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.
| 1251. |
A colored ion generally indicates a |
| A. | transition metal |
| B. | metalloid |
| C. | large in size |
| D. | Both B & C |
| Answer» B. metalloid | |
| 1252. |
A change in which one or more new substances are formed is called _________. |
| A. | Physical Change |
| B. | Chemical Change |
| C. | Rusting |
| D. | Galvanisation |
| Answer» C. Rusting | |
| 1253. |
A change in which no new substances are formed is called _____________. |
| A. | Physical Change |
| B. | Chemical Change |
| C. | Rusting |
| D. | Galvanisation |
| Answer» B. Chemical Change | |
| 1254. |
A change in which a substance undergoes a change in its physical properties is called _____________. |
| A. | Chemical Properties |
| B. | Physical Properties |
| C. | Chemical Change |
| D. | Physical Change |
| Answer» E. | |
| 1255. |
A by product of involuntary muscle contraction and relaxation is |
| A. | Oxygen |
| B. | Water |
| C. | Heat |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 1256. |
A bond formed by the transfer of electrons betwwen atoms of the elements is called |
| A. | ionic bond |
| B. | covalent bond |
| C. | co ordinate bond |
| D. | none |
| Answer» B. covalent bond | |
| 1257. |
A bond formed by the transfer of electrons between atoms of the elements is called |
| A. | Ionic bond |
| B. | Covalent bond |
| C. | Co-ordinate bond |
| D. | Hydrogen bond |
| Answer» B. Covalent bond | |
| 1258. |
A bond formed by sharing of electrons between atoms of the element is called |
| A. | ionic bond |
| B. | covalent bond |
| C. | co ordinate bond |
| D. | none |
| Answer» C. co ordinate bond | |
| 1259. |
A/an ___ flame is produced when the oxygen supply is sufficient._x005F_x000D_ |
| A. | red |
| B. | orange |
| C. | blue |
| D. | green |
| Answer» D. green | |
| 1260. |
5.6kwh =?_x005F_x000D_ |
| A. | 14.4 × 108 J |
| B. | 14.4 × 106 J |
| C. | 20.16 × 106 J |
| D. | 14.4 × 105 J |
| Answer» D. 14.4 × 105 J | |
| 1261. |
30 litres of salt solution contains 5% salt. How many litres of water must be added so as to get a resultant solution containing 3%salt? |
| A. | 20 litres |
| B. | 25 litres |
| C. | 30 litres |
| D. | 35 litres |
| Answer» B. 25 litres | |
| 1262. |
15% of an alloy was silver. If in a quantity of alloy there was 51 g of silver, what was the quantity of the other elements in the alloy? |
| A. | 204 g |
| B. | 340 g |
| C. | 300 g |
| D. | 289 g |
| Answer» E. | |
| 1263. |
2O represents two ......... of oxygen._x005F_x000D_ |
| A. | ions |
| B. | electrons |
| C. | atoms |
| D. | molecules |
| Answer» D. molecules | |
| 1264. |
1 Mole of CO2 mass is |
| A. | 32 gms |
| B. | 44 gms |
| C. | 16 gms |
| D. | 12 gms |
| Answer» C. 16 gms | |
| 1265. |
....... Theory of Evolution tells us how life evolved from simple to more complex forms._x005F_x000D_ |
| A. | Darwins |
| B. | Wallace |
| C. | Mendel's |
| D. | Lamarck's |
| Answer» B. Wallace | |
| 1266. |
' Yellow cake ' an item of smuggling across border s |
| A. | A crude form of heroin |
| B. | A crude form of cocaine |
| C. | Uranium oxide |
| D. | Unrefined gold |
| Answer» D. Unrefined gold | |
| 1267. |
.......... reaction occurs when sodium sulphate reacts with barium chloride. _x005F_x000D_ |
| A. | Single combination |
| B. | Single displacement |
| C. | Double displacement |
| D. | Double combination |
| Answer» D. Double combination | |
| 1268. |
.......... on mixing with water changes to gypsum._x005F_x000D_ |
| A. | Calcium Phosphate |
| B. | Sodium Hydrogen Carbonate |
| C. | Calcium Phosphate Hemihydrate |
| D. | Calcium Sulphate Hemihydrate |
| Answer» E. | |
| 1269. |
' Misch metal ' is widely used in manufacture of which of the following |
| A. | Material of car brake |
| B. | Smoke detectors |
| C. | Cigarette lighters |
| D. | Emergency lights |
| Answer» D. Emergency lights | |
| 1270. |
‘Plum Pudding Model’ for an atom was proposed by |
| A. | Antoine Lavoisier |
| B. | Robert Boyle |
| C. | Ernest Rutherford |
| D. | J. J. Thomson |
| Answer» E. | |
| 1271. |
___ is used to control the fission reaction rate in a nuclear reactor as it absorbs neutrons without itself getting into fissioning._x005F_x000D_ |
| A. | Heavy water |
| B. | Graphite |
| C. | Water |
| D. | Calcium |
| Answer» E. | |
| 1272. |
___ is used in yellow lamp street lights. |
| A. | Neon |
| B. | Nitrogen |
| C. | Phosphorous |
| D. | Sodium |
| Answer» E. | |
| 1273. |
________ is used for making vinegar. |
| A. | Tartaric acid |
| B. | Malic acid |
| C. | Oxalic acid |
| D. | Acetic acid |
| Answer» E. | |
| 1274. |
______ is used for making chemical apparatus like beakers, flasks etc. |
| A. | Potash glass |
| B. | Hard glass |
| C. | Jena glass |
| D. | Soda glass |
| Answer» C. Jena glass | |
| 1275. |
___ is used as a stabilizer in ice cream. |
| A. | Gelatin |
| B. | Sugar |
| C. | Milk |
| D. | Strawberry |
| Answer» B. Sugar | |
| 1276. |
___ is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase._x005F_x000D_ Â _x005F_x000D_ |
| A. | Sublimation |
| B. | Evaporation |
| C. | Condensation |
| D. | Liquidation |
| Answer» B. Evaporation | |
| 1277. |
....... is the property of attracting electrons by the halogen atoms in a molecule |
| A. | Electron affinity |
| B. | Electro positivity |
| C. | Electro chemistry |
| D. | Electro negativity |
| Answer» E. | |
| 1278. |
____ is the process in which acids and bases react to form salts and water. |
| A. | Distillation |
| B. | Electrolysis |
| C. | Neutralisation |
| D. | Hydrolysis |
| Answer» D. Hydrolysis | |
| 1279. |
___ is the number of shells for elements of the 3rd period._x005F_x000D_ |
| A. | 1 |
| B. | |
| C. | 2 |
| D. | 3 |
| Answer» E. | |
| 1280. |
____ is the most electropositive and ___ is the most electronegative element of the third period of modern periodic table._x005F_x000D_ |
| A. | Sodium, Potassium |
| B. | Magnesium, Aluminium |
| C. | Sodium, Chlorine |
| D. | Aluminium, Chlorine |
| Answer» D. Aluminium, Chlorine | |
| 1281. |
_____ is the most ductile metal. |
| A. | Ph |
| B. | C |
| C. | Au |
| D. | Ag |
| Answer» D. Ag | |
| 1282. |
.......... is the metal used for making filaments of electric bulbs._x005F_x000D_ |
| A. | Iron |
| B. | Tungsten |
| C. | Silver |
| D. | Nickel |
| Answer» C. Silver | |
| 1283. |
_____ is the major component of natural gas. |
| A. | Acetone |
| B. | Methane |
| C. | Chlorine |
| D. | Hexane |
| Answer» C. Chlorine | |
| 1284. |
_____ is the fourth state of matter. |
| A. | Plasma |
| B. | Steam |
| C. | Gas |
| D. | Matteroid |
| Answer» B. Steam | |
| 1285. |
_____ is produced from incomplete burning of fuels such as petrol and diesel. |
| A. | Carbon dioxide |
| B. | Carbon monoxide |
| C. | Nitric oxide |
| D. | Nitrogen dioxide |
| Answer» C. Nitric oxide | |
| 1286. |
___ is one of the states of matter obtained by cooling a gas of very low density to extremely low temperatures. |
| A. | Gas |
| B. | Plasma |
| C. | Bose-Einstein Condensate (BEC) |
| D. | Plasma Condensate |
| Answer» D. Plasma Condensate | |
| 1287. |
____ is not an allotrope of carbon. |
| A. | Buckminsterfullerene |
| B. | Carbon Dioxide |
| C. | Diamond |
| D. | Graphite |
| Answer» C. Diamond | |
| 1288. |
........ is not acidic._x005F_x000D_ |
| A. | SbCl4 |
| B. | CCl4 |
| C. | PCl4 |
| D. | PCl3 |
| Answer» C. PCl4 | |
| 1289. |
........... is not a sub atomic particle of an atom. |
| A. | Neutron |
| B. | Electron |
| C. | Xenon |
| D. | Proton |
| Answer» D. Proton | |
| 1290. |
___ is not a chemical change. |
| A. | Cooking an egg |
| B. | Melting an ice cube |
| C. | Baking a cake |
| D. | Rotting Bananas |
| Answer» C. Baking a cake | |
| 1291. |
________ is made by mixing iron with carbon and metals like chromium, nickel and manganese. |
| A. | Ship |
| B. | Stainless Steel |
| C. | Rust |
| D. | Ozone |
| Answer» C. Rust | |
| 1292. |
....... is displaced when zinc is added to the solution of copper sulphate |
| A. | Copper |
| B. | Hydrogen |
| C. | Zinc |
| D. | Sulphate |
| Answer» B. Hydrogen | |
| 1293. |
_______ is an anaesthetic agent. |
| A. | Acetylene |
| B. | Glycol |
| C. | Diethylether |
| D. | Ethylene |
| Answer» D. Ethylene | |
| 1294. |
___ is amphoteric in nature. |
| A. | SO2 |
| B. | CaO |
| C. | ZnO |
| D. | N2O |
| Answer» D. N2O | |
| 1295. |
........ is a semiconductor._x005F_x000D_ Â _x005F_x000D_ |
| A. | Ga |
| B. | Pb |
| C. | Ge |
| D. | Sn |
| Answer» D. Sn | |
| 1296. |
......... is a deliquescent compound. |
| A. | Quick lime |
| B. | Sulphuric acid |
| C. | Phosphorous pentoxide |
| D. | Magnesium chloride |
| Answer» E. | |
| 1297. |
........... has the greatest electron affnity._x005F_x000D_ |
| A. | Br |
| B. | Cl |
| C. | I |
| D. | F |
| Answer» C. I | |
| 1298. |
__________gives hardness to stainless steel. |
| A. | Zinc |
| B. | Carbon |
| C. | Lead |
| D. | Tin |
| Answer» C. Lead | |
| 1299. |
_________ gets converted to phosgene, when exposed to sunlight. |
| A. | Chloroform |
| B. | Acetone |
| C. | Benzene |
| D. | Propylene |
| Answer» B. Acetone | |
| 1300. |
___________ gases absorb long wave (infrared) radiation from the earth and emit it again towards the earth. |
| A. | Carbon dioxide |
| B. | Methane |
| C. | Greenhouse |
| D. | Ozone |
| Answer» D. Ozone | |