MCQOPTIONS
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MCQOPTIONS
This section includes 400 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Presence of silicon in steel_____________________? |
| A. | Is in the form of free Si |
| B. | Indicates that steel is not deoxidised properly |
| C. | Decreases the blow holes formation tendency in castings |
| D. | None of these |
| Answer» D. None of these | |
| 102. |
Presence of nitrogen in steel___________________? |
| A. | Makes it brittle |
| B. | Increases its strength |
| C. | Increases its hardness |
| D. | Is desirable |
| Answer» B. Increases its strength | |
| 103. |
Presence of nickel in steel improves its_________________? |
| A. | Corrosion resistance |
| B. | Cutting ability |
| C. | Wear resistance |
| D. | All A., B. and C. |
| Answer» B. Cutting ability | |
| 104. |
Presence of manganese in alloy steel improves its___________________? |
| A. | Corrosion resistance |
| B. | Cutting ability |
| C. | Abrasion resistance & toughness |
| D. | Elasticity & creep resistance |
| Answer» D. Elasticity & creep resistance | |
| 105. |
Presence of high phosphorous in cast iron increases its____________________? |
| A. | Fluidity |
| B. | Melting point |
| C. | Shrinkage |
| D. | Tensile strength |
| Answer» B. Melting point | |
| 106. |
Presence of high amount of silicon in cast iron________________? |
| A. | Suppresses the decomposition of Fe3C |
| B. | Increases the formation of graphite |
| C. | Increases the contraction of the metal |
| D. | Reduces its fluidity |
| Answer» C. Increases the contraction of the metal | |
| 107. |
Presence of even very minute amount (say 0.1%) of ______________ in copper, reduces its electrical conductivity very seriously? |
| A. | Bismuth |
| B. | Arsenic |
| C. | Antimony |
| D. | Both B. and C. |
| Answer» E. | |
| 108. |
Presence of even 0.005% of _____________ in copper makes it highly brittle, rendering it useless for wire-drawing? |
| A. | Oxygen |
| B. | Arsenic |
| C. | Antimony |
| D. | Bismuth |
| Answer» E. | |
| 109. |
Presence of cobalt in steel improves its____________________? |
| A. | Cutting ability |
| B. | Corrosion resistance |
| C. | Tensile strength |
| D. | None of these |
| Answer» B. Corrosion resistance | |
| 110. |
Presence of 0.3 to 0.5% arsenic in copper increases its____________________? |
| A. | Ductility |
| B. | Malleability |
| C. | Tenacity & hardness |
| D. | Electrical conductivity |
| Answer» D. Electrical conductivity | |
| 111. |
Post weld heat treatment is done by____________________? |
| A. | Normalising |
| B. | Stress relieving |
| C. | Tempering |
| D. | Solution annealing |
| Answer» C. Tempering | |
| 112. |
______________ possesses viscoelastic properties? |
| A. | Cork |
| B. | Glass |
| C. | Graphite |
| D. | Rubber |
| Answer» E. | |
| 113. |
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 | |
| 114. |
Polymorphism is not exhibited by______________________? |
| A. | Carbon |
| B. | Iron |
| C. | Phosphorous |
| D. | None of these |
| Answer» E. | |
| 115. |
Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of__________________? |
| A. | Stainless steel or glass lined steel |
| B. | Nickel clad steel |
| C. | High silicon cast iron |
| D. | Aluminium |
| Answer» B. Nickel clad steel | |
| 116. |
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 | |
| 117. |
Platinum and silver are corroded by___________________? |
| A. | Caustic soda solution |
| B. | Phosphoric acid |
| C. | Sulphuric acid (10%) |
| D. | None of these |
| Answer» E. | |
| 118. |
Plastics are____________________? |
| A. | Used in very high temperature applications |
| B. | Non-biodegradable |
| C. | Not suitable for drainage pipe manufacture |
| D. | All A., B. & C. |
| Answer» C. Not suitable for drainage pipe manufacture | |
| 119. |
Plate and frame filter press is usually made of__________________? |
| A. | Mild steel |
| B. | Cast iron |
| C. | Stainless steel |
| D. | Galvanised iron |
| Answer» C. Stainless steel | |
| 120. |
Plasticisers are added to polymers to improve their____________________? |
| A. | Tensile strength |
| B. | Softness & flexibility |
| C. | Acid resistance |
| D. | Alkali resistance |
| Answer» C. Acid resistance | |
| 121. |
Pipes for bi-cycle frames are made of _____________ steel? |
| A. | Hot rolled |
| B. | Chrome carbon |
| C. | Cold rolled |
| D. | Stainless |
| Answer» D. Stainless | |
| 122. |
Pick the odd man out of the following? |
| A. | Calorising |
| B. | Pack carburising |
| C. | Nitriding |
| D. | Cyaniding |
| Answer» B. Pack carburising | |
| 123. |
Pick out the wrong statemen? |
| A. | Hardening makes the steel more brittle |
| B. | High alloy steels contain more than 50% alloying element |
| C. | 18/8 stainless steel is a magnetic steel |
| D. | Both B. and C. |
| Answer» E. | |
| 124. |
Photographic plates are coated with_________________? |
| A. | Silver nitrate |
| B. | Silver halide |
| C. | Calcium silicate |
| D. | Metallic silver |
| Answer» C. Calcium silicate | |
| 125. |
Phenol is not shipped in________________? |
| A. | Nickel lined steel tank cars |
| B. | Galvanised or tin lined drums |
| C. | Boxed glass carboys |
| D. | Cast iron containers |
| Answer» E. | |
| 126. |
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 | |
| 127. |
Percentage of silver in German silver is__________________? |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 0 |
| Answer» E. | |
| 128. |
Percentage elongation of a material is a measure of its _______________________? |
| A. | Ductility |
| B. | Brittleness |
| C. | Toughness |
| D. | Malleability |
| Answer» B. Brittleness | |
| 129. |
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) | |
| 130. |
_____________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working? |
| A. | Solid solution hardening |
| B. | Screw dislocation |
| C. | Strain ageing |
| D. | Twinning |
| Answer» D. Twinning | |
| 131. |
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 | |
| 132. |
Nitriding of steel is done (in electric furnace) at _____________ °C? |
| A. | 510 |
| B. | 1720 |
| C. | 2210 |
| D. | 910 |
| Answer» B. 1720 | |
| 133. |
Nitriding of steel is a process for________________? |
| A. | Case hardening |
| B. | Spheroidising |
| C. | Normalising |
| D. | Annealing |
| Answer» B. Spheroidising | |
| 134. |
Nickel made/clad equipments are suitable for handling________________? |
| A. | Ammonia (both aqueous & anhydrous) |
| B. | Fruit juices, milk & its products and caustic soda solution |
| C. | Nitric acid & hydrochloric acid (concentrated) |
| D. | Sulphuric acid (concentrated) |
| Answer» C. Nitric acid & hydrochloric acid (concentrated) | |
| 135. |
Nickel is a constituent of ________________________? |
| A. | Bronze |
| B. | Solder |
| C. | Duralumin |
| D. | Monel metal |
| Answer» E. | |
| 136. |
Nickel base alloys with ______________ are known as monel metal? |
| A. | Zinc |
| B. | Tin |
| C. | Copper |
| D. | Molybdenum |
| Answer» D. Molybdenum | |
| 137. |
Nickel as a material of construction__________________? |
| A. | Is used as an alloying element for both ferrous & non-ferrous alloys |
| B. | Is paramagnetic below 415° C (its Curie temperature) |
| C. | Diamagnetic |
| D. | Has a body centred cubic (bcc) crystal lattice structure |
| Answer» B. Is paramagnetic below 415° C (its Curie temperature) | |
| 138. |
Nickel and molybdenum are the basic constituents of___________________? |
| A. | Hastelloy |
| B. | German silver |
| C. | Inconel |
| D. | Solder |
| Answer» B. German silver | |
| 139. |
Nickel and copper are the basic constituents of__________________? |
| A. | Hastelloy |
| B. | Monel metal |
| C. | German silver |
| D. | Inconel |
| Answer» C. German silver | |
| 140. |
Nickel (76%) and chromium (15%) alloys are termed as______________________? |
| A. | Inconel |
| B. | Monel |
| C. | Aluminium bronzes |
| D. | Brass |
| Answer» B. Monel | |
| 141. |
Nickel (56%) and molybdenum (17%) alloys are called________________? |
| A. | Monel |
| B. | Hastelloy C |
| C. | Inconel |
| D. | Bronzes |
| Answer» C. Inconel | |
| 142. |
Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of________________? |
| A. | Aluminium |
| B. | Stainless steel |
| C. | High silicon (14%) iron |
| D. | Copper |
| Answer» C. High silicon (14%) iron | |
| 143. |
Muntz metal is a/an alloys of____________________? |
| A. | Magnesium & tin |
| B. | Ferrous material |
| C. | Lead & tin |
| D. | Copper & zinc |
| Answer» E. | |
| 144. |
_____________ moulding process cannot be used for thermoplastic plastics? |
| A. | Compression |
| B. | Extrusion |
| C. | Injection |
| D. | None of these |
| Answer» D. None of these | |
| 145. |
Most suitable material of construction for the storage of concentrated nitric acid is__________________? |
| A. | Cast iron |
| B. | Monel |
| C. | Karbate |
| D. | Aluminium or chromium alloys (Cr > 18% for cold acid) |
| Answer» E. | |
| 146. |
Most suitable material for high pressure vessel operating at 500 atm. and 500° C is__________________? |
| A. | Molybdenum stainless steel |
| B. | 18/8 stainless steel |
| C. | Mild steel |
| D. | High silicon iron (14% Si) |
| Answer» B. 18/8 stainless steel | |
| 147. |
Most of the common metals have ______________ crystal structure? |
| A. | Cubic |
| B. | Hexagonal |
| C. | Orthorhombic |
| D. | None of these |
| Answer» B. Hexagonal | |
| 148. |
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 | |
| 149. |
Monel metal is an alloy of__________________? |
| A. | Molybdenum and nickel |
| B. | Nickel and copper |
| C. | Molybdenum and aluminium |
| D. | Molybdenum and zinc |
| Answer» C. Molybdenum and aluminium | |
| 150. |
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 | |