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.
| 7951. |
Steel rods are used in reinforced concrete to increase its __________ strength. |
| A. | shear |
| B. | tensile |
| C. | compressive |
| D. | none of these |
| Answer» C. compressive | |
| 7952. |
Corrosion involves exchange of electrons in __________ corrosion. |
| A. | chemical |
| B. | electrochemical |
| C. | both (a) & (b) |
| D. | neither (a) nor (b) |
| Answer» D. neither (a) nor (b) | |
| 7953. |
Acid proof stoneware |
| A. | has very low strength. |
| B. | cannot be heated. |
| C. | is broken by small temperature changes. |
| D. | all (a), (b) and (c). |
| Answer» E. | |
| 7954. |
Diamagnetic materials are magnetised |
| A. | strongly. |
| B. | only slightly. |
| C. | with eddy currents only. |
| D. | in a direction opposite to that of the applied field. |
| Answer» E. | |
| 7955. |
High degree of toughness is a must for |
| A. | high speed steel |
| B. | shock resisting steel |
| C. | cold work tool steel |
| D. | none of these |
| Answer» C. cold work tool steel | |
| 7956. |
'Hypersil' is a __________ steel. |
| A. | high speed |
| B. | silicon |
| C. | molybdenum |
| D. | tungsten |
| Answer» C. molybdenum | |
| 7957. |
Rotary driers are generally made of |
| A. | cast iron |
| B. | mild steel |
| C. | high silicon iron (14% Si) |
| D. | tin lined with refractory bricks |
| Answer» C. high silicon iron (14% Si) | |
| 7958. |
Presence of high phosphorous in cast iron increases its |
| A. | fluidity |
| B. | melting point |
| C. | shrinkage |
| D. | tensile strength |
| Answer» B. melting point | |
| 7959. |
The phenomenon in which slow extension of material takes place with the time at constant load is called |
| A. | plasticity |
| B. | creep |
| C. | elasticity |
| D. | ductility |
| Answer» C. elasticity | |
| 7960. |
A material capable of undergoing large permanent deformation, when subjected to compression is termed as |
| A. | malleable |
| B. | ductile |
| C. | brittle |
| D. | none of these |
| Answer» B. ductile | |
| 7961. |
__________ is used for examining the macro-structure of a material. |
| A. | Metallurgical microscope |
| B. | Optical microscope |
| C. | X-rays |
| D. | Visual inspection by naked eye |
| Answer» E. | |
| 7962. |
An alloy used as thermocouple material comprises of 40% nickel and 60% copper. It is called |
| A. | constantan |
| B. | kanthal |
| C. | chromel |
| D. | German silver |
| Answer» B. kanthal | |
| 7963. |
Ability of a material to absorb energy in deformation in the plastic range is characterised as its |
| A. | ductility |
| B. | toughness |
| C. | creep |
| D. | resilience |
| Answer» C. creep | |
| 7964. |
Monel alloy is |
| A. | the costliest of all the alloys of nickel. |
| B. | not suitable for making kitchen utensils. |
| C. | used for making steam valves and turbine blades as it resists steam attack at high temperature. |
| D. | not used in cast and wrought forms. |
| Answer» D. not used in cast and wrought forms. | |
| 7965. |
Molybdenum steels containing 0.15 to 0.40% molybdenum |
| A. | are prone to temper brittleness. |
| B. | are used for automobile parts like gears, axle, shaft, bearings etc. |
| C. | have very poor fatigue resistance. |
| D. | do not contain nickel or chromium or both. |
| Answer» C. have very poor fatigue resistance. | |
| 7966. |
Kel-F is a material, which is |
| A. | chemically known as polychlorotrifluor-oethylene (PTFE). |
| B. | having excellent chemical & high temperature resistance (upto 200 C). |
| C. | having elastomeric properties. |
| D. | all (a), (b) and (c). |
| Answer» E. | |
| 7967. |
Sheardising process is used for |
| A. | surface coating. |
| B. | heat treatment of high speed steel. |
| C. | cold working on metals. |
| D. | none of these. |
| Answer» B. heat treatment of high speed steel. | |
| 7968. |
The maximum percentage of chromium that can be added to steel is about |
| A. | 12 |
| B. | 18 |
| C. | 24 |
| D. | 30 |
| Answer» C. 24 | |
| 7969. |
Which of the following is a non-magnetic material ? |
| A. | Cobalt |
| B. | Zinc |
| C. | Nickel |
| D. | None of these |
| Answer» C. Nickel | |
| 7970. |
The material of construction of pressure mills used for squeezing out the juice from sugar cane is |
| A. | stainless steel |
| B. | cast iron |
| C. | mild steel |
| D. | monel |
| Answer» C. mild steel | |
| 7971. |
Concrete tank can be used to store |
| A. | alum |
| B. | ferrous sulphate |
| C. | sulphuric acid |
| D. | saturated brine |
| Answer» E. | |
| 7972. |
Zinc is highly __________ at room temperature. |
| A. | ductile |
| B. | resistant to atmospheric corrosion |
| C. | malleable |
| D. | brittle |
| Answer» C. malleable | |
| 7973. |
Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property ? |
| A. | Silicon |
| B. | Phosphorus |
| C. | Sulphur |
| D. | None of these |
| Answer» B. Phosphorus | |
| 7974. |
Hardest materials so far found is |
| A. | diamond |
| B. | graphite |
| C. | carborundum |
| D. | pumice stone |
| Answer» B. graphite | |
| 7975. |
Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as |
| A. | sheradising |
| B. | parkerising |
| C. | anodising |
| D. | none of these |
| Answer» B. parkerising | |
| 7976. |
Most common stainless steel type 316, which is highly resistant to corrosion contains |
| A. | 16-13% Cr 10-14% Ni and 2-3% Mo. |
| B. | 20-22% Cr, and 8-10% Ni. |
| C. | 2-4% Cr, 22% NI and 2-4% Mo. |
| D. | none of these. |
| Answer» B. 20-22% Cr, and 8-10% Ni. | |
| 7977. |
Which of the following commercial metals is most abundantly found in India ? |
| A. | Copper |
| B. | Aluminium |
| C. | Nickel |
| D. | Zinc |
| Answer» C. Nickel | |
| 7978. |
Tin vessels are corroded by |
| A. | anhydrous ammonia |
| B. | aromatic solvents |
| C. | synthetic detergent solution |
| D. | none of these |
| Answer» E. | |
| 7979. |
Out of the following, copper vessels are the most suitable for the storage of |
| A. | bromine. |
| B. | dry chlorine & dry fluorine. |
| C. | nitric acid (95% and fuming). |
| D. | phosphoric acid (95%) & sulphuric acid (95% and fuming). |
| Answer» C. nitric acid (95% and fuming). | |
| 7980. |
Rubber lined pumps can be used to pump |
| A. | caustic soda |
| B. | chlorinated brine |
| C. | hypochlorous acid |
| D. | all (a), (b) and (c) |
| Answer» E. | |
| 7981. |
The temperature at which new grains are formed in the metal is called the __________ temperature. |
| A. | eutectic |
| B. | recrystallisation |
| C. | upper critical |
| D. | lower critical |
| Answer» C. upper critical | |
| 7982. |
Fatigue failure of a material results from __________ stress. |
| A. | tensile |
| B. | compressive |
| C. | fluctuating |
| D. | none of these. |
| Answer» D. none of these. | |
| 7983. |
Thermoplastic resins are those polymers, which |
| A. | has decreased plasticity at increasing temperature. |
| B. | can not be moulded. |
| C. | easily deform under pressure at high temperature. |
| D. | none of these. |
| Answer» D. none of these. | |
| 7984. |
Molten phthalic anhydride is stored in a/an __________ vessel. |
| A. | aluminium |
| B. | nickel clad steel |
| C. | lead lined steel |
| D. | glass lined steel. |
| Answer» B. nickel clad steel | |
| 7985. |
Fermenter used in the production of pen-cillin by deep fermentation proces is a __________ lined steel vessel |
| A. | rubber |
| B. | monel |
| C. | glass |
| D. | nickel |
| Answer» D. nickel | |
| 7986. |
Hydrochloric acid is __________ corrosive to common metals. |
| A. | least |
| B. | not |
| C. | mildly |
| D. | highly |
| Answer» E. | |
| 7987. |
Spray dryer for evaporating milk to produce milk powder is made of |
| A. | lead lined steel |
| B. | stainless steel |
| C. | aluminium |
| D. | cast iron |
| Answer» C. aluminium | |
| 7988. |
Tank furnace used for melting of glass is made of |
| A. | mild steel |
| B. | cast iron |
| C. | refractory blocks |
| D. | stainless steel |
| Answer» D. stainless steel | |
| 7989. |
Which of the following is not an alloy of nickel and chromium ? |
| A. | Inconel |
| B. | Hastealloy |
| C. | Nimonic alloys |
| D. | Duralumin |
| Answer» E. | |
| 7990. |
Wrought iron is |
| A. | high carbon iron. |
| B. | highly resistance to acid corrosion. |
| C. | malleable & ductile; and hence is used for chain links, hooks & couplings. |
| D. | an alloy of iron, chromium & carbon. |
| Answer» D. an alloy of iron, chromium & carbon. | |
| 7991. |
Perspex is nothing but |
| A. | acrylic sheet |
| B. | an elastomer |
| C. | an alloy of lead and tin |
| D. | aluminium foil clad with bakelite |
| Answer» B. an elastomer | |
| 7992. |
Chromel (Nichrome) is an alloy of |
| A. | chromium and molybdenum. |
| B. | nickel and chromium. |
| C. | molybdenum and nickel. |
| D. | chromium and aluminium. |
| Answer» C. molybdenum and nickel. | |
| 7993. |
Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress. |
| A. | ultimate |
| B. | yield point |
| C. | proof |
| D. | none of these |
| Answer» D. none of these | |
| 7994. |
Which of the following is the hardest material ? |
| A. | Topaz |
| B. | Quartz |
| C. | Corrundum |
| D. | Flourite |
| Answer» D. Flourite | |
| 7995. |
Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system ? |
| A. | High silicon iron, silicon rubber, Kel-F and teflon. |
| B. | Mild steel and stainless steel. |
| C. | Cast iron, tin and aluminium. |
| D. | Copper, nickel and monel. |
| Answer» B. Mild steel and stainless steel. | |
| 7996. |
Caustic soda is transported in __________ lined containers. |
| A. | glass |
| B. | nickel |
| C. | neoprene |
| D. | either (b) or (c) |
| Answer» E. | |
| 7997. |
Gun metal is an alloy of |
| A. | nickel, tin and copper |
| B. | copper, tin and zinc |
| C. | copper, phosphorus and nickel |
| D. | manganese, phosphorus and nickel |
| Answer» C. copper, phosphorus and nickel | |
| 7998. |
Carbon content in steel is __________ percent. |
| A. | 0.1-2 |
| B. | 4-6 |
| C. | 2-4 |
| D. | 0.001-0.01 |
| Answer» B. 4-6 | |
| 7999. |
Biological shield in a nuclear power reactor is made of |
| A. | concrete |
| B. | steel |
| C. | cadmium |
| D. | zircalloy |
| Answer» B. steel | |
| 8000. |
Nitriding of steel is a process for |
| A. | case hardening |
| B. | spheroidising |
| C. | normalising |
| D. | annealing |
| Answer» B. spheroidising | |