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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Vinegar made by fermentation from cane sugar contains1). palmitic acid2). lactic acid3). citric acid4). acetic acid |
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| 202. |
Detergents used for cleaning clothes and utensils contain1). nitrates2). bicarbonates3). sulphonates4). bismuthates |
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| 203. |
Which of the following type of coal has the lowest proportion of volatile matter ?1). Lignite2). Peat3). Bituminous4). Anthracite |
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| 204. |
Which gas does not form the part of atmosphere ?1). Nitrogen2). Helium3). Chlorine4). None of the above |
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| 205. |
German silver used for making utensils is an alloy of1). copper silver nickel2). copper zinc nickel3). copper zinc aluminium4). copper nickel aluminium |
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| 206. |
Cement containing excess amount of lime1). cracks during setting2). becomes more strong3). is slow setting4). is quick setting |
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| 207. |
Metal are good conductors because1). they contain free electrons2). the molecules in them are very close to each other3). the molecules in them collide Very freely4). they contain reflecting surface |
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| 208. |
Aqua regia is a 1:3 mixture by volume of1). conc. nitric acid and cone hydrochloric acid2). cone hydrochloric acid and cone nitric acid3). cone nitric acid and cone sulphuric acid4). conc. sulphuric acid and cone nitric acid |
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| 209. |
The substance most commonly used as a food preservative is1). sodium carbonate2). tartaric acid3). acetic acid4). sodium salt of benzoic acid |
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| 210. |
Which among the following coal contains 90 per cent of carbon?1). Anthracite2). Bitumen3). Lignite4). Peat |
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| 211. |
Which of the following is a renewable source of energy ?1). Coal2). Geothermal powder3). Natural gas4). Uranium |
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| 212. |
Curd is sour due to presence of1). Tartaric acid2). Lactic acid3). Acetic acid4). Oxalic acid |
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| 213. |
Nuclear energy is a mineralbased energy source. It is derived from1). uranium2). thorium3). plutonium4). All of the above |
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| 214. |
Which of the following is used to increase the antiknocking property of petrol1). Tetramethyl lead2). Tetraethyl lead3). Trimethyl lead4). Triethyl lead |
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| 215. |
If a boy sitting in a train which is moving at a constant velocity throws a ball straight up into the air the ball will1).fall in front of him2).fall behind him 3). fall into his hand 4). None of the above |
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| 216. |
Which of the following processes is used for the production of Biodiesel?1). Transamination2). Transcription3). Trans esterification4). Translation |
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| 217. |
One of the following is used to dissolve noble metals.That is1). Nitric acid2). Hydrochloric acid3). Sulphuric acid4). Aqua ragla |
| Answer» 4 AQUA RAGLA is the WRIGHT ANSWER | |
| 218. |
Which variety of coal contains recognizable traces of the original plant material ?1). Anthracite2). Lignite3). Peat4). Bitumen |
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| 219. |
Which inetal does not undergo corrosion due to the formation of oxide layer?1). Copper2). Iron3). Aluminium4). Zinc |
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| 220. |
The isotope of Uranium used in atomic reactors is1). U2352). U2363). U2374). U232 |
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| 221. |
Which of the following has got more heat capacity ?1).Iron piece2).Water3).Gold piece4).Benzene |
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| 222. |
Oil rises up the wick in a lamp because1).Oil is very light2).Of the diffusion of oil through the wick 3). Of the surface tension phenomenon 4). Of the capillary action phenomenon |
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| 223. |
Rock salt is a mineral containing1). potassium2). magnesium3). sodium4). iron |
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| 224. |
An example of replenshible energy source is1). Coal2). Petroleum3). Lignite4). Biomass |
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| 225. |
A kilowatt-hour is unit of1). Energy 2). Power 3). Electric charge 4). Electric current |
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| 226. |
The mass number of a nucleus is.1). always less than its atomic number2). always more than its atomic number3). always equal to its atomic number4). sometimes more and sometimes equal to its atomic number |
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| 227. |
Ozone layer is present in1). Troposphere2). Ionosphere3). Stratosphere4). Exosphere |
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| 228. |
The wire of flash bulb is made of:1). Copper2). Barium3). Magnesium4). Silver |
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| 229. |
The first metal used by a man was1). Copper2). Silver3). Bronze4). Brass |
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| 230. |
The charcoal used to decolourise brown sugar solution is1). Wood charcoal2). Coconut charcoal3). Animal charcoal4). Sugar charcoal |
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| 231. |
Spirit in contact with body gives cool sensation because it is :1). liquid2). transparent3). highly volatile4). a good conductor |
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| 232. |
The gas which turns into liquid at the lowest temperature among the following is1). hydrogen2). oxygen3). helium4). nitrogen |
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| 233. |
The reason for a swimming pool to appear less deep than the actual depth is1). refraction 2). light scattering3). reflection4).interference |
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| 234. |
The S.I. Unit of electric charge is :1).amphere 2). coulomb 3). e.s.u 4). Kelvin |
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| 235. |
If a copper wire Is increased to double its length Its resistance will become1).four times2).one fourth3).double4).hall |
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| 236. |
The most reactive among the halogens is1). Fluorine2). Chlorine3). Bromine4). Iodine |
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| 237. |
Carbon dioxide is1). a reducing agent2). an oxidising agent3). a dehydrating agent4). a bleaching agent |
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| 238. |
What should a person on a freely rotating turn table do to decrease his (angular) speed ?1). Bring his hands together 2). Raise his hands up 3). Spread his hands outwards 4). Sit down with raised hands |
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| 239. |
In upper layer of atmosphere ozone is formed1). the action of ultraviolet rays on oxygen2). the combination of oxygen molecules3). subjecting oxygen to high pressure4). the action of nitrogen on oxygen in atmosphere |
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| 240. |
Atomic power plant work son the principle of1).fission2). fusion3). thermal combustion4). combined effect of all the above three |
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| 241. |
A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is 1). zero2).one3). less than one4). more than one |
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| 242. |
The material used in the manufacture of lead pencil is1). Graphite2). Lead3). Carbon4). Mica |
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| 243. |
Which among the following types of coal produces most heat per unit?1).Coal2).Lignite3).Anthracite4).Pit |
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| 244. |
Ethanol containing 5%. water is known as1). rectified spirit2). denatured spirit3). methylated alcohol4). power alcohol |
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| 245. |
The natural resource known as black gold is1). coal2). lead3). tin4). platinum |
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| 246. |
Setting of plaster of Paris involves1). dehydration process2). hydration to form other hydrates3). oxidation process4). reduction process |
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| 247. |
Copper is refined by1). roasting2). oxidation3). electrolysis4). zone refining |
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| 248. |
The sudden fall of atmospheric pressure indicates1).fair weather2).storm3).rain4).cold weather |
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| 249. |
Two stones of different masses are dropped simultaneously from the top of a building 1). Smaller stone reaches the ground earlier 2). Larger stone reaches the ground earlier3). Both the stones reach the ground at the same time4). Larger stone reaches the ground later |
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| 250. |
Velocity of sound in air does not change with the change of1). Temperature of air 2). Pressure of air 3). Moisture content in air4). Wind in the direction of propagation of sound |
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