MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 1175 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
*/*_Salvage value is the most flexible criteria for analysing a financial investment. 'Salvaging' means? |
| A. | Disposing off a machine/property on as is where is basis |
| B. | Disposing off machine/property, which is no longer useful in the present scenerio |
| C. | Mortgaging the obsolete machine/property |
| D. | Writing off the obsolete machine/ property |
| Answer» C. Mortgaging the obsolete machine/property | |
| 302. |
*/*___________ is not a case hardening process.? |
| A. | Carburising |
| B. | Nitriding |
| C. | Cyaniding |
| D. | Annealing |
| Answer» B. Nitriding | |
| 303. |
*/*_Tempering of a material does not improve its? |
| A. | Machinability |
| B. | Toughness |
| C. | Internal stress level |
| D. | Softness |
| Answer» B. Toughness | |
| 304. |
*/*_Shaft/rotor speed is most accurately measured by a? |
| A. | Frequency counter |
| B. | Tachometer |
| C. | Strobometer |
| D. | Speedometer |
| Answer» D. Speedometer | |
| 305. |
*/*_Yield strength of a polycrystalline metal with an average grain size, d, is proportional to? |
| A. | d1/2 |
| B. | d-1/2 |
| C. | d |
| D. | d-1 |
| Answer» C. d | |
| 306. |
*/*_In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.? |
| A. | 20 |
| B. | 60 |
| C. | 120 |
| D. | ‚à û |
| Answer» E. | |
| 307. |
*/*_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 | |
| 308. |
*/*_In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just like in liquid. Which of the following is an amorphous material?? |
| A. | Tin |
| B. | Lead |
| C. | Zinc |
| D. | Glass |
| Answer» E. | |
| 309. |
*/*_The activity co-efficient of the solute in a dilute solution? |
| A. | Decreases with the increase of concentration of the solute |
| B. | Increases with the increase of concentration of the solute |
| C. | Remains constant |
| D. | Is unity at infinite dilution |
| Answer» D. Is unity at infinite dilution | |
| 310. |
*/*_Fatigue life is expected to increase by? |
| A. | Increasing the size of the sample |
| B. | Smooth polishing of the surface of the sample |
| C. | Having compressive residual stresses at the surface |
| D. | Having tensile residual stresses at the surface |
| Answer» D. Having tensile residual stresses at the surface | |
| 311. |
*/*_Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of? |
| A. | Steel |
| B. | Glass wood |
| C. | Copper |
| D. | Fireclay bricks |
| Answer» C. Copper | |
| 312. |
*/*_The lightest non-inflammable gas is? |
| A. | H‚ÇÇ |
| B. | He |
| C. | Ar |
| D. | O‚ÇÇ |
| Answer» C. Ar | |
| 313. |
*/*_Air intake for an air compressor should be preferably taken from? |
| A. | A site, where cooling towers are located nearby |
| B. | A site, where open coal yard in located nearby |
| C. | An air conditioned room maintained at a temperature of 18°C |
| D. | An outside atmosphere at 10°C |
| Answer» E. | |
| 314. |
*/*_Tin based white metals are used, where bearings are subjected to? |
| A. | High pressure & load |
| B. | Low pressure & load |
| C. | High temperature |
| D. | Large surface wear |
| Answer» B. Low pressure & load | |
| 315. |
*/*_Gross & Net calorific values will be the same for? |
| A. | Methane |
| B. | Propane |
| C. | Carbon monoxide |
| D. | Hydrogen |
| Answer» D. Hydrogen | |
| 316. |
*/*_Which of the following is used to produce draught in the locomotive boilers ?? |
| A. | Chimney |
| B. | Induced draught fan |
| C. | Forced draught fan |
| D. | Steam jet arrangement |
| Answer» E. | |
| 317. |
*/*_If a solid is compressed adiabatically in its elastic range, its __________ remains constat? |
| A. | Internal energy |
| B. | Enthalpy |
| C. | Entropy |
| D. | Temperature |
| Answer» D. Temperature | |
| 318. |
*/*_Which of the following approaches the ideal gas behaviour most closely?? |
| A. | Wet steam |
| B. | Saturated steam |
| C. | Superheated steam |
| D. | Saturated water |
| Answer» D. Saturated water | |
| 319. |
*/*_Laser is a device to produce? |
| A. | Gamma rays |
| B. | Microwaves |
| C. | A beam of white light |
| D. | A beam of coherent light |
| Answer» E. | |
| 320. |
*/*_Property of a material to resist a tensile force without giving away is a measure of its? |
| A. | Stiffness |
| B. | Toughness |
| C. | Resilience |
| D. | Tenacity |
| Answer» E. | |
| 321. |
*/*_Hot working of lead is carried out at? |
| A. | 75°C |
| B. | 373°K |
| C. | 150°C |
| D. | Room temperature |
| Answer» C. 150¬¨‚àûC | |
| 322. |
*/*_A solution which resists change in its pH value on addition of acid/alkali is called the __________ solution.? |
| A. | Neutral |
| B. | Ideal |
| C. | Buffer |
| D. | Zero pH |
| Answer» D. Zero pH | |
| 323. |
*/*_Larger length & diameter water pipes are made by? |
| A. | Electrical resistance welding |
| B. | Die casting |
| C. | Semi-centrifugal casting |
| D. | Continuous casting |
| Answer» D. Continuous casting | |
| 324. |
*/*_Slight displacement of a floating body in liquid makes it to oscillate about its? |
| A. | Centre of pressure |
| B. | Centre of gravity |
| C. | Metacentre |
| D. | Centre of pressure |
| Answer» D. Centre of pressure | |
| 325. |
*/*_Spheriodising of a material is a/an __________ process.? |
| A. | Normalising |
| B. | Annealing |
| C. | Tempering |
| D. | Hardening |
| Answer» C. Tempering | |
| 326. |
*/*_Wave length of X-rays is about 1 angstron, however it can not pass through a sheet of? |
| A. | Paper |
| B. | Cloth |
| C. | Lead |
| D. | Aluminium |
| Answer» D. Aluminium | |
| 327. |
*/*_Which of the following alloying elements reduces the formation of iron sulphide in steel?? |
| A. | Cobalt |
| B. | Nickel |
| C. | Manganese |
| D. | Vanadium |
| Answer» C. Manganese | |
| 328. |
*/*_The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.? |
| A. | 0.5 |
| B. | 3 |
| C. | 10 |
| D. | 25 |
| Answer» C. 10 | |
| 329. |
*/*_An ingot is hot forged to a 60% reduction in cross-section area. The percentage reduction in the volume for the above process is? |
| A. | 0 |
| B. | 60 |
| C. | 30 |
| D. | 20 |
| Answer» B. 60 | |
| 330. |
*/*_The reductant used in the extraction of magnesium from calcined dolomite via Pidgeon's process is? |
| A. | Pure carbon |
| B. | Pure silicon |
| C. | Ferro silicon |
| D. | Ferro manganese |
| Answer» D. Ferro manganese | |
| 331. |
*/*_Coating of zinc over steel is known as? |
| A. | Cladding |
| B. | Galvanising |
| C. | Anodising |
| D. | Passivation |
| Answer» C. Anodising | |
| 332. |
*/*_The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.? |
| A. | 768 |
| B. | 908 |
| C. | 1400 |
| D. | 1539 |
| Answer» B. 908 | |
| 333. |
*/*_The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the? |
| A. | Ability to absorb shock |
| B. | Capacity to store energy |
| C. | Ratio of the wire & coil diameters |
| D. | Load to produce unit deflection |
| Answer» E. | |
| 334. |
*/*_Which of the following transducers is most commonly used for the measurement of shock and vibration ?? |
| A. | Linear variable differential transducer (LVDT) |
| B. | Dial gauge |
| C. | Accelerometer |
| D. | None of these |
| Answer» D. None of these | |
| 335. |
*/*_Flywheel is provided in a machine to? |
| A. | Provide structural strength to the shaft |
| B. | Smoothen the power impluses |
| C. | Help in quick starting of the machine |
| D. | None of these |
| Answer» C. Help in quick starting of the machine | |
| 336. |
*/*___________ has a negative co-efficient of linear expansion.? |
| A. | Iron |
| B. | Copper |
| C. | Rubber |
| D. | Nickel |
| Answer» C. Rubber | |
| 337. |
*/*_Value of a material is usually considered as a relationship between? |
| A. | Cost and profit |
| B. | Utility and appearance |
| C. | Utility and cost |
| D. | Reliability and utility |
| Answer» D. Reliability and utility | |
| 338. |
*/*_If Reynolds number is greater than 1, then the? |
| A. | Viscous force is larger than the inertia force |
| B. | Inertia force is larger than the viscous force |
| C. | Inertia force is larger than the surface tension force |
| D. | Inertia force is larger than the gravitational force |
| Answer» C. Inertia force is larger than the surface tension force | |
| 339. |
*/*_If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity? |
| A. | Is trebled |
| B. | Remains unchanged |
| C. | Decreases by a factor of ‚à ö3 |
| D. | Decreases by a factor of 1/3 |
| Answer» C. Decreases by a factor of ‚Äö√ √∂3 | |
| 340. |
*/*_When a copper ball is heated, the largest percentage increase will be in its? |
| A. | Radius |
| B. | Area |
| C. | Mass |
| D. | Volume |
| Answer» E. | |
| 341. |
*/*_Which of the following is termed as the boiler mounting ?? |
| A. | Superheater |
| B. | Economiser |
| C. | Blow off cock |
| D. | Feed pump |
| Answer» D. Feed pump | |
| 342. |
*/*_A controller action in which there is a con-tinous relation between the values of controlled variable and the rate of change of conrolled output signal is called the __________ action.? |
| A. | Proportional |
| B. | Integral |
| C. | Derivative |
| D. | None of these |
| Answer» C. Derivative | |
| 343. |
*/*_Materials having __________ lattice structure are usually the most ductile.? |
| A. | Body centred cubic (bcc) |
| B. | Hexagonal close packed (hcp) |
| C. | Face centred cubic (fcc) |
| D. | None of these |
| Answer» D. None of these | |
| 344. |
*/*_Specific heat of an ideal gas depends upon its? |
| A. | Molecular weight |
| B. | Pressure |
| C. | Temperature |
| D. | Volume |
| Answer» D. Volume | |
| 345. |
*/*_Free oxygen is removed from boiler feed water, because it? |
| A. | Reduces heat transfer co-efficient |
| B. | Is corrosive |
| C. | Causes explosion |
| D. | None of these |
| Answer» C. Causes explosion | |
| 346. |
*/*_A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/seC‚ÇÇ is? |
| A. | 8.82 |
| B. | 9.81 |
| C. | 10.88 |
| D. | 0.95 |
| Answer» B. 9.81 | |
| 347. |
*/*_Alloys having more than 80% copper are generally more? |
| A. | Abrasion resistant |
| B. | Corrosion resistant |
| C. | Prone to season cracking |
| D. | Machinable |
| Answer» C. Prone to season cracking | |
| 348. |
*/*_Circulation of liquid metal (i.e. molten sodium) in a liquid metal cooled nuclear reactor is done by a/an __________ pump.? |
| A. | Electromagnetic |
| B. | Axial flow |
| C. | Diaphragm |
| D. | Reciprocating |
| Answer» B. Axial flow | |
| 349. |
*/*_The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by? |
| A. | Decreasing the surface area of the electrodes |
| B. | Increasing the concentration of zinc sulphate solution |
| C. | Increasing the surface area of the electrodes |
| D. | Increasing the concentration of copper sulphate solution |
| Answer» E. | |
| 350. |
*/*_Function of feed check valve in a boiler is to? |
| A. | Facilitate circulation of high pressure feed water |
| B. | Check the water level in the boiler drum |
| C. | Prevent the back flow of water |
| D. | Regulate the water flow to boiler |
| Answer» D. Regulate the water flow to boiler | |