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MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 16201. |
A transition metal ion exists in its highest oxidation state. It is expected to behave as? |
| A. | a chelating agent |
| B. | an oxidising agent |
| C. | a central metal in a coordination compound |
| D. | a reducing agent |
| Answer» C. a central metal in a coordination compound | |
| 16202. |
Minimum permissible vertical wear on nose of a 52 kg CMS crossing onRajdhani route is |
| A. | 6mm |
| B. | 8mm |
| C. | 10mm |
| D. | 12 mm |
| Answer» C. 10mm | |
| 16203. |
Using the extraction of gold the following reactions take placeAu CN- H2O [X][X] Zn ¾® [Y] AuX and Y are respectively? |
| A. | [Au(CN)2]- and [ZN(CN)6]4- |
| B. | [Au(CN)4]2- and [ZN(CN)4]2- |
| C. | [Au(CN)4]3- and [ZN(CN)4]2- |
| D. | [Au(CN)2]- and [ZN(CN)4]2- |
| Answer» E. | |
| 16204. |
During the adsorption of krypton on activated charcoal at low temperature, ______? |
| A. | DH u003e 0 and DS u003e 0 |
| B. | DH u003c 0 and DS u003e 0 |
| C. | DH u003e 0 and DS u003c 0 |
| D. | DH u003c 0 and DS u003c 0 |
| Answer» E. | |
| 16205. |
Denatured alcohol is? |
| A. | Rectified spirit |
| B. | Rectified spirit + methanol + naphtha |
| C. | Undistilled ethanol |
| D. | Ethanol + methanol |
| Answer» C. Undistilled ethanol | |
| 16206. |
Which General of Maharaja Ranjit Singh who conqeured Ladakh |
| A. | Mohkam Singh |
| B. | Zorawar Singh |
| C. | Hari Singh Nalwa |
| D. | Dewan Chand |
| Answer» D. Dewan Chand | |
| 16207. |
William Hawkins visited the Mughal court to secure a right to trade in Mughal ports during the reign of ? |
| A. | Aurangzeb |
| B. | Shah Jahan |
| C. | Jahangir |
| D. | Akbar |
| Answer» D. Akbar | |
| 16208. |
Cooking is fast in a pressure cooker, because? |
| A. | water boils at higher temperature inside the pressure cooker. |
| B. | food particles are effectively smashed. |
| C. | loss of heat due to radiation is minimum. |
| D. | food is cooked at constant volume. |
| Answer» B. food particles are effectively smashed. | |
| 16209. |
Dalton's law of partial pressures is applicable to which one of the following systems? |
| A. | Cannizarro's reaction |
| B. | Sandmeyer's reaction |
| C. | Kolbe's reaction |
| D. | Raschig's reaction |
| Answer» C. Kolbe's reaction | |
| 16210. |
Dalda is prepared from oils by? |
| A. | oxidation |
| B. | hydrolysis |
| C. | reduction |
| D. | distillation |
| Answer» D. distillation | |
| 16211. |
Points u0026 Crossing is laid at a cant of |
| A. | 1 in 20 |
| B. | 1 in 10 |
| C. | 1 in 15 |
| D. | NIL |
| Answer» E. | |
| 16212. |
In which period were the foreigners absorbed in large number in the Indian society? |
| A. | The Rajput Period |
| B. | The Mauryan period |
| C. | The Gupta Period |
| D. | The Kushana Period |
| Answer» C. The Gupta Period | |
| 16213. |
Considering the state of hybridization of carbon atoms, find out the molecule among the following which is linear? |
| A. | CH3 -CH2 - CH2 - CH3 |
| B. | CH3 - C º C - CH3 |
| C. | CH3 - CH = CH - CH3 |
| D. | CH2 = CH - CH2 - C º CH |
| Answer» C. CH3 - CH = CH - CH3 | |
| 16214. |
Considering the reaction C(S) O2(g)¾® CO2(g) 393.5 kJ the signs of DH , DS and DG respectively are? |
| A. | +, -, - |
| B. | -, +, + |
| C. | -, -, - |
| D. | -, +, - |
| Answer» E. | |
| 16215. |
Permanent closure in running lines for locations such as 500 metre length on both side approaches of tunnels, tunnel proper, major and important bridges including bridge proper, deep cuttings and high embankments should not be less than______ in length, between two adjoining fish plates. |
| A. | 11 meter |
| B. | 12 meter |
| C. | 13 meter |
| D. | 14 meter |
| Answer» B. 12 meter | |
| 16216. |
Distance block to platform line are fixed at centre to centre distance of_________. |
| A. | 5 meter |
| B. | 15 meter |
| C. | 30 meter |
| D. | 25 meter |
| Answer» D. 25 meter | |
| 16217. |
The most famous city for production of cotton cloth during the period of visit of Hiuen Tsang was ? |
| A. | Banaras |
| B. | Mathura |
| C. | Pataliputra |
| D. | Ujjain |
| Answer» C. Pataliputra | |
| 16218. |
A distinctive and characteristic functional group of fats is? |
| A. | a peptide group |
| B. | an alcoholic group |
| C. | an ester group |
| D. | a ketonic group |
| Answer» D. a ketonic group | |
| 16219. |
The rail dolley shall be protected by a flagman at a distance of _____metre on BG from the rail dolley, on a double line in the direction from which train may approach. |
| A. | 1100 |
| B. | 1200 |
| C. | 1300 |
| D. | 1400 |
| Answer» C. 1300 | |
| 16220. |
Ramachandradeva, the Yadava King of Deogiri, was a contemporary of ? |
| A. | Iltutmish |
| B. | Muhammad Tughlaq |
| C. | Feroz Tughlaq |
| D. | Ala uddin Khilji |
| Answer» E. | |
| 16221. |
Minimum rail section recommended for section having traffic more than20GMTs is _____. |
| A. | 30 kg |
| B. | 50 kg |
| C. | 60 kg |
| D. | 65 kg |
| Answer» D. 65 kg | |
| 16222. |
Archaeological material relating to the period of Sangam literature has been unearthed at ? |
| A. | Arikkamedu |
| B. | Thanjavur |
| C. | Brahmagiri |
| D. | Madurai |
| Answer» C. Brahmagiri | |
| 16223. |
4 moles each of SO2 and O2 gases are allowed to react to form SO3 in a closed vessel. At equilibrium 25% of O2 is used up. The total number of moles of all the gases present at equilibrium is? |
| A. | 6.5 |
| B. | 8.0 |
| C. | 7.0 |
| D. | 2.0 |
| Answer» D. 2.0 | |
| 16224. |
Lubrication of ERC and inserts in corrosion prone areas and platform line isdone once in a ________. |
| A. | Year |
| B. | Month |
| C. | Week |
| D. | Day |
| Answer» B. Month | |
| 16225. |
25 g of each of the following gasses are taken at 27oC and 600 mm pressure. Which of these will have the least volume? |
| A. | HCl |
| B. | HI |
| C. | HBr |
| D. | HF |
| Answer» C. HBr | |
| 16226. |
Sher Shah died while he was fighting in |
| A. | None of these |
| B. | Kalinjar |
| C. | Kalinga |
| D. | Panipat |
| Answer» C. Kalinga | |
| 16227. |
2 gm of metal carbonate is neutralized completely by 100 ml of 0.1 (N) HCI. The equivalent weight of metal carbonate is? |
| A. | 200 |
| B. | 150 |
| C. | 100 |
| D. | 50 |
| Answer» B. 150 | |
| 16228. |
Chloroacetic acid is a stronger acid than acetic acid. This can be explained using ______? |
| A. | + M effect |
| B. | +I effect |
| C. | - M effect |
| D. | - I effect |
| Answer» E. | |
| 16229. |
The Mughal emperor at the time of Ahmed Shah Abduali’s invasion of India was ? |
| A. | Shah Alam II |
| B. | Bahadur Shah II |
| C. | Shah Alam I |
| D. | Bahadur Shahl |
| Answer» B. Bahadur Shah II | |
| 16230. |
Clemmensen reduction of a ketone is carried out in the presence of which of the following? |
| A. | H2 and Pt as catalyst |
| B. | Zn-Hg with HCl |
| C. | Glycol with KOH |
| D. | LiAlH4 |
| Answer» C. Glycol with KOH | |
| 16231. |
CH3CH2Br A B C C D;Dis _____? |
| A. | CH3NH2 |
| B. | CHBr3 |
| C. | CH3Br |
| D. | CH3CONH2 |
| Answer» B. CHBr3 | |
| 16232. |
CH3COOH ln the above reaction Z is? |
| A. | Aldol |
| B. | Butanol |
| C. | Acetal |
| D. | Ketol |
| Answer» B. Butanol | |
| 16233. |
Catalytic dehydrogenation of a primary alcohol gives a? |
| A. | secondary alcohol |
| B. | ketone |
| C. | aldehyde |
| D. | ester |
| Answer» D. ester | |
| 16234. |
During the Indus Valley Civilization period, the dominant number used for weights and measures was ? |
| A. | 16 |
| B. | 12 |
| C. | 8 |
| D. | 6 |
| Answer» B. 12 | |
| 16235. |
Carbon forms two oxides which have different compositions. The equivalent mass of which remains constant? |
| A. | carbon |
| B. | neither carbon nor oxygen |
| C. | oxygen |
| D. | both carbon and oxygen |
| Answer» D. both carbon and oxygen | |
| 16236. |
Benzene reacts with chlorine in sunlight to give a final product? |
| A. | C6H5Cl |
| B. | C6H6Cl6 |
| C. | C6Cl6 |
| D. | CCl4 |
| Answer» C. C6Cl6 | |
| 16237. |
Carbon can reduce ferric oxide to iron at a temperature above 983 K because ______? |
| A. | free energy change for the formation of carbon dioxide is less negative than that for ferric oxide. |
| B. | iron has a higher affinity towards oxygen than carbon. |
| C. | carbon monoxide formed is thermodynamically less stable than ferric oxide. |
| D. | carbon has a higher affinity towards oxidation than iron. |
| Answer» E. | |
| 16238. |
Benzaldehyde and acetone can be best distinguished using ______? |
| A. | sodium hydroxide solution |
| B. | Tollens' reagent |
| C. | Fehling's solution |
| D. | 2, 4-DNPH |
| Answer» C. Fehling's solution | |
| 16239. |
By what factors does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled? |
| A. | 4.0 |
| B. | 2.8 |
| C. | 2.0 |
| D. | 1.4 |
| Answer» E. | |
| 16240. |
The standard emf of a galvanic cell involving 2 moles of electrons in its rodox reaction is 0.59 V. The equilibrium constant for the redox reaction of the cell is ? |
| A. | 105 |
| B. | 1010 |
| C. | 1020 |
| D. | 10 |
| Answer» D. 10 | |
| 16241. |
The time required for 100% completion of a zero order reaction is ? |
| A. | a/k |
| B. | 2k/a |
| C. | ak |
| D. | a/2k |
| Answer» B. 2k/a | |
| 16242. |
The yellow precipitate formed during the chromyl chloride test is chemically ? |
| A. | lead acetate |
| B. | sodium chromate |
| C. | chromic acid |
| D. | lead chromate |
| Answer» E. | |
| 16243. |
The spin only magnetic moment of Fe2 ion (in BM) is approximately ? |
| A. | 5 |
| B. | 6 |
| C. | 4 |
| D. | 7 |
| Answer» B. 6 | |
| 16244. |
The typical range of molar enthalpies for the strongest intermolecular (Hydrogen) bonds is? |
| A. | 200 – 300 kJ |
| B. | 4 – 25 kJ |
| C. | 300 – 500 kJ |
| D. | 4 – 25 J |
| Answer» C. 300 – 500 kJ | |
| 16245. |
Based on the first law of thermodynamics, which one of the following is correct? |
| A. | For an adiabatic process: DU = -w |
| B. | For a cyclic process: q = -w |
| C. | For an isochoric process: DU = -q |
| D. | For an isothermal process: q = +w |
| Answer» C. For an isochoric process: DU = -q | |
| 16246. |
Argon is used? |
| A. | to obtain low temperature |
| B. | in filling airships |
| C. | in radiotherapy for treatment of cancer |
| D. | in high temperature welding |
| Answer» E. | |
| 16247. |
Arrange the following in the increasing order of their basic strengths ?CH3NH2, (CH3)2NH, (CH3)3N, NH3 |
| A. | NH3 u003c (CH3)3N u003c CH3NH2 u003c (CH3)2NH |
| B. | NH3 u003c (CH3)3N u003c (CH3)2NH u003c CH3NH2 |
| C. | CH3NH2 u003c (CH3)2NH u003c (CH3)3N u003c NH3 |
| D. | (CH3)3N u003c NH3 u003c CH3NH2 u003c (CH3)2 NH |
| Answer» B. NH3 u003c (CH3)3N u003c (CH3)2NH u003c CH3NH2 | |
| 16248. |
Arrange the following in the increasing order of their bond order?O2, O, O and O |
| A. | O,O2, O,O |
| B. | O, O, O2 O |
| C. | O2, O, O, O |
| D. | O, O, O, O2 |
| Answer» C. O2, O, O, O | |
| 16249. |
Anisole can be prepared by the action of methyl iodide on sodium phenate. The reaction is called? |
| A. | Wurtz's reaction |
| B. | Fittig's reaction |
| C. | Williamson's reaction |
| D. | Etard's reaction |
| Answer» D. Etard's reaction | |
| 16250. |
An oxygen containing organic compound upon oxidation forms a carboxylic acid as the only organic product with its molecular mass higher by 14 units. The organic compound is ______? |
| A. | a secondary alcohol |
| B. | a ketone |
| C. | an aldehyde |
| D. | a primary alcohol |
| Answer» E. | |