MCQOPTIONS
Saved Bookmarks
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.
| 1201. |
All atoms of uranium have the same |
| A. | Atomic mass |
| B. | Number of electrons |
| C. | Atomic number |
| D. | Mass number |
| Answer» D. Mass number | |
| 1202. |
All atoms of the same element have the same |
| A. | number of protons |
| B. | number of electrons |
| C. | atomic number |
| D. | All of the above |
| Answer» E. | |
| 1203. |
Alkenes were earlier known as ______. |
| A. | Paraffins |
| B. | Titoffins |
| C. | Olefins |
| D. | Meloffins |
| Answer» D. Meloffins | |
| 1204. |
Alkali metals can |
| A. | be highly unstable at room temperature |
| B. | vaporize at room temperature |
| C. | easily gain electrons |
| D. | easily lose electrons |
| Answer» E. | |
| 1205. |
Alkali metals are assigned which group in the Modern Periodic Table? |
| A. | Second group |
| B. | Eighteenth group |
| C. | Third group |
| D. | First group |
| Answer» E. | |
| 1206. |
Alcohol is more volatile than water because _________ is lower than water |
| A. | its boiling point |
| B. | its density |
| C. | its viscosity |
| D. | its surface tension |
| Answer» B. its density | |
| 1207. |
Alcohol is a stimulant. true or false |
| A. | 1 |
| B. | |
| C. | |
| D. | |
| Answer» C. | |
| 1208. |
Air is |
| A. | compound |
| B. | element |
| C. | mixture |
| D. | solution |
| Answer» D. solution | |
| 1209. |
Air ___________________ are the substances which contaminate the air. |
| A. | Reactants |
| B. | Irritants |
| C. | Resistants |
| D. | Pollutants |
| Answer» E. | |
| 1210. |
After cleaning the thermometer should be placed in |
| A. | Sanitizer |
| B. | Ice cold water |
| C. | Mercury |
| D. | None of the above |
| Answer» B. Ice cold water | |
| 1211. |
Adding which substance gives blue colour to glass? |
| A. | Manganese oxide |
| B. | Cobalt oxide |
| C. | Chromium oxide |
| D. | Iron oxide |
| Answer» C. Chromium oxide | |
| 1212. |
Acute diabets  patients smell of |
| A. | acetone |
| B. | ether |
| C. | ethyl alcohol |
| D. | methyl alcohol |
| Answer» B. ether | |
| 1213. |
Activated Charcoal is used to remove colouring matter from pure substances by_______ |
| A. | Bleaching |
| B. | Oxidation |
| C. | Adsorption |
| D. | Reduction |
| Answer» D. Reduction | |
| 1214. |
Acids that contain Hydrogen and other non-metallic element(s), except Oxygen, are called |
| A. | Hydracids |
| B. | Dilute acids |
| C. | Strong acids |
| D. | Weak acids |
| Answer» B. Dilute acids | |
| 1215. |
Acidity in a person can be cured by consuming .............._x005F_x000D_ Â _x005F_x000D_ |
| A. | baking soda solution |
| B. | vinegar solution |
| C. | lemon juice |
| D. | butter milk |
| Answer» B. vinegar solution | |
| 1216. |
Acid rain is caused due to pollution of atmosphere by |
| A. | oxides of nitrogen and sulphur |
| B. | oxides of nitrogen and phosphorous |
| C. | oxides of carbon and nitrogen |
| D. | oxides of nitrogen and methane |
| Answer» D. oxides of nitrogen and methane | |
| 1217. |
Acid rain is caused by release of ___ and___ into the air. |
| A. | Carbon dioxide and Carbon monoxide |
| B. | Sulphur dioxide and nitrogen oxides |
| C. | Oxygen and Water vapour |
| D. | Nitrous oxide and Ozone |
| Answer» C. Oxygen and Water vapour | |
| 1218. |
Acid Rain has pH value of |
| A. | 5.5 or less |
| B. | 12.5 or more |
| C. | 10.5 or more |
| D. | 8.5 or more |
| Answer» B. 12.5 or more | |
| 1219. |
Acid Precipitation is caused by a mix of |
| A. | Hydrogen, Oxygen, and Saline |
| B. | Water, Soil, and Air |
| C. | Respiration, Carbonic Acids, and Seawater |
| D. | Sulfur Dioxide, Carbon Dioxide, Nitrogen Oxides |
| Answer» E. | |
| 1220. |
Acetic Acid is another name for which of the following? |
| A. | Vinegar |
| B. | Baking Soda |
| C. | Copper Sulphate |
| D. | Magnesium Oxide |
| Answer» B. Baking Soda | |
| 1221. |
According to .........., the properties of elements are a periodic function of their atomic masses._x005F_x000D_ Â _x005F_x000D_ |
| A. | Lead |
| B. | Aluminum |
| C. | Zinc |
| D. | Copper |
| Answer» C. Zinc | |
| 1222. |
According to the modern Periodic Law, the properties of elements are periodic functions of their |
| A. | volency |
| B. | atomic mass |
| C. | number of neutrons |
| D. | atomic number |
| Answer» E. | |
| 1223. |
According to Newlands' law of Octaves, how many elements exist in nature? |
| A. | 56 |
| B. | 66 |
| C. | 55 |
| D. | 65 |
| Answer» B. 66 | |
| 1224. |
According to Dalton’s Atomic Theory, the smallest indivisible particles of matter is called ______. |
| A. | molecule |
| B. | atom |
| C. | compound |
| D. | element |
| Answer» C. compound | |
| 1225. |
Absolute Zero is defined as |
| A. | The temperature at which all molecular motion ceases |
| B. | At which water boils at 298K |
| C. | At which liquid Helium boils |
| D. | At which the volume becomes zero |
| Answer» B. At which water boils at 298K | |
| 1226. |
According to an early Indian philosopher everything is made up of ___ basic elements. |
| A. | 2 |
| B. | 4 |
| C. | 3 |
| D. | 5 |
| Answer» E. | |
| 1227. |
A yellow element that stinks when burned |
| A. | Sulphur |
| B. | Chlorine |
| C. | Fluorine |
| D. | Bromine |
| Answer» B. Chlorine | |
| 1228. |
A substance that cannot be broken down into simpler substances |
| A. | Heterogenous mixure |
| B. | Compound |
| C. | Homogenous mixture |
| D. | Element |
| Answer» E. | |
| 1229. |
A standard drink is generally |
| A. | 5 oz Glass of Wine |
| B. | _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ 12 oz Beer_x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ Â _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ Â _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ _x005F_x000D_ |
| C. | 1.5 oz of Hard Liquor |
| D. | All the above |
| Answer» E. | |
| 1230. |
A solution turns blue litmus to red. its pH is likely to be ............._x005F_x000D_ |
| A. | 9 |
| B. | 8 |
| C. | 6 |
| D. | 7 |
| Answer» D. 7 | |
| 1231. |
A solution that is at equilibrium must be |
| A. | saturated |
| B. | concentrated |
| C. | unsaturated |
| D. | dilute |
| Answer» B. concentrated | |
| 1232. |
A solution that is hypotonic to a cell has |
| A. | more water molecules surrounding the cell than inside the cell |
| B. | more water molecules inside the cell than outside the cell |
| C. | equal water molecules inside and outside the cell |
| D. | None of the above |
| Answer» B. more water molecules inside the cell than outside the cell | |
| 1233. |
A solution contains 33 g of common salt in 320 g of water. Calculate the concentration in terms of mass, by mass percentage of the solution. |
| A. | 0.1305 |
| B. | 9.09 g |
| C. | 9.35g |
| D. | 0.0935 |
| Answer» E. | |
| 1234. |
A simple rule concerning water and electrolyte regulation is |
| A. | water passively follows salt |
| B. | salt actively follows water |
| C. | water actively follows salt |
| D. | salt passively follows water |
| Answer» B. salt actively follows water | |
| 1235. |
A sample of matter must be copper if |
| A. | atoms in the sample react with oxygen |
| B. | the sample can conduct electricity |
| C. | each atom in the sample has 29 protons |
| D. | the sample melts at 1768k |
| Answer» D. the sample melts at 1768k | |
| 1236. |
A radioactive substance has a half life of four months, three-fourth of the substance would decay in |
| A. | 3 months |
| B. | 4 months |
| C. | 8 months |
| D. | 12 months |
| Answer» D. 12 months | |
| 1237. |
A Radioactive subatance emits |
| A. | alpha particles |
| B. | beta particle |
| C. | gamma particle |
| D. | all of the three |
| Answer» E. | |
| 1238. |
A radio-active substance has a half life of six months. Three-fourth of the substance will decay in ______. |
| A. | Six months |
| B. | Ten months |
| C. | Twelve Months |
| D. | Twenty four months |
| Answer» D. Twenty four months | |
| 1239. |
A pure substance can only be |
| A. | Compound |
| B. | an element |
| C. | an element or a compound |
| D. | a heterogeneous mixture |
| Answer» D. a heterogeneous mixture | |
| 1240. |
A particle which is similar to electron is |
| A. | positron |
| B. | beta particle |
| C. | photon |
| D. | mason |
| Answer» C. photon | |
| 1241. |
A proton is identical to _____. |
| A. | the nucleus of helium |
| B. | the nucleus of a hydrogen atom |
| C. | an alpha-particle |
| D. | a beta particle |
| Answer» E. | |
| 1242. |
A particle which is four times in mass and two times in charge that of proton is |
| A. | helium atom |
| B. | an alpha particle |
| C. | deuteron |
| D. | tritium |
| Answer» C. deuteron | |
| 1243. |
A mixture of sand and naphthalene can be seperated by __________ |
| A. | Fractional distillation |
| B. | Sublimation |
| C. | Chromatography |
| D. | Any of them |
| Answer» C. Chromatography | |
| 1244. |
A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at : |
| A. | 518 nm |
| B. | 1035 nm |
| C. | 325 nm |
| D. | 743 nm |
| Answer» E. | |
| 1245. |
A mixture of ethyl alcohol  and water can be seperated  by |
| A. | evaporation |
| B. | sublimation |
| C. | using a seperating funnel |
| D. | fractional distillation |
| Answer» E. | |
| 1246. |
A ‘breath test’ used by traffic police to check drunken driving uses ____? |
| A. | Turmeric on filter paper |
| B. | Silica gel coated with silver nitrate |
| C. | potassium permanganate-sulphuric acid |
| D. | Potassium dichromatic-sulphuric acid |
| Answer» E. | |
| 1247. |
A gas is found to have the formula . Its vapour density is 70.The value of n must be |
| A. | 5 |
| B. | 4 |
| C. | 9 |
| D. | 6 |
| Answer» B. 4 | |
| 1248. |
A feature of catabolic reactions is that they |
| A. | occur only in mitochondria |
| B. | occur only during loss of body weight |
| C. | involve release of energy |
| D. | involve consumption of energy |
| Answer» D. involve consumption of energy | |
| 1249. |
A disaccharide is formed by the chemical bonding of |
| A. | two monosaccharides |
| B. | two polysaccharides |
| C. | one monosaccharide and one polysaccharide |
| D. | All the above |
| Answer» B. two polysaccharides | |
| 1250. |
A device used for the measurement of radioactivity is |
| A. | mass spectrometer |
| B. | cyclotron |
| C. | nuclear reactor |
| D. | G.M.counter |
| Answer» E. | |