MCQOPTIONS
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MCQOPTIONS
This section includes 180 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
The long range potential of nuclear energy in India depends on its reserves of |
| A. | thorium |
| B. | uranium |
| C. | plutonium |
| D. | radium |
| Answer» C. plutonium | |
| 152. |
What is the chemical name for Baking Soda ? |
| A. | Sodium carbonate |
| B. | Sodium bicarbonate |
| C. | Sodium nitrite |
| D. | Sodium nitrate |
| Answer» C. Sodium nitrite | |
| 153. |
The pH of human blood is between : |
| A. | 6.5-7 |
| B. | 7.5-8 |
| C. | 8-9 |
| D. | 4.5-5 |
| Answer» C. 8-9 | |
| 154. |
The polymerisation of which ofthe following is used in manufacturing of polythene in industry ? |
| A. | Methane |
| B. | Styrene |
| C. | Acetylene |
| D. | Ethylene |
| Answer» E. | |
| 155. |
Which of the following imparts deep blue colour to glass ? |
| A. | Cobalt oxide |
| B. | Cupric oxide |
| C. | Ferrous oxide |
| D. | Nickel oxide |
| Answer» E. | |
| 156. |
Curd is sour due to presenceof |
| A. | Tartaric acid |
| B. | Lactic acid |
| C. | Acetic acid |
| D. | Oxalic acid |
| Answer» C. Acetic acid | |
| 157. |
Which one of the following is used to restore the colour of old oilpaintings ? |
| A. | Ozone |
| B. | Hydrogen peroxide |
| C. | Barium peroxide |
| D. | Sodium peroxide |
| Answer» C. Barium peroxide | |
| 158. |
Among the following iron ores, the highest percentage of iron content is found in |
| A. | Haemetite |
| B. | Magnetite |
| C. | Limnonite |
| D. | None of these |
| Answer» B. Magnetite | |
| 159. |
Heat resistant variety of glass is |
| A. | Pyrex glass |
| B. | Hard glass |
| C. | Flint glass |
| D. | None of these |
| Answer» D. None of these | |
| 160. |
Sour taste of Coca Cola is due to the presence of |
| A. | acetic acid |
| B. | phosphoric acid |
| C. | hydrochloric acid |
| D. | formic acid |
| Answer» C. hydrochloric acid | |
| 161. |
Which one of the following is radioactive ? |
| A. | Cesium |
| B. | Platinum |
| C. | Strontium |
| D. | Thorium |
| Answer» E. | |
| 162. |
By-product obtained by soapindustry is |
| A. | Caustic soda |
| B. | Glycerol |
| C. | Naphthalene |
| D. | Caustic potash |
| Answer» C. Naphthalene | |
| 163. |
For determination of the age of which among the following is carbon dating method used ? |
| A. | Fossils |
| B. | Rocks |
| C. | Trees |
| D. | 1& 2 above |
| Answer» E. | |
| 164. |
Preparation of Dalda or Vanaspati ghee from vegetable oil utilizes the following process : |
| A. | Hydrolysis |
| B. | Oxidation |
| C. | Hydrogenation |
| D. | Ozonolysis |
| Answer» D. Ozonolysis | |
| 165. |
Milk Sugar is |
| A. | Lactose |
| B. | Maltose |
| C. | Galactose |
| D. | Sucrose |
| Answer» B. Maltose | |
| 166. |
Rusting of iron takes place dueto |
| A. | oxidation |
| B. | carbonation |
| C. | exfoliation |
| D. | corrosion |
| Answer» B. carbonation | |
| 167. |
Plaster of Paris is made by partial dehydration of |
| A. | epsom salt |
| B. | gypsum salt |
| C. | blue vitriol |
| D. | green vitriol |
| Answer» C. blue vitriol | |
| 168. |
Iodized salt is beneficial for |
| A. | lowering of blood pressure |
| B. | prevention of dehydration |
| C. | thyroid function |
| D. | salivary glands |
| Answer» D. salivary glands | |
| 169. |
Which of the following is a supercooled liquid ? |
| A. | Ice Cream |
| B. | Teflon |
| C. | Glass |
| D. | Mercury |
| Answer» D. Mercury | |
| 170. |
Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? |
| A. | Iron and cadmium |
| B. | Nickel and cadmium |
| C. | Lead peroxide and lead |
| D. | Zinc and carbon |
| Answer» C. Lead peroxide and lead | |
| 171. |
Bleaching action of moist sulphur di-oxide is because of its |
| A. | basic property |
| B. | acidic property |
| C. | oxidising property |
| D. | reducing property |
| Answer» D. reducing property | |
| 172. |
The ratio of pure gold in 18 carat gold is : |
| A. | 60% |
| B. | 75% |
| C. | 80% |
| D. | 90% |
| Answer» C. 80% | |
| 173. |
Milk of Magnesia is a suspension of : |
| A. | magnesium sulphate |
| B. | magnesium carbonate |
| C. | magnesium hydroxide |
| D. | magnesium chloride |
| Answer» D. magnesium chloride | |
| 174. |
Fermentation of milk to curd is due to : |
| A. | Mycobacterium |
| B. | Staphylococcus |
| C. | Lactobacillus |
| D. | Yeasts |
| Answer» D. Yeasts | |
| 175. |
Which of the following is used to iodise common salf ? |
| A. | Potassium iodide |
| B. | Iodine |
| C. | Potassium iodate |
| D. | Sodium iodide |
| Answer» D. Sodium iodide | |
| 176. |
The element which is commonly used in nuclear for producing electricity by nuclear fission is |
| A. | Radium |
| B. | Plutonium |
| C. | Uranium |
| D. | Deuterium |
| Answer» D. Deuterium | |
| 177. |
The radio-active element used in heart pacemakers is |
| A. | Uranium |
| B. | Deuterium |
| C. | Plutonium |
| D. | Radium |
| Answer» B. Deuterium | |
| 178. |
What is the chemical name for baking soda ? |
| A. | Sodium carbonate |
| B. | Sodium bicarbonate |
| C. | Sodium nitrite |
| D. | Sodium nitrate |
| Answer» C. Sodium nitrite | |
| 179. |
All the four quantum numbers of two electrons in an atom are not the same. It is the law of |
| A. | Hund s |
| B. | Exclusion Principle of Pauli |
| C. | Uncertainty Principle of Hiesenberg |
| D. | Avogadro s Law |
| Answer» C. Uncertainty Principle of Hiesenberg | |
| 180. |
What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ? |
| A. | Radium dating |
| B. | Uranium dating |
| C. | Carbon dating |
| D. | Deuterium dating |
| Answer» D. Deuterium dating | |