
| C. | High concentration of sugar |
| D. | Presence of an enzyme |
| Answer» D. Presence of an enzyme | |
| 208. |
Which of the following is produced by coaltar ? |
| A. | Drugs |
| B. | Synthetic dyes |
| C. | Perfumes |
| D. | (a), (b) & (c) All |
| Answer» E. | |
| 209. |
Rochelle's salt is |
| A. | Sodium potassium tartrate |
| B. | Sodium tartrate |
| C. | Potassium tartrate |
| D. | Calcium tartrate |
| Answer» B. Sodium tartrate | |
| 210. |
Vinegar contains |
| A. | 100% acetic acid |
| B. | 10-20% acetic acid |
| C. | 1% acetic acid |
| D. | 7-8% acetic acid |
| Answer» E. | |
| 211. |
The bond energy of C - C bond in Kcal / mol is |
| A. | 58 |
| B. | 83 |
| C. | 145 |
| D. | 192 |
| Answer» C. 145 | |
| 212. |
The most important ingredient of dynamite is |
| A. | Nitrobenzene |
| B. | Picric acid |
| C. | Nitroglycerine |
| D. | TNT |
| Answer» D. TNT | |
| 213. |
Match List-I with List-II and pick the correct matching form the codes given below |
| A. | A-2, B-4, C-5, D-3, E-1 |
| B. | A-2, B-5, C-1, D-4, E-3 |
| C. | A-3, B-4, C-2, D-1, E-5 |
| D. | A-1, B-3, C-5, D-2, E-4 |
| Answer» C. A-3, B-4, C-2, D-1, E-5 | |
| 214. |
Urotropine is formed by the action of ammonia on |
| A. | Acetaldehyde |
| B. | Formaldehyde |
| C. | Acetone |
| D. | Phenol |
| Answer» C. Acetone | |
| 215. |
Ether show isomerism with |
| A. | Alcohol |
| B. | Acid |
| C. | Halide |
| D. | Aldehyde |
| Answer» B. Acid | |
| 216. |
The process by which vegetable ghee is manufactured is known as |
| A. | Saponification |
| B. | Hydrogenation |
| C. | Esterification |
| D. | Hydrolysis |
| Answer» C. Esterification | |
| 217. |
IUPAC name of CH |
| A. | Acetaldehyde |
| B. | Ethanal |
| C. | Methyl aldehyde |
| D. | Formalin |
| Answer» C. Methyl aldehyde | |
| 218. |
The common name of propanone is |
| A. | Acetone |
| B. | Demethyl ketone |
| C. | Ethyl methyl ketone |
| D. | Diethyl ketone |
| Answer» C. Ethyl methyl ketone | |
| 219. |
The thermal decomposition of alkanes is known as |
| A. | Creacking |
| B. | Isomerisation |
| C. | Dehydration |
| D. | Reforming |
| Answer» B. Isomerisation | |
| 220. |
Octane number of a fuel can be increased by |
| A. | Isomerisation |
| B. | Alkylation |
| C. | Reforming |
| D. | All of these |
| Answer» E. | |
| 221. |
The compound CH |
| A. | Alkanals |
| B. | Alkanones |
| C. | Alkyle alkanoates |
| D. | Alkanediols |
| Answer» D. Alkanediols | |
| 222. |
Crown ethers are |
| A. | Cyclic ethers |
| B. | Ethers with several other functional groups |
| C. | Mixed groups |
| D. | Not ethers |
| Answer» B. Ethers with several other functional groups | |
| 223. |
In [18] - crown - 6, the number of oxygen atoms is |
| A. | 18 |
| B. | 6 |
| C. | 12 |
| D. | 24 |
| Answer» C. 12 | |
| 224. |
Octane number of gasoline can be increased by addition of BTX, BTX stands for |
| A. | Butane, tetraethyl lead and xylene |
| B. | Butane, tetramethyl lead and xylene |
| C. | Benzene, toluene and xylene |
| D. | Benzene, tetraethyl lead and xylene |
| Answer» D. Benzene, tetraethyl lead and xylene | |
| 225. |
Grain alcohol is common name of |
| A. | Amyl alcohol |
| B. | Ethyl alcohol |
| C. | Methanol |
| D. | None of these |
| Answer» C. Methanol | |
| 226. |
Which of the following compounds has been given an octane number of 100 ? |
| A. | n - Hexane |
| B. | Iso - octane |
| C. | Neo - pentane |
| D. | Neo - octane |
| Answer» C. Neo - pentane | |
| 227. |
Chloropicrin is |
| A. | Picric derivative |
| B. | Nitrochloroform |
| C. | Nitromethane |
| D. | Nitroethyl chloride |
| Answer» C. Nitromethane | |
| 228. |
Lassaigne's test is used for the detection of |
| A. | Carbon only |
| B. | Hydrogen only |
| C. | Oxygen only |
| D. | Nitrogen, sulphur and halogens |
| Answer» E. | |
| 229. |
Octane number is zero for |
| A. | Iso - heptane |
| B. | n - heptane |
| C. | Iso - octane |
| D. | n - octane |
| Answer» C. Iso - octane | |
| 230. |
A compound containing only carbon, hydrogen and oxygen, has a molecular weight of 44. On complete molecular weight 60. The original compound is |
| A. | An aldehyde |
| B. | An acid |
| C. | An alcohol |
| D. | An ether |
| Answer» B. An acid | |
| 231. |
Match List - I (Industrial process) with List - II (Industry with which associated) and select the correct answer using the code given below the lists |
| A. | A. |
| B. | B. |
| C. | C. |
| D. | D. |
| Answer» C. C. | |
| 232. |
What is the volume of oxygen required for the complete combustion of 4 litres of ethane |
| A. | 4 litre |
| B. | 8 litre |
| C. | 12 litre |
| D. | 14 litre |
| Answer» E. | |
| 233. |
Nitrogen molecule contains |
| A. | Two and one bonds |
| B. | Two and two bonds |
| C. | One and one bonds |
| D. | One and two bonds |
| Answer» E. | |
| 234. |
Glucose and fructose are converted into C |
| A. | Invertase |
| B. | Diastase |
| C. | Zymase |
| D. | Lipids |
| Answer» D. Lipids | |
| 235. |
The name fire damp is given to |
| A. | Methane |
| B. | Ethane |
| C. | Propane |
| D. | Butane |
| Answer» B. Ethane | |
| 236. |
p - nitrophenol and o - nitrophenol are separated by |
| A. | Crystallisation |
| B. | Fractional distillation |
| C. | Distillation |
| D. | Steam distillation |
| Answer» E. | |
| 237. |
Which of the following have high electron offinity ? |
| A. | CI |
| B. | F |
| C. | N |
| D. | O |
| Answer» B. F | |
| 238. |
Rectified spirit contains |
| A. | 75% alcohol |
| B. | 95.5% alcohol |
| C. | 56% alcohol |
| D. | 100% alcohol |
| Answer» C. 56% alcohol | |
| 239. |
Fisher - Tropsch process is used in the manufacture of |
| A. | Ethane |
| B. | Benzene |
| C. | Synthetic petrol |
| D. | LPG |
| Answer» D. LPG | |
| 240. |
The most reactive hydrocarbon is |
| A. | Ethene |
| B. | Ethyne |
| C. | Ethane |
| D. | Methane |
| Answer» B. Ethyne | |
| 241. |
The minimum number of carbon atoms which a ketone may contain is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 242. |
General formula C |
| A. | Alkenes |
| B. | Alkanes |
| C. | Alkynes |
| D. | None |
| Answer» D. None | |
| 243. |
How many chiral carbon atoms present in glucose molecule ? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» B. 3 | |
| 244. |
In the hydrogenation of oil |
| A. | Ni acts as a promoter |
| B. | Cu acts as a catalyst |
| C. | Tellurium acts as a promoter |
| D. | Ni acts as a catalyst |
| Answer» E. | |
| 245. |
Which has |
| A. | Fat |
| B. | Protein |
| C. | Carbohydrate |
| D. | Amino acid |
| Answer» B. Protein | |
| 246. |
In which type of coal percentage of |
| A. | Peat |
| B. | Lignite |
| C. | Bituminous |
| D. | Anthracite |
| Answer» E. | |
| 247. |
Oils are purified |
| A. | Fractional distillation |
| B. | Steam distillation |
| C. | Crystallisation |
| D. | Vacuum distillation |
| Answer» C. Crystallisation | |
| 248. |
Kerosene |
| A. | aromatic hydrocarbons |
| B. | aliphatic hydrocarbons |
| C. | saturated hydrocarbons |
| D. | alicyclic hydrocarbons |
| Answer» C. saturated hydrocarbons | |
| 249. |
Candles |
| A. | Bees wax and paraffin wax |
| B. | Bees wax and stearic acid |
| C. | Paraffin wax and stearic acid |
| D. | Higher fatty acid |
| Answer» D. Higher fatty acid | |
| 250. |
C11 - L - methyl-methionine |
| A. | brain tumor and parathyroid imaging |
| B. | stomach analysis |
| C. | bone imaging |
| D. | live imaging |
| Answer» B. stomach analysis | |