MCQOPTIONS
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MCQOPTIONS
This section includes 8247 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 7401. |
In a good rimming steel |
| A. | carbon and silicon should be low. |
| B. | silicon should be low but carbon should be high. |
| C. | both silicon & carbon should be high. |
| D. | silicon should be high but carbon should be low. |
| Answer» B. silicon should be low but carbon should be high. | |
| 7402. |
Cold chiesel & hammers are made of |
| A. | high speed steel |
| B. | high carbon steel |
| C. | forged steel |
| D. | mild steel |
| Answer» C. forged steel | |
| 7403. |
Which of the following does not lower the surface tension of liquids ? |
| A. | Fat |
| B. | Soap |
| C. | Detergent |
| D. | Surfactant |
| Answer» B. Soap | |
| 7404. |
__________ property of a material is determined by the Herbert Pendulum device. |
| A. | Hardness |
| B. | Tensile |
| C. | Toughness |
| D. | Compressive |
| Answer» B. Tensile | |
| 7405. |
Cathodic protection is widely used in controlling corrosion in |
| A. | high pressure vessels. |
| B. | marine structure & underground pipelines. |
| C. | overhead fuel gas pipelines. |
| D. | overhead water pipelines. |
| Answer» C. overhead fuel gas pipelines. | |
| 7406. |
Methyl orange indicator turns |
| A. | orange yellow in alkaline medium. |
| B. | orange yellow in acidic medium. |
| C. | colourless in acidic medium. |
| D. | colourless in basic medium. |
| Answer» B. orange yellow in acidic medium. | |
| 7407. |
Which of the following has the least oili-ness ? |
| A. | Mineral oils |
| B. | Vegetable oils |
| C. | Greases |
| D. | Animal oils |
| Answer» B. Vegetable oils | |
| 7408. |
Surface finish of casting does not depend upon the |
| A. | sand fineness. |
| B. | pattern finish. |
| C. | mould dressings. |
| D. | metal temperature. |
| Answer» E. | |
| 7409. |
The fatigue resistance of a material is improved by the following technique. |
| A. | Anodising |
| B. | Carburising |
| C. | Ion nitriding |
| D. | Shot peening |
| Answer» E. | |
| 7410. |
Increase in temperature, in general results in the |
| A. | decrease in the viscosities of both liquids & gases. |
| B. | increase in the viscosities of both liquids & gases. |
| C. | increase in the viscosity of liquids and decrease in that of gases. |
| D. | decrease in the viscosity of liquids and increase in that of gases. |
| Answer» E. | |
| 7411. |
Which of the following can be manufactured using powder metallurgy techniques? |
| A. | Brake linings |
| B. | Bearings |
| C. | Carbide tool tips |
| D. | All 'a', 'b' and 'c'. |
| Answer» E. | |
| 7412. |
Removal of non-condensables from steam or other vapour is termed as the __________ process. |
| A. | condensation |
| B. | dearation |
| C. | scavanging |
| D. | exhaust |
| Answer» C. scavanging | |
| 7413. |
Cold heading or upsetting is categorised as the __________ process. |
| A. | extrusion |
| B. | bending |
| C. | rolling |
| D. | forging |
| Answer» E. | |
| 7414. |
Plants produce carbohydrates from the CO2 present in the atmosphere by |
| A. | polymerisation. |
| B. | photochemical reaction. |
| C. | oxidation. |
| D. | none of these. |
| Answer» C. oxidation. | |
| 7415. |
Which of the following is not used as an alloying element in steel used for making permanent magnetic material ? |
| A. | Tungsten |
| B. | Chromium |
| C. | Vanadium |
| D. | Cobalt |
| Answer» D. Cobalt | |
| 7416. |
Which of the following represents the correct time-temperature curve when a block of metal is heated above room temperature & then left to cool in the room following Newton's law of cooling in which the rate of temperature drop will go on decreasing with the passage of time. |
| A. | <img src="/_files/images/chemical-engineering/chemical-engineering-basics/769-951-1.png"> |
| B. | <img src="/_files/images/chemical-engineering/chemical-engineering-basics/769-951-2.png"> |
| C. | <img src="/_files/images/chemical-engineering/chemical-engineering-basics/769-951-3.png"> |
| D. | <img src="/_files/images/chemical-engineering/chemical-engineering-basics/769-951-4.png"> |
| Answer» D. <img src="/_files/images/chemical-engineering/chemical-engineering-basics/769-951-4.png"> | |
| 7417. |
Pick out the wrong statement about coating/electroplating of metals. |
| A. | Phosphate coating is used as an excellent base for paints & enamels. |
| B. | Phosphate coating is less corrosion resistant than chromate coating. |
| C. | The base metal to be electroplated is normally made the cathode of the electrolytic cell and coating metal is made the anode. |
| D. | Calorising is the process of coating steel with chromium. |
| Answer» E. | |
| 7418. |
Brinell hardness number (BHN) of a material is a number, which has |
| A. | no dimension. |
| B. | unit of length. |
| C. | unity of force/area. |
| D. | unit of force/length. |
| Answer» D. unit of force/length. | |
| 7419. |
Vanadium addition to steel improves its |
| A. | high temperature oxidation resistance. |
| B. | fatigue strength. |
| C. | heat treatability by quenching. |
| D. | hardenability. |
| Answer» E. | |
| 7420. |
A gas having a negative Joule-Thompson co-efficient, when throttled, will |
| A. | become hotter. |
| B. | become cooler. |
| C. | remain unchanged. |
| D. | liquefy. |
| Answer» B. become cooler. | |
| 7421. |
Annealing of metal does not |
| A. | precede its wire drawing. |
| B. | induce softness and removes stresses & dissolved gases. |
| C. | refine the crystalline structure & produce a definite microstructure. |
| D. | alter toughness, ductility and magnetic & electrical or other physical properties. |
| Answer» B. induce softness and removes stresses & dissolved gases. | |
| 7422. |
Which of the following is a common constituent of both paint and oil varnish ? |
| A. | Extender |
| B. | Pigment |
| C. | Thinner |
| D. | Drying oil |
| Answer» E. | |
| 7423. |
Lithium is a useful alloying addition to aluminium, because it |
| A. | is cheap. |
| B. | imparts solid solution strengthening. |
| C. | lowers density and contributes to age hardening. |
| D. | improves the corrosion resistance of aluminium. |
| Answer» E. | |
| 7424. |
Blow off cock is provided in steam boiler to |
| A. | guard the boiler in case of abnormal rise in steam pressure. |
| B. | drain out water and sludge during its repair. |
| C. | regulate the supply of water in boiler. |
| D. | put out the fire in the furnace when the water level in the boiler falls to unsafe limit. |
| Answer» C. regulate the supply of water in boiler. | |
| 7425. |
Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium |
| A. | nitrate |
| B. | sulphate |
| C. | carbonate |
| D. | chloride |
| Answer» B. sulphate | |
| 7426. |
A material subjected __________ must have high resilience. |
| A. | shockloading |
| B. | vibration |
| C. | fatigue |
| D. | tension |
| Answer» B. vibration | |
| 7427. |
Triple point of water is |
| A. | 0 F |
| B. | 492 R |
| C. | 0 K |
| D. | -273 C |
| Answer» B. 492 R | |
| 7428. |
__________ pipe is the most suitable for carrying sanitary drainage. |
| A. | stainless steel |
| B. | Reinforced cement concrete |
| C. | Cast iron |
| D. | Asbestos cement |
| Answer» D. Asbestos cement | |
| 7429. |
Liquor poisoning generally occurs due to the presence of __________ in it. |
| A. | ethyl alcohol |
| B. | impurities |
| C. | methyl alcohol |
| D. | carbonic acid |
| Answer» D. carbonic acid | |
| 7430. |
When a tuning fork vibrates, the waves produced in the fork are |
| A. | stationary |
| B. | longitudinal |
| C. | progressive |
| D. | transverse |
| Answer» C. progressive | |
| 7431. |
In continuous casting process, graphite moulds are used with a view to providing |
| A. | heat resisting medium. |
| B. | self lubricating qualities. |
| C. | non-wetting surfaces. |
| D. | chilling effect. |
| Answer» C. non-wetting surfaces. | |
| 7432. |
Energy required to compress a hot gas as compared to cold gas will be |
| A. | more. |
| B. | less. |
| C. | same. |
| D. | more or less depending upon the nature of the gas. |
| Answer» B. less. | |
| 7433. |
In the commercial production of which of the following metals, matallothermic reduction is used ? |
| A. | Copper |
| B. | Zinc |
| C. | Zirconium |
| D. | Nickel |
| Answer» C. Zirconium | |
| 7434. |
New water wells are disinfected with chlorine in the form of |
| A. | sodium chloride |
| B. | sodium hypochlorate |
| C. | bleaching powder |
| D. | aluminium chloride |
| Answer» D. aluminium chloride | |
| 7435. |
In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will |
| A. | decrease gradually. |
| B. | increase gradually. |
| C. | increase rapidly. |
| D. | remain constant. |
| Answer» C. increase rapidly. | |
| 7436. |
In a furnace with heating element temperature at 1700 C, the dominant machanism of heat transfer will be |
| A. | conduction |
| B. | radiation |
| C. | natural convection |
| D. | forced convection |
| Answer» C. natural convection | |
| 7437. |
Solution loss reaction occurs |
| A. | in the blast furnace shaft. |
| B. | during pretreatment of hot metal. |
| C. | in the L.D. process. |
| D. | during deoxidation in the ladle. |
| Answer» B. during pretreatment of hot metal. | |
| 7438. |
Fatigue limit of a material should not be increased by |
| A. | shot peening |
| B. | surface decarburisation |
| C. | understressing |
| D. | cold working |
| Answer» C. understressing | |
| 7439. |
For a fixed cross-sectional area, the most economical channel section has maximum |
| A. | wetted perimeter. |
| B. | fluid discharge rate. |
| C. | fluid velocity. |
| D. | depth of flowing fluid. |
| Answer» C. fluid velocity. | |
| 7440. |
Pellets are not as popular a burden as sinter in the iron blast furnace, because of their |
| A. | shape. |
| B. | swelling tendency. |
| C. | poor reducibility. |
| D. | low mechanical strength. |
| Answer» C. poor reducibility. | |
| 7441. |
A material lacking in toughness is usually termed as |
| A. | plastic |
| B. | malleable |
| C. | brittle |
| D. | ductile |
| Answer» D. ductile | |
| 7442. |
The basic constituent of vegetable oils is |
| A. | triglyceride |
| B. | fatty acids |
| C. | fatty alcohol |
| D. | mono esters |
| Answer» C. fatty alcohol | |
| 7443. |
Which of the following terminology is used for the temperature at which new grains are formed in a metal ? |
| A. | Eutectic temperature. |
| B. | Lower critical temperature. |
| C. | Recrystallisation temperature. |
| D. | Upper critical temperature. |
| Answer» D. Upper critical temperature. | |
| 7444. |
A form of stress corrosion failure termed as 'season cracking' is generally observed in |
| A. | thermosetting polymers. |
| B. | high carbon steels. |
| C. | brasses. |
| D. | borosilicate glasses. |
| Answer» D. borosilicate glasses. | |
| 7445. |
Consumable electrodes are used in the __________ welding. |
| A. | gas |
| B. | arc |
| C. | thermit |
| D. | resistance |
| Answer» C. thermit | |
| 7446. |
Magnesium is present in |
| A. | haemoglobin |
| B. | chlorophyll |
| C. | hypo solution |
| D. | none of these |
| Answer» C. hypo solution | |
| 7447. |
The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding. |
| A. | runner |
| B. | cylinder |
| C. | mold |
| D. | none of these |
| Answer» B. cylinder | |
| 7448. |
Which of the following fertilisers is used as a cattle feed? |
| A. | Urea |
| B. | Calcium ammonium nitrate |
| C. | Superphosphate |
| D. | Ammonium sulphate |
| Answer» B. Calcium ammonium nitrate | |
| 7449. |
Steam reforming of naphtha produces ammonia synthesis gas. This is a/an __________ process. |
| A. | autocatalytic |
| B. | endothermic |
| C. | exothermic |
| D. | non-catalytic |
| Answer» C. exothermic | |
| 7450. |
With increases in pressure, the conversion of ammonium carbamate into urea |
| A. | increases |
| B. | decreases |
| C. | remains unaltered |
| D. | can either increase or decrease depends on biuret content |
| Answer» B. decreases | |