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.
| 1151. |
A solution has pH = 0 its H+ ion concentration is__________________? |
| A. | 1 x 10-1 |
| B. | 1 x 10-14 |
| C. | 1 x 10-7 |
| D. | 1 |
| Answer» E. | |
| 1152. |
A solution can be both____________________? |
| A. | dilute and concentrated |
| B. | dilute and saturated |
| C. | saturated and unsaturated |
| D. | saturated and super saturated |
| Answer» B. dilute and saturated | |
| 1153. |
A solid may be made up of_________________? |
| A. | Atoms |
| B. | Ions |
| C. | Molecules |
| D. | A, B, and C |
| Answer» E. | |
| 1154. |
A single chlorine free radical can destroy how many ozone molecules ? |
| A. | 10 |
| B. | 100 |
| C. | 10000 |
| D. | 100000 |
| Answer» E. | |
| 1155. |
A single atom or group of atoms which gives characteristic properties to a compound is called_________________? |
| A. | radical |
| B. | hydrocarbon |
| C. | functional group |
| D. | ion |
| Answer» D. ion | |
| 1156. |
A scale which used to measure the Hydrogen Ion concentration in a solution is known as__________? |
| A. | Thermometer |
| B. | Viscometer |
| C. | PH Scale |
| D. | Stagmometer |
| Answer» D. Stagmometer | |
| 1157. |
A safe and more reliable method for drying the crystal is__________________? |
| A. | Hot air currents |
| B. | folds of filter paper |
| C. | oven |
| D. | Vacuum desiccator |
| Answer» E. | |
| 1158. |
A real gas obeying vander waals equation will resemble the ideal gas if_______________________? |
| A. | Both a and b are small |
| B. | Both a and b are large |
| C. | a is small and b is large |
| D. | a is large and b is small |
| Answer» B. Both a and b are large | |
| 1159. |
A reaction has values of ?H and ?S which are both positive. The reaction __________________? |
| A. | Is spontaneous |
| B. | Spontaneity is temperature dependent |
| C. | Has an increasing free energy |
| D. | Is non-spontaneous |
| Answer» E. | |
| 1160. |
A process used for the Concentration of Ore is________? |
| A. | Roasting |
| B. | Forth flotation |
| C. | Electrolysis |
| D. | Distillation |
| Answer» C. Electrolysis | |
| 1161. |
A process controlled by Distributive law is__________________? |
| A. | Crystallization |
| B. | Sublimation |
| C. | Solvent extraction |
| D. | Filtration |
| Answer» D. Filtration | |
| 1162. |
A polymer in which three different monomers combine called_____________? |
| A. | Copolymer |
| B. | Terpolymer |
| C. | Homopolymer |
| D. | Biopolymer |
| Answer» C. Homopolymer | |
| 1163. |
A method of separation of components from its solution using Distribution law is ___________________? |
| A. | Sublimation |
| B. | Crystallisation |
| C. | Solvent extraction |
| D. | Distillation |
| Answer» D. Distillation | |
| 1164. |
A malleable solid is one which can be_________________? |
| A. | Converted into wires |
| B. | Converted into thin sheets |
| C. | Melted easily |
| D. | All of the above |
| Answer» C. Melted easily | |
| 1165. |
A limiting reactant is one which________________? |
| A. | is taken in lesser quantity in grams as compared to other reactants |
| B. | is taken in lesser quantity in volume as compared to other reactants |
| C. | gives the maximum amount of the product which is required |
| D. | gives the minimum amount of the product under consideration |
| Answer» E. | |
| 1166. |
A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________ ? |
| A. | Beta particle |
| B. | Gamma particle |
| C. | Alpha particle |
| D. | Negative particle |
| Answer» D. Negative particle | |
| 1167. |
A great variety of the organic compounds is due to its property of carbon_________________? |
| A. | Show tetravalency |
| B. | Exhibit catenation |
| C. | Show isomerism |
| D. | Can form multiple bonds |
| Answer» C. Show isomerism | |
| 1168. |
A elements are named as alkali metals because_______________? |
| A. | Their oxides are basic |
| B. | Their oxide and hydroxides are water soluble |
| C. | Both A & B |
| D. | They are found in earth |
| Answer» D. They are found in earth | |
| 1169. |
A double bond consists of __________________? |
| A. | Two sigma bonds |
| B. | Two Pi bonds |
| C. | One sigma and one Pi bonds |
| D. | One sigma and two Pi bonds |
| Answer» D. One sigma and two Pi bonds | |
| 1170. |
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 | |
| 1171. |
10ml of alcohol dissolve in 90ml of water unit of concentration used is________________? |
| A. | % w/w |
| B. | % w/v |
| C. | % v/v |
| D. | % v/w |
| Answer» D. % v/w | |
| 1172. |
A catalyst can not effect__________________? |
| A. | Products |
| B. | Chemical equilibrium |
| C. | Reactants |
| D. | both A & B |
| Answer» E. | |
| 1173. |
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. | |
| 1174. |
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. | |
| 1175. |
95% ethanol is called_________________? |
| A. | methylated spirit |
| B. | wood spirit |
| C. | rectified spirit |
| D. | absolute alcohol |
| Answer» D. absolute alcohol | |
| 1176. |
58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be___________________? |
| A. | 0.1 M |
| B. | 1 m |
| C. | 1 M |
| D. | 0.1 N |
| Answer» D. 0.1 N | |
| 1177. |
50% inversion of configuration of molecules take place in a___________________? |
| A. | E1 – reaction |
| B. | E2 – reaction |
| C. | SN1 – reaction |
| D. | SN2 – reaction |
| Answer» D. SN2 – reaction | |
| 1178. |
2nd orbit is ___________ away from nucleus of H-atom as compared to 1st orbit is ? |
| A. | 2-times |
| B. | 3-times |
| C. | 4-times |
| D. | 6 times |
| Answer» D. 6 times | |
| 1179. |
2-propanol and 1-propanol show the isomerism________________? |
| A. | metamerism |
| B. | functional group isomerism |
| C. | geometric isomerism |
| D. | position isomerism |
| Answer» E. | |
| 1180. |
18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________? |
| A. | 8 |
| B. | 5.1 |
| C. | 6 |
| D. | one/fifty one |
| Answer» E. | |
| 1181. |
1 mole of electron has mass in microgram_________________? |
| A. | 1.008 x 10-3 |
| B. | 5.5 x 10-4 |
| C. | 1.84 x 10-4 |
| D. | 1.673 x 10-3 |
| Answer» C. 1.84 x 10-4 | |
| 1182. |
1 a.m.u =__________________? |
| A. | 1.6 x 10-27 kg |
| B. | 1.6 x 10-24 kg |
| C. | 1.6 x 10-26 kg |
| D. | 1.6 x 10-28 kg |
| Answer» B. 1.6 x 10-24 kg | |
| 1183. |
0.5 mole of nitrogen gas and 0.5 mole of carbon monoxide gas at STP have same_____________? |
| A. | Value of a |
| B. | Mass |
| C. | Atoms |
| D. | Both B and C |
| Answer» E. | |
| 1184. |
1 molar solution of glucose in water contains weight of glucose________________? |
| A. | 180g/dm3 |
| B. | 170g/dm3 |
| C. | 190g/dm3 |
| D. | 195g/dm3 |
| Answer» B. 170g/dm3 | |