MCQOPTIONS
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MCQOPTIONS
This section includes 1262 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1151. |
A theoretical link between quantum mechanics and thermodynamics is_________? |
| A. | Electrchemistry |
| B. | Matrix mechanics |
| C. | Statistical thermodynamics |
| D. | Soectroscopic analysis |
| Answer» D. Soectroscopic analysis | |
| 1152. |
Which of the following statements is false about transition metals? |
| A. | They form complexes |
| B. | They show variable valency |
| C. | All transition metal compounds are paramagnetic |
| D. | They form coloured ions |
| Answer» D. They form coloured ions | |
| 1153. |
Colour in transition metal compounds is attributed to____________? |
| A. | Small sized metal ions |
| B. | Absorption of light in UV region |
| C. | Complete ns sub-shell |
| D. | Incomplete (n-1) d sub-shell |
| Answer» E. | |
| 1154. |
The maximum oxidation shown by manages is_________? |
| A. | +2 |
| B. | +4 |
| C. | +5 |
| D. | +7 |
| Answer» E. | |
| 1155. |
The carbon-carbon bond strength is maximum in__________? |
| A. | CH3CH3 |
| B. | CH2=CH2 |
| C. | Benzene |
| D. | Cyclohexane |
| Answer» B. CH2=CH2 | |
| 1156. |
The compound (CH3)3COH according to IUPAC is known as ___________? |
| A. | Tert-Butanol |
| B. | 2,2-Dimethyl-propanol |
| C. | Tert Alcohol |
| D. | 1,1- Diethylethanol |
| Answer» C. Tert Alcohol | |
| 1157. |
Which one of the following is caustic potash? |
| A. | NaOH |
| B. | KOH |
| C. | NaCl |
| D. | NaBH4 |
| Answer» C. NaCl | |
| 1158. |
The mass of 3.2 moles of ammonia (NH3) gas? |
| A. | 53.4 grams |
| B. | 54.4 grams |
| C. | 55.4 grams |
| D. | 56.4 grams |
| Answer» C. 55.4 grams | |
| 1159. |
Which of the following effects best explains that o-nitrophenol is insoluble in water? |
| A. | Inductive effect |
| B. | Resonance effect |
| C. | Intermolecular H-bonding |
| D. | Isomeric effect |
| Answer» D. Isomeric effect | |
| 1160. |
Grignard reagent gives carboxylic acid with____________? |
| A. | CO2 |
| B. | CH3CHO |
| C. | COC2 |
| D. | HCN |
| Answer» B. CH3CHO | |
| 1161. |
The criteria for aromaticity is presence of_________? |
| A. | Unsaturations |
| B. | Cyclic structure |
| C. | Presence of 4nπ electrons |
| D. | Presence of 4n+2π electrons |
| Answer» E. | |
| 1162. |
The PH of the 0.0032 M H2SO4 is__________? |
| A. | 3.2 |
| B. | 4.0 |
| C. | 2.198 |
| D. | 1.0 |
| Answer» B. 4.0 | |
| 1163. |
Electric bulb filament is made of__________? |
| A. | Copper |
| B. | Aluminum |
| C. | Lead |
| D. | Tungsten |
| Answer» E. | |
| 1164. |
When 0.01 moles of NaOH are added to a buffer solution, its PH changes from 4.745 to 4.832. What is its? |
| A. | 0.115 |
| B. | 0.900 |
| C. | 0.015 |
| D. | 0.215 |
| Answer» B. 0.900 | |
| 1165. |
Alpha particles can be detected by using___________? |
| A. | Gold foils |
| B. | Barium sulphate |
| C. | Zinc sulphide screen |
| D. | Thin Aluminium sheet |
| Answer» D. Thin Aluminium sheet | |
| 1166. |
Which one of the following is the correct sequence according to atomic weights? |
| A. | Fe>Co> Ni |
| B. | Co > Ni > Fe |
| C. | Ni> Co> Fe |
| D. | Co >Fe>Ni |
| Answer» C. Ni> Co> Fe | |
| 1167. |
Generally the limit of visible spectrum is__________? |
| A. | 1000 to 300 A° |
| B. | 3800 to 7600 A° |
| C. | 8000 to 10,000 A° |
| D. | 12,000 to 15,000 A° |
| Answer» C. 8000 to 10,000 A° | |
| 1168. |
Magnetic quantum number specifies___________? |
| A. | Size of orbitals |
| B. | Shape of orbitals |
| C. | Orientation of orbitals |
| D. | All of the above |
| Answer» D. All of the above | |
| 1169. |
Hydrocarbon is formed when Grignard reagent is treated with___________? |
| A. | H2O |
| B. | CH3OH |
| C. | Both a and b |
| D. | None of the above |
| Answer» B. CH3OH | |
| 1170. |
The density of a gas is 1.964 g dm-3 at 273 K and 76 cm Hg. The gas is _________? |
| A. | CH4 |
| B. | CO2 |
| C. | C2H4 |
| D. | Xe |
| Answer» C. C2H4 | |
| 1171. |
Which of the following haloalkane is hydrolysed by SN1 mechanism? |
| A. | CH3Br |
| B. | CH3CH2Br |
| C. | CH3CH2CH2Br |
| D. | (CH3)3CBr |
| Answer» E. | |
| 1172. |
The most commonly used bleaching agent is_________? |
| A. | alcohol |
| B. | carbon dioxide |
| C. | chlorine |
| D. | sodium chlorine |
| Answer» D. sodium chlorine | |
| 1173. |
Electronic Configuration of Calcium (Ca) atom may be written as________? |
| A. | Ne, 4p2 |
| B. | Ar, 4s2 |
| C. | Ne, 4s2 |
| D. | Kr,4p2 |
| Answer» C. Ne, 4s2 | |
| 1174. |
The law of traids is applicable to__________? |
| A. | Li, Be, B |
| B. | F, Cl, Br |
| C. | Cl, Br, I |
| D. | Na, K, Rb |
| Answer» D. Na, K, Rb | |
| 1175. |
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of____________? |
| A. | p-electrons in Ne(Z = 10) |
| B. | s-electrons in Mg(Z = 12) |
| C. | d-electrons in Fe(Z = 26) |
| D. | p-electrons in CI(Z = 17) |
| Answer» E. | |
| 1176. |
The metallurgical process in which a metal is obtained in a fused state is called__________? |
| A. | smelting |
| B. | roasting |
| C. | calcinations |
| D. | froth floatation |
| Answer» B. roasting | |
| 1177. |
The heat energy produced when the human body metabolises 1 gram of fat is__________? |
| A. | 30 KJ |
| B. | 1 KJ |
| C. | 39 KJ |
| D. | 29 KJ |
| Answer» D. 29 KJ | |
| 1178. |
The octane number of zero is assigned to____________? |
| A. | 2-methyl octane |
| B. | n-heptane |
| C. | iso-octane |
| D. | 3-methyl octane |
| Answer» C. iso-octane | |
| 1179. |
The Latin word formica means ant. The name formic acid is derived from this Latin word because__________? |
| A. | this acid, in ancient times, was used to eliminate ant-hills |
| B. | this corrosive acid is secreted by ants to drive away their enemies |
| C. | this acid was first obtained by the distillation of ants |
| D. | ants are attracted by the odour of this acid |
| Answer» D. ants are attracted by the odour of this acid | |
| 1180. |
The heat required to raise the temperature of body by 1 K is called___________? |
| A. | specific heat |
| B. | thermal capacity |
| C. | water equivalent |
| D. | None of the above |
| Answer» C. water equivalent | |
| 1181. |
Which of the following element has the maximum electron affinity_____? |
| A. | Cl |
| B. | Br |
| C. | I |
| D. | F |
| Answer» B. Br | |
| 1182. |
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is___________? |
| A. | 2.05 gram |
| B. | 3.05 gram |
| C. | 4.05 gram |
| D. | 5.05 gram |
| Answer» C. 4.05 gram | |
| 1183. |
In a molecule of carbon monoxide, what are the formal charges on the two atoms? |
| A. | Carbon=0, Oxygen=0 |
| B. | Carbon= +1, Oxygen= -1 |
| C. | Carbon= -1, Oxygen= +1 |
| D. | Carbon=0, Oxygen= -1 |
| Answer» D. Carbon=0, Oxygen= -1 | |
| 1184. |
A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula? |
| A. | C2H6O |
| B. | C6H18O3 |
| C. | C6H12O6 |
| D. | C2H5O |
| Answer» C. C6H12O6 | |
| 1185. |
The purpose of Smelting an ore is to________? |
| A. | Reduce it |
| B. | Oxidize it |
| C. | Obtain an alloy |
| D. | Separate volatile impurities |
| Answer» B. Oxidize it | |
| 1186. |
Argon gas was discovered by_______? |
| A. | Rayleigh |
| B. | Ramsay |
| C. | Lockerey |
| D. | Dalton |
| Answer» C. Lockerey | |
| 1187. |
Tetraethyl lead is used as______? |
| A. | Pain Killer |
| B. | Fire Extinguisher |
| C. | Mosquito Repellent |
| D. | Petrol Additive |
| Answer» E. | |
| 1188. |
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 | |
| 1189. |
SO2 reacts with Cl in sunlight to form__________? |
| A. | Sulphur dioxide |
| B. | Sulphuryl chloride |
| C. | Suphanyl chloride |
| D. | All of the above |
| Answer» C. Suphanyl chloride | |
| 1190. |
Oxidation state +1 for phosphorous is found in___________? |
| A. | H3PO3 |
| B. | H3PO4 |
| C. | H3PO2 |
| D. | H2P2O7 |
| Answer» D. H2P2O7 | |
| 1191. |
Which Oxide of Manganese is amphoteric? |
| A. | MnO2 |
| B. | Mn2O3 |
| C. | Mn2O7 |
| D. | MnO |
| Answer» B. Mn2O3 | |
| 1192. |
The volume strength of 1.5 N H2O2 solution is_______? |
| A. | 4.8 |
| B. | 5.2 |
| C. | 8.8 |
| D. | 8.4 |
| Answer» E. | |
| 1193. |
Which metal is used as a reducing agent in Smelting______? |
| A. | C |
| B. | Zn |
| C. | Al |
| D. | Cu |
| Answer» B. Zn | |
| 1194. |
A process used for the Concentration of Ore is________? |
| A. | Roasting |
| B. | Forth flotation |
| C. | Electrolysis |
| D. | Distillation |
| Answer» C. Electrolysis | |
| 1195. |
A brivalent metal has the equivalent weighr of 12. The molecular weight to its oxide will be_______? |
| A. | 24 |
| B. | 32 |
| C. | 36 |
| D. | 40 |
| Answer» E. | |
| 1196. |
The structure of H2O2 is_______? |
| A. | Planar |
| B. | Non- polar |
| C. | Spherical |
| D. | Linear |
| Answer» C. Spherical | |
| 1197. |
A 10 volume solution of H2O2 means_______? |
| A. | 10 grams of H2O2 solution liberate 10 mL of O2 at STO |
| B. | 10 gram equivalents of H2O2 liberates 10 mL of O2 at STP |
| C. | 10 litres of H2O2 liberates 19 mL of O2 at STP |
| D. | 1mL of solution of H2O2 liberates 10 mL of O2 at STP |
| Answer» E. | |
| 1198. |
For the reaction 2HI ____________> H2+ I2 |
| A. | Kp > kc |
| B. | Kc > kp |
| C. | Kp= kc |
| D. | Kp ≤ kc |
| Answer» D. Kp ≤ kc | |
| 1199. |
Molecular orbital Theory is also called_________? |
| A. | Bonding theory |
| B. | Band theory |
| C. | Antibondingtheory |
| D. | π and σ bonding theory |
| Answer» D. π and σ bonding theory | |
| 1200. |
Ethylene diammine is ligand________? |
| A. | mono dentate |
| B. | Bi dentate |
| C. | tri dentate |
| D. | Poly dentate |
| Answer» C. tri dentate | |