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.
| 7901. |
Hydrochloric acid is stored in a__vessel. |
| A. | lead lined steel |
| B. | rubber lined steel |
| C. | stainless steel |
| D. | cast iron |
| Answer» C. stainless steel | |
| 7902. |
Ferric stainless steels compared to austenitic stainless steels |
| A. | have lower corrosion resistance. |
| B. | are harder to fabricate. |
| C. | are less ductile and hence less suitable for cold pressing. |
| D. | all (a), (b) and (c). |
| Answer» E. | |
| 7903. |
Liners of a ball mill are never made of |
| A. | lead |
| B. | alloy steel |
| C. | rubber or ceramic material |
| D. | cast iron |
| Answer» B. alloy steel | |
| 7904. |
__________ iron is produced, when molten pig iron is allowed to cool gradually. |
| A. | White cast |
| B. | Grey cast |
| C. | Wrought |
| D. | none of these |
| Answer» C. Wrought | |
| 7905. |
Condenser tubes are not made of |
| A. | cartridge brass |
| B. | muntz brass |
| C. | wood metal |
| D. | aluminium brass alloy |
| Answer» D. aluminium brass alloy | |
| 7906. |
Tin in its pure form is used for making |
| A. | cans for food packing. |
| B. | collapsible tubes for toilet preparations. |
| C. | foil for wrapping cheese. |
| D. | all (a), (b) and (c). |
| Answer» E. | |
| 7907. |
Addition of __________ in steel is helpful in increasing the depth of hardness. |
| A. | chromium |
| B. | sulphur |
| C. | vanadium |
| D. | tungsten |
| Answer» B. sulphur | |
| 7908. |
Carbon tetrachloride can be stored in a storage vessel made of |
| A. | high silicon iron (14% Si) |
| B. | tin |
| C. | stainless steel |
| D. | all (a), (b) and (c) |
| Answer» E. | |
| 7909. |
The process of coating steel sheets by zinc to improve its corrosion resistance is called |
| A. | calorising |
| B. | galvanising |
| C. | zincification |
| D. | tempering |
| Answer» C. zincification | |
| 7910. |
__________ does not contain copper as an alloying element, |
| A. | Nichrome |
| B. | Manganin |
| C. | Perminivar |
| D. | Monel metal |
| Answer» B. Manganin | |
| 7911. |
Reactor used in the production of polyvinyl chloride (PVC) is made of |
| A. | nickel or glass lined steel |
| B. | aluminium |
| C. | tantalum |
| D. | lead |
| Answer» B. aluminium | |
| 7912. |
__________ is added in low carbon steel to raise its yield point. |
| A. | Sulphur |
| B. | Phosphorous |
| C. | Silicon |
| D. | Manganese |
| Answer» E. | |
| 7913. |
Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its |
| A. | corrosion resistance |
| B. | tensile strength |
| C. | machinability |
| D. | compressive strength |
| Answer» D. compressive strength | |
| 7914. |
Maximum consumption of copper is in |
| A. | utensil manufacture. |
| B. | electrical industry. |
| C. | industrial equipment manufacture. |
| D. | small scale industries. |
| Answer» C. industrial equipment manufacture. | |
| 7915. |
Maximum carbon content in cast iron is __________ percent. |
| A. | 3.8 |
| B. | 5.2 |
| C. | 4.8 |
| D. | 4.3 |
| Answer» E. | |
| 7916. |
Manganese in steel affects its |
| A. | ductility |
| B. | tensile strength |
| C. | hardness |
| D. | none of these |
| Answer» C. hardness | |
| 7917. |
Lead lined equipments & vessels are suitable for handling |
| A. | hydrochloric acid (10%). |
| B. | nitric acid. |
| C. | sulphuric acid upto 60 C. |
| D. | all (a), (b) and (c). |
| Answer» D. all (a), (b) and (c). | |
| 7918. |
__________ is used for determining the tensile strength of steels. |
| A. | Hydraulic press |
| B. | Universal testing machine |
| C. | Mechanical press |
| D. | none of these |
| Answer» C. Mechanical press | |
| 7919. |
Mild steel storage vessels are suitable for the storage of |
| A. | anhydrous ammonia |
| B. | fatty acids |
| C. | hydrochloric acid (95%) |
| D. | sulphuric acid (25%) |
| Answer» B. fatty acids | |
| 7920. |
Mild steel is a/an __________ steel. |
| A. | low carbon |
| B. | medium carbon |
| C. | high carbon |
| D. | high alloy |
| Answer» B. medium carbon | |
| 7921. |
Hardened steel is softened by |
| A. | normalising |
| B. | tempering |
| C. | annealing |
| D. | carburising |
| Answer» C. annealing | |
| 7922. |
Which of the following is not shipped in mild steel containers ? |
| A. | Acetone |
| B. | Ammonia |
| C. | Ethyl alcohol |
| D. | Formic acid |
| Answer» E. | |
| 7923. |
Clock pendulums are usually made of __________ steel. |
| A. | high speed |
| B. | stainless |
| C. | heat resisting |
| D. | none of these |
| Answer» E. | |
| 7924. |
Which of the following is produced by addition polymerisation ? |
| A. | Polybutadiene |
| B. | Phenol formaldehyde |
| C. | Urea-formaldehyde |
| D. | Dacron |
| Answer» B. Phenol formaldehyde | |
| 7925. |
With increase in the carbon percentage in the steel, its |
| A. | hardness increases. |
| B. | ductility reduces. |
| C. | tensile strength increases. |
| D. | all (a), (b) and (c). |
| Answer» E. | |
| 7926. |
Spark plugs are made of |
| A. | high alumina ceramic |
| B. | metallic carbides |
| C. | corundum |
| D. | carborundum |
| Answer» B. metallic carbides | |
| 7927. |
The high expansion metal normally used in the bimetallic thermometer is __________ temperature measurement. |
| A. | brass for low |
| B. | nickel alloys for high |
| C. | both'a' & 'b' |
| D. | aluminium for all |
| Answer» D. aluminium for all | |
| 7928. |
Which of the following has the least value of ultimate tensile strength (UTS) ? |
| A. | Medium carbon steel |
| B. | High carbon steel |
| C. | Cast iron |
| D. | Wrought iron |
| Answer» D. Wrought iron | |
| 7929. |
__________ does not contain tin as an alloying material. |
| A. | Brass |
| B. | Pewter |
| C. | Solder |
| D. | Babbit metal |
| Answer» B. Pewter | |
| 7930. |
Cast iron is having very high |
| A. | proximity between its elastic limit and ultimate breaking strength. |
| B. | ductility. |
| C. | tensile strength. |
| D. | all (a), (b) and (c). |
| Answer» B. ductility. | |
| 7931. |
Inconel is an alloy of |
| A. | tin, zinc and nickel |
| B. | iron, nickel and chromium |
| C. | copper and nickel |
| D. | copper and tin |
| Answer» C. copper and nickel | |
| 7932. |
Polymerisation reactor used for the production of styrene butadiene rubber (SBR) is made of |
| A. | cast iron |
| B. | stainless steel or glass lined vessel |
| C. | karbate |
| D. | wrought iron |
| Answer» C. karbate | |
| 7933. |
A metallic alloy in general as compared to their pure metal components is |
| A. | more corrosion resistant. |
| B. | having higher melting point. |
| C. | having lower hardness, reactivity and fusibility. |
| D. | having lower electrical conductivity. |
| Answer» B. having higher melting point. | |
| 7934. |
Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with |
| A. | acidic refractory |
| B. | rubber |
| C. | karbate |
| D. | lead or acid-proof bricks |
| Answer» E. | |
| 7935. |
Ceramic materials fabrication can not be done by |
| A. | welding |
| B. | slip casting |
| C. | extrusion |
| D. | plastic pressing |
| Answer» B. slip casting | |
| 7936. |
Cast iron is |
| A. | used for making shock resisting parts. |
| B. | manufactured in cupola and is brittle. |
| C. | having compressive strength more than its tensile strength. |
| D. | all (a), (b) & (c) |
| Answer» E. | |
| 7937. |
Which of the following has no effect on the carbide forming tendency in steels ? |
| A. | Molybdenum |
| B. | Phosphorus |
| C. | Chromium |
| D. | Vanadium |
| Answer» C. Chromium | |
| 7938. |
Approximate value of the modulus of elasticity for steel is about __________ x l06kg/cm2. |
| A. | 0.5 |
| B. | 2 |
| C. | 40 |
| D. | 75 |
| Answer» C. 40 | |
| 7939. |
Which has the maximum melting point out of the following ? |
| A. | Steel |
| B. | Cast iron |
| C. | Stainless steel |
| D. | Wrought iron |
| Answer» E. | |
| 7940. |
Galvanising (i.e., zinc coating) of steel sheets is done to |
| A. | prevent its rusting by contact with corrosive atmosphere. |
| B. | protect the base metal by cathodic protection. |
| C. | both(a) & (b). |
| D. | neither (a) nor (b). |
| Answer» D. neither (a) nor (b). | |
| 7941. |
Polythene (low or high density) containers are not corroded by |
| A. | sulphuric acid (10%) at room temperature. |
| B. | nitric acid (95%) at room temperature. |
| C. | sulphur trioxide at 60 C. |
| D. | any of these. |
| Answer» B. nitric acid (95%) at room temperature. | |
| 7942. |
Bronze is an alloy of copper and |
| A. | lead |
| B. | tin |
| C. | nickel |
| D. | zinc |
| Answer» C. nickel | |
| 7943. |
Which of the following exercises most powerful influence on the mechanical properties of steel ? |
| A. | Manganese |
| B. | Carbon |
| C. | Phosphorous |
| D. | Silicon |
| Answer» C. Phosphorous | |
| 7944. |
Percentage of silver in German silver is |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 0 |
| Answer» E. | |
| 7945. |
Balls in a ball mill are usually made of |
| A. | steel |
| B. | cast iron |
| C. | stainless steel |
| D. | bronze |
| Answer» B. cast iron | |
| 7946. |
Material of construction of pipe generally used for conveying water in India is |
| A. | stainless steel |
| B. | cast iron |
| C. | wrought iron |
| D. | lead lined steel |
| Answer» C. wrought iron | |
| 7947. |
Which of the following is the softest material ? |
| A. | Quartz |
| B. | Calcite |
| C. | Corrundum |
| D. | Flourite |
| Answer» C. Corrundum | |
| 7948. |
Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the |
| A. | ultimate tensile strength (U.T.S.) |
| B. | endurance limit |
| C. | elastic limit |
| D. | none of these |
| Answer» C. elastic limit | |
| 7949. |
Bog iron used for the adsorption of H2S from coke oven gas is |
| A. | an intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide). |
| B. | iron impregnated with resin (usually bakelite). |
| C. | carbon free iron. |
| D. | none of these. |
| Answer» B. iron impregnated with resin (usually bakelite). | |
| 7950. |
Wrought iron is a suitable material of construction for handling __________ solutions. |
| A. | dilute acidic |
| B. | concentrated acidic |
| C. | alkalis & alkaline |
| D. | none of these |
| Answer» D. none of these | |