MCQOPTIONS
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MCQOPTIONS
This section includes 1184 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Which of the following do not give aldol condensation reactions ? |
| A. | formaldehyde |
| B. | acetaldehyde |
| C. | diemthyl ketone |
| D. | propionaldehyde |
| Answer» B. acetaldehyde | |
| 202. |
Which of the following compounds will react with Tollens reagent ? |
| A. | CH3-CHO |
| B. | CH3-CH-CH3 |
| C. | CH3-COOH |
| D. | CH3-CO-CH2-CH3 |
| Answer» B. CH3-CH-CH3 | |
| 203. |
Which of the following compounds is not soluble in HNO3___? |
| A. | CuS |
| B. | CdS |
| C. | PbS |
| D. | AgCl |
| Answer» E. | |
| 204. |
Which of the following compounds has the empirical formula CH2O and reacts with sodium hydroxide ? |
| A. | carbonic acid |
| B. | ethanol |
| C. | acetic acid |
| D. | methanoic acid |
| Answer» D. methanoic acid | |
| 205. |
Which of the following cell is not rechargeable ? |
| A. | Lead storage battery |
| B. | Silver oxide cell |
| C. | Fuel cell |
| D. | Ni-Cd cell |
| Answer» C. Fuel cell | |
| 206. |
Which of the following cannot exist in solution_________________? |
| A. | O-2 |
| B. | H+ |
| C. | Cl- |
| D. | Na+ |
| Answer» B. H+ | |
| 207. |
Which of the following can form a chealate______________________? |
| A. | ammine |
| B. | oxalato |
| C. | carbonyl |
| D. | cyano |
| Answer» C. carbonyl | |
| 208. |
Which of the following can be used in laptops ? |
| A. | Silver oxide battery |
| B. | Fuel cell |
| C. | Nickel cadmium cell |
| D. | Lead accumulator |
| Answer» D. Lead accumulator | |
| 209. |
Which of the following can be used as anti-knocking agent ? |
| A. | PbCl2 |
| B. | (C2H5)4 Pb |
| C. | (C2H5)2 Pb |
| D. | all of the above |
| Answer» C. (C2H5)2 Pb | |
| 210. |
Which of the following are the conditions of colligative properties_______________? |
| A. | Non-electrolye solute |
| B. | Non-volatile solute |
| C. | Dilute solution |
| D. | All of the above |
| Answer» E. | |
| 211. |
Which of the following are isoelectronic species ? |
| A. | H+ H H- |
| B. | Li+ Na+ K+ |
| C. | C1- Br- I |
| D. | F- Ne Na+ |
| Answer» E. | |
| 212. |
Which of the following aqueous solutions would have the highest boiling point? |
| A. | 0.20 m glucose |
| B. | 0.20 m NaCl |
| C. | 0.15 m CaCl2 |
| D. | 0.25 m sucrose |
| Answer» D. 0.25 m sucrose | |
| 213. |
Which of the following always increases on going from top to bottom in a group ? |
| A. | Metallic character |
| B. | Electronegativity |
| C. | Oxidizing power |
| D. | Tendency to get reduced |
| Answer» B. Electronegativity | |
| 214. |
Which of the following alloys contain(s) Cu and Zn? |
| A. | Bronze |
| B. | Brass |
| C. | Gun-metal |
| D. | Type metal |
| Answer» C. Gun-metal | |
| 215. |
Which of the following aldehydes shows rapid reaction with sodium nitroprusside ? |
| A. | formaldehyde |
| B. | accetaldehyde |
| C. | benzaldehyde |
| D. | acetone |
| Answer» E. | |
| 216. |
Which of the following air pollutants is more dangerous for ozone layer ? |
| A. | CFC |
| B. | CO2 |
| C. | CO |
| D. | Oxides of nitrogen |
| Answer» B. CO2 | |
| 217. |
Which of the elements show passivity when treated with conc. HNO3? |
| A. | Fe |
| B. | A |
| C. | Cr |
| D. | All of the above |
| Answer» E. | |
| 218. |
Which of the elements do not fall in stair case of the modern periodic table__________________? |
| A. | Si |
| B. | As |
| C. | Te |
| D. | None of the above |
| Answer» E. | |
| 219. |
Which of following metals can be displaced by all other metals from its solution ? |
| A. | Ag |
| B. | A |
| C. | Au |
| D. | Cu |
| Answer» D. Cu | |
| 220. |
Which of following is not a base______________? |
| A. | KOH |
| B. | NH3 |
| C. | PH3 |
| D. | BF3 |
| Answer» E. | |
| 221. |
Which molecule has the highest bond energy among the halogens_________________? |
| A. | Fluorine |
| B. | Chlorine |
| C. | Iodine |
| D. | Bromine |
| Answer» C. Iodine | |
| 222. |
Which metal is used as a reducing agent in Smelting______? |
| A. | C |
| B. | Zn |
| C. | Al |
| D. | Cu |
| Answer» B. Zn | |
| 223. |
Which law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature? |
| A. | Charles’ Law |
| B. | Avogadro’s Law |
| C. | Graham’s Law |
| D. | Boyle’s law |
| Answer» B. Avogadro’s Law | |
| 224. |
Which law states that the rate of the effusion of a gas is inversely proportional to the square root of its density? |
| A. | Graham’s Law |
| B. | Gay-Lussac’s law |
| C. | Boyle’s law |
| D. | None of these |
| Answer» B. Gay-Lussac’s law | |
| 225. |
Which law states that “equal volumes of all gases, at the same temperature and pressure, have the same number of molecules? |
| A. | Boyle’s law |
| B. | Charles’ law |
| C. | Gay-Lussac’s law |
| D. | Avogadro’s law |
| Answer» E. | |
| 226. |
Which is used for artificial ripening of fruit ? |
| A. | ethane |
| B. | ethene |
| C. | ethyne |
| D. | methane |
| Answer» C. ethyne | |
| 227. |
Which is true about Zn-Cu galvanic cell ? |
| A. | Reduction occurs at anode |
| B. | K+ ion transfer from salt bridge to left beaker of ZnSO4 |
| C. | Oxidation occurs at cathode |
| D. | Anode is negatively charged |
| Answer» E. | |
| 228. |
Which is the unit of (K) rate constant for zero order reaction ? |
| A. | s-1 |
| B. | mol dm-3 s-1 |
| C. | mol-1 dm3 s-1 |
| D. | mol-2 dm6 s-1 |
| Answer» C. mol-1 dm3 s-1 | |
| 229. |
Which is the strongest acid ? |
| A. | HCIO |
| B. | HCIO2 |
| C. | HCIO3 |
| D. | HCIO4 |
| Answer» E. | |
| 230. |
Which is the paramagnetic oxide of chlorine ? |
| A. | Cl2O7 |
| B. | Cl2O6 |
| C. | ClO2 |
| D. | all |
| Answer» D. all | |
| 231. |
Which is sold as fertilizer ___________________? |
| A. | CaSiO3 |
| B. | Na2SiO3 |
| C. | Ca3(PO4)2 |
| D. | MnSiO3 |
| Answer» D. MnSiO3 | |
| 232. |
Which is not related pair of term used in analytical techniques________________? |
| A. | Filtrate residue |
| B. | Sublimate sublimation |
| C. | Drying desiccator |
| D. | Separating funnel mother liquor |
| Answer» C. Drying desiccator | |
| 233. |
Which is not heterocyclic compound _______________? |
| A. | Furan |
| B. | Thiophene |
| C. | Aniline |
| D. | Pyridine |
| Answer» D. Pyridine | |
| 234. |
Which is not a sublime material_______________? |
| A. | Iodine |
| B. | Benzoic acid |
| C. | Ammonium chloride |
| D. | Potash alum |
| Answer» E. | |
| 235. |
Which is methyl cyanide_________________? |
| A. | CH3NH2 |
| B. | CH3NO2 |
| C. | CH3CN |
| D. | CH2 = CH – CN |
| Answer» D. CH2 = CH – CN | |
| 236. |
Which is fused cyclic aromatic compound _____________________? |
| A. | diphenyl amine |
| B. | diphenyl methane |
| C. | naphthalene |
| D. | biphenyl |
| Answer» D. biphenyl | |
| 237. |
Which is carnalite________________? |
| A. | KCI |
| B. | NaCI |
| C. | KCI MgCl2 6H2O |
| D. | Na2CO3. 10H2O |
| Answer» D. Na2CO3. 10H2O | |
| 238. |
Which is artificial manmade fiber? |
| A. | Boron |
| B. | Saffron |
| C. | Rayon |
| D. | None of these |
| Answer» D. None of these | |
| 239. |
Which ion will have maximum value of heat of hydration ? |
| A. | A1+3 |
| B. | Cs+ |
| C. | Ba+ |
| D. | Mg+2 |
| Answer» B. Cs+ | |
| 240. |
Which has the minimum freezing point ? |
| A. | One Molal NaCI |
| B. | One molal KCI solution |
| C. | One molal CaCI2 |
| D. | One molal urea solution |
| Answer» D. One molal urea solution | |
| 241. |
Which has strongest bonding in the solid state ? |
| A. | Hydrogen Chloride (HCI) |
| B. | Chlorine (Cl2) |
| C. | Xenon(Xe) |
| D. | Sodium Chloride (NaCI) |
| Answer» E. | |
| 242. |
Which has maximum oxidation number ? |
| A. | N |
| B. | Cr |
| C. | S |
| D. | Mn |
| Answer» E. | |
| 243. |
Which group contains elements that exist as monoatomic molecule? |
| A. | 1 |
| B. | 2 |
| C. | 14 |
| D. | 18 |
| Answer» E. | |
| 244. |
Which element was not known when Mendeleev proposed his classification ? |
| A. | Hydrogen |
| B. | Sodium |
| C. | Copper |
| D. | Germanium |
| Answer» E. | |
| 245. |
Which element is necessary for normal leaf development ? |
| A. | Si |
| B. | Ba |
| C. | Mg |
| D. | Ca |
| Answer» E. | |
| 246. |
Which electronic configuration corresponds to an element of group IIIA ? |
| A. | 1s2 2s2 2p3 |
| B. | 1s2 2s2 2p6 3s2 3p1 |
| C. | 1s2 2s2 2p4 |
| D. | 1s2 2s2 2p6 3s2 3p6 4s2 3d1 |
| Answer» C. 1s2 2s2 2p4 | |
| 247. |
Which element can form tripositive ion ? |
| A. | Beryllium |
| B. | Carbon |
| C. | Silicon |
| D. | Aluminium |
| Answer» E. | |
| 248. |
Which element has same isotopes like palladium___________________? |
| A. | Nickel |
| B. | Calcium |
| C. | Cadmium |
| D. | Tin |
| Answer» C. Cadmium | |
| 249. |
Which discovery caused a revision in the periodic law as stated by Mendeleev ? |
| A. | Location of nucleus by Rutherford |
| B. | Atomic number by Moseley |
| C. | X-rays by Roentgen |
| D. | Natural radioactivity by Henry Bacquerel. |
| Answer» C. X-rays by Roentgen | |
| 250. |
Which compound will readily undergo sulphonation ? |
| A. | Benzene |
| B. | Nitro benzene |
| C. | Toluene |
| D. | Chlorobenzene |
| Answer» D. Chlorobenzene | |