MCQOPTIONS
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MCQOPTIONS
This section includes 1315 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1151. |
Atomic number is always equal to ______. |
| A. | Number of protons |
| B. | Number of neutrons |
| C. | Number of electrons |
| D. | Sum of protons and neutrons_x005F_x000D_ |
| Answer» B. Number of neutrons | |
| 1152. |
Atomic mass of Nitrogen is 14 and that of Hydrogen is 1. What will be the molecular mass of Ammonia? |
| A. | 18 |
| B. | 17 |
| C. | 16 |
| D. | 15 |
| Answer» C. 16 | |
| 1153. |
Atomic mass of Sulphur is 32 u. The number of moles in 16 grams of Sulphur is: |
| A. | 0.5 moles of Sulphur |
| B. | 0.25 moles of Sulphur |
| C. | 0.75 moles of Sulphur |
| D. | 1 mole of Sulphur |
| Answer» B. 0.25 moles of Sulphur | |
| 1154. |
Atomic mass of Carbon is 12 and that of Helium is 4. State which of the following statements is true for 1 mole of each of the elments? |
| A. | 1 mole of Helium will contain 3 times more atoms than 1 mole of Carbon |
| B. | 1 mole of Carbon will contain the same number of atoms as present in 1 mole of Helium |
| C. | 1 mole of Carbon will contain one-third the number of atoms present in 1 mole of Helium |
| D. | 1 mole of Carbon will contain 3 times more atoms than 1 mole of Helium |
| Answer» C. 1 mole of Carbon will contain one-third the number of atoms present in 1 mole of Helium | |
| 1155. |
At low temperature, Lead behaves as a : |
| A. | Semi conductor |
| B. | Super conductor |
| C. | Insulator |
| D. | Conductor |
| Answer» C. Insulator | |
| 1156. |
Atomic explosion is triggered by |
| A. | thermo nuclear reaction |
| B. | chemical reaction |
| C. | controlled chain reaction |
| D. | uncontrolled chain reaction |
| Answer» E. | |
| 1157. |
Artificial radioactivity elements are present in |
| A. | s - block |
| B. | p - block |
| C. | d - block |
| D. | f - block |
| Answer» E. | |
| 1158. |
Atomic bomb is based on which of the following principle? |
| A. | Nuclear fusion |
| B. | Nuclear fission |
| C. | Natural radioactivity |
| D. | All options are correct |
| Answer» C. Natural radioactivity | |
| 1159. |
Atmosphere of Venus mostly contains which of the following gases? _x005F_x000D_ |
| A. | Nitrogen |
| B. | Hydrogen |
| C. | Oxygen |
| D. | Carbon dioxide |
| Answer» E. | |
| 1160. |
Apart from proposing atomic theory, what did John Dalton researched on?_x005F_x000D_ |
| A. | Plants |
| B. | Colour blindness |
| C. | Penicillin |
| D. | Plastic |
| Answer» C. Penicillin | |
| 1161. |
Arrange the following compounds in order of increasing acidity? |
| A. | o-cresol < phenol < o-nitrophtenol |
| B. | phenol < o-nitrophtenol < o-cresol |
| C. | o-nitrophtenol < o-cresol < phenol |
| D. | None of the above |
| Answer» B. phenol < o-nitrophtenol < o-cresol | |
| 1162. |
Aqueous solution of copper sulphate? |
| A. | does not affects litmus |
| B. | affects both red and blue litmus |
| C. | turns blue litmus red |
| D. | turns red litmus blue |
| Answer» D. turns red litmus blue | |
| 1163. |
Aromatic hydrocarbons contain at least _____ benzene like ring in their molecules. |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» E. | |
| 1164. |
Antimony is |
| A. | metal |
| B. | non metal |
| C. | non metaloid |
| D. | metalloid |
| Answer» E. | |
| 1165. |
Another name for the activated complex is |
| A. | Transmission state |
| B. | Energy barrier |
| C. | Collision group |
| D. | Transition state |
| Answer» E. | |
| 1166. |
Anions are formed by _____. |
| A. | losing of electrons |
| B. | gaining of electrons |
| C. | gaining of neutrons |
| D. | losing of neutrons |
| Answer» C. gaining of neutrons | |
| 1167. |
Anaerobic glycolysis occurs without |
| A. | water |
| B. | glucose |
| C. | oxygen |
| D. | All of the above |
| Answer» D. All of the above | |
| 1168. |
An unbalanced chemical equation is called a |
| A. | rough chemical equation |
| B. | natural chemical equation |
| C. | complex chemical equation |
| D. | skeletal chemical equation |
| Answer» E. | |
| 1169. |
An ∠particle is _____. |
| A. | A hydrogen molecule |
| B. | A helium nucleus |
| C. | An atom of hydrogen |
| D. | A proton |
| Answer» C. An atom of hydrogen | |
| 1170. |
An ionic bond is formed when |
| A. | sharing of electrons |
| B. | transfer of electrons |
| C. | Both A & B |
| D. | losing of protons |
| Answer» C. Both A & B | |
| 1171. |
An ionic bond involves _____._x005F_x000D_ |
| A. | the sharing of a single pair of electrons |
| B. | an attraction between ions of opposite charge |
| C. | the unequal sharing of an electron pair |
| D. | water avoidance |
| Answer» B. an attraction between ions of opposite charge | |
| 1172. |
An example of an extensive property of matter is |
| A. | Volume |
| B. | Mass |
| C. | Density |
| D. | All the above |
| Answer» E. | |
| 1173. |
An element with an atomic number of ___ will form a basic oxide._x005F_x000D_ |
| A. | 20 |
| B. | 7 |
| C. | 6 |
| D. | 17 |
| Answer» B. 7 | |
| 1174. |
An element X forms an oxide , what ihe valency of X |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 6 |
| Answer» E. | |
| 1175. |
An element with an atomic number of 17 is_x005F_x000D_ |
| A. | an alkali metal |
| B. | a rare gas |
| C. | a halogen gas |
| D. | a transition metal |
| Answer» D. a transition metal | |
| 1176. |
An element which is preserved under water is |
| A. | sodium |
| B. | sulphur |
| C. | red phosphorus |
| D. | white phosphorus |
| Answer» E. | |
| 1177. |
An element of atomic number 16 will belong to the ...... period of the periodic table._x005F_x000D_ |
| A. | 5th |
| B. | 6th |
| C. | 3th |
| D. | 4th |
| Answer» D. 4th | |
| 1178. |
An element has an atomic weight of W and an atomic number of N. The number of protons in the nucleus of its atom is_x005F_x000D_ |
| A. | N |
| B. | W |
| C. | W + N |
| D. | W - N |
| Answer» B. W | |
| 1179. |
An element has an atomic number of 15. With which of the following elements will it show similar chemical properties?_x005F_x000D_ |
| A. | Be(4) |
| B. | N(7) |
| C. | Ne(10) |
| D. | O(8) |
| Answer» C. Ne(10) | |
| 1180. |
An element A forms an oxide with formula A3O4. What is the valency of element A? |
| A. | 3 |
| B. | 2 |
| C. | 1 |
| D. | 4 |
| Answer» E. | |
| 1181. |
An electron loses potential energy when it_x005F_x000D_ |
| A. | shifts to a more electronegative atom. |
| B. | increases its kinetic energy. |
| C. | shifts to a less electronegative atom. |
| D. | increases its activity as an oxidizing agent. |
| Answer» B. increases its kinetic energy. | |
| 1182. |
An atom that loses or gains electrons is called |
| A. | Proton |
| B. | Ion |
| C. | Isotope |
| D. | Neutron |
| Answer» C. Isotope | |
| 1183. |
An electrically charged atom or group of atoms is called |
| A. | An ion |
| B. | A meson |
| C. | A electron |
| D. | None of the above |
| Answer» B. A meson | |
| 1184. |
An atom has 7 electrons in its M - shell and contains 18 neutrons in its nucleus. What is its mass number |
| A. | 25 |
| B. | 27 |
| C. | 35 |
| D. | 43 |
| Answer» D. 43 | |
| 1185. |
An atom can achieve octet by ______._x005F_x000D_ Â _x005F_x000D_ I. sharing electron_x005F_x000D_ II. gaining electron_x005F_x000D_ III. losing electron_x005F_x000D_ |
| A. | Only I and II |
| B. | Only I and III |
| C. | Only II and III |
| D. | All I, II and III |
| Answer» E. | |
| 1186. |
An alloy is |
| A. | a compound |
| B. | an allotropic form |
| C. | an isomer |
| D. | a mixture |
| Answer» E. | |
| 1187. |
An alloy is an example of |
| A. | Colloidal solution |
| B. | Emulsion |
| C. | Solid solution |
| D. | Heterogenous mixture |
| Answer» D. Heterogenous mixture | |
| 1188. |
Among the following the maximum covalent character is shown by the compound_x005F_x000D_ (1)MgCl2_x005F_x000D_ (2)FeCl2_x005F_x000D_ (3)SnCl2_x005F_x000D_ (4)Â AlCl3 |
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
| Answer» E. | |
| 1189. |
Among chemical properties, Mendeleev concentrated on the compounds formed by the elements with |
| A. | Hydrogen and Oxygen |
| B. | Hydrogen and Sodium |
| C. | Carbon and Hydrogen |
| D. | Carbon and Sodium |
| Answer» B. Hydrogen and Sodium | |
| 1190. |
Ammonium nitrate, on thermal decomposition, produces : |
| A. | NH3 and NO2 |
| B. | NH3 and NO |
| C. | N2 and H2O |
| D. | N2O and H2O |
| Answer» E. | |
| 1191. |
Ammonia can be dried by |
| A. | Sulphuric acid |
| B. | Calcium oxide |
| C. | Phosphorus pentoxide |
| D. | Calcium Chloride |
| Answer» E. | |
| 1192. |
Aluminium oxide is ___ in nature. |
| A. | amphoteric |
| B. | acidic |
| C. | neutral |
| D. | basic |
| Answer» B. acidic | |
| 1193. |
Alum is used |
| A. | as an analgesic |
| B. | in the purification of water |
| C. | as a fertilizer |
| D. | as a disinfectant |
| Answer» C. as a fertilizer | |
| 1194. |
'Alum' is an example of_x005F_x000D_ |
| A. | Flake salt |
| B. | Table salt |
| C. | Single salt |
| D. | Double salt |
| Answer» E. | |
| 1195. |
Alpha particles are ___________. |
| A. | twice the mass of beta particles |
| B. | negatively charged |
| C. | just like helium nuclei |
| D. | lower in ionizing power as compared to gamma rays |
| Answer» D. lower in ionizing power as compared to gamma rays | |
| 1196. |
Alloy of copper and zinc is called |
| A. | Bronze |
| B. | Gold |
| C. | Silver |
| D. | Brass |
| Answer» E. | |
| 1197. |
All the member of homologous series can be represented by the same general formula. Choose the INCORRECT formula from among the following._x005F_x000D_ Alkane - Cn H2n+2Alkene - Cn H2n+1Alkyne - Cn H2n-2_x005F_x000D_ |
| A. | Alkane - Cn H2n+2 and Alkyne - Cn H2n-2 |
| B. | Alkane - Cn H2n+2 |
| C. | Alkene - Cn H2n+1 |
| D. | Alkyne - Cn H2n-2 |
| Answer» D. Alkyne - Cn H2n-2 | |
| 1198. |
All phosphorus atoms have the same |
| A. | Mass number |
| B. | Number of neutrons plus the number of electrons |
| C. | Atomic number |
| D. | Number of neutrons plus the number of protons |
| Answer» D. Number of neutrons plus the number of protons | |
| 1199. |
All of the following are constituents of RNA molecule except _____ |
| A. | Thymine |
| B. | Adenine |
| C. | Uracil |
| D. | Guanine |
| Answer» B. Adenine | |
| 1200. |
All isotopes of the same element have ____________ |
| A. | different atomic numbers and different atomic mass |
| B. | different atomic numbers and the same atomic mass |
| C. | the same atomic number but different atomic masses |
| D. | the same atomic number and the atomic mass |
| Answer» D. the same atomic number and the atomic mass | |