MCQOPTIONS
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MCQOPTIONS
This section includes 1037 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. |
Which metal is protected by the layer of its own oxide? |
| A. | Iron |
| B. | Silver |
| C. | Calcium |
| D. | Aluminium |
| Answer» E. | |
| 102. |
Zinc is not used%! |
| A. | For producing zinc base die casting alloys |
| B. | In its oxide form as pigments |
| C. | As anode for corrosion prevention in boiler |
| D. | As an alloying element in various bronzes |
| Answer» E. | |
| 103. |
Light weight metallic alloy used in aircraft industry is%! |
| A. | Aluminium |
| B. | High silicon (14%) iron |
| C. | Duralumin |
| D. | Phosphor bronze |
| Answer» D. Phosphor bronze | |
| 104. |
Which metal is protected by the layer of its own oxide?%! |
| A. | Iron |
| B. | Silver |
| C. | Calcium |
| D. | Aluminium |
| Answer» E. | |
| 105. |
The increase in hardness of metal due to its cold working is termed as the __________ hardening.%! |
| A. | Work |
| B. | Age |
| C. | Induction |
| D. | Flame |
| Answer» B. Age | |
| 106. |
The hardest material just prior to diamond in Mho's scale is%! |
| A. | Topax |
| B. | Carborundum |
| C. | Corrundum |
| D. | Calcite |
| Answer» D. Calcite | |
| 107. |
Nickel as a material of construction%! |
| A. | Is used as an alloying element for both ferrous & non-ferrous alloys |
| B. | |
| C. | Dimagnetic |
| Answer» B. | |
| 108. |
The most commonly used resin for making reinforced plastic is%! |
| A. | Unsaturated polyester |
| B. | Polypropylene |
| C. | Polyurathane |
| D. | Nylon-6 |
| Answer» B. Polypropylene | |
| 109. |
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. | |
| 110. |
Nickel and molybdenum are the basic constituents of%! |
| A. | Hastealloy |
| B. | German silver |
| C. | Inconel |
| D. | Solder |
| Answer» B. German silver | |
| 111. |
Babbit metal used for bearings is a____base alloy.%! |
| A. | Tin |
| B. | Lead |
| C. | Aluminium |
| D. | Copper |
| Answer» B. Lead | |
| 112. |
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 | |
| 113. |
Nickel and copper are the basic constituents of%! |
| A. | Hastelloy |
| B. | Monel metal |
| C. | German silver |
| D. | Inconel |
| Answer» C. German silver | |
| 114. |
Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its%! |
| A. | High strength to weight ratio |
| B. | Low temperature strength properties |
| C. | Its ability to be cast, rolled, forged & stamped |
| D. | High strength and corrosion & oxidation-resistance at elevated temperature |
| Answer» B. Low temperature strength properties | |
| 115. |
'Hypersil' is a __________ steel.%! |
| A. | High speed |
| B. | Silicon |
| C. | Molybdenum |
| D. | Tungsten |
| Answer» C. Molybdenum | |
| 116. |
Pipes for bi-cycle frames are made of __________ steel.%! |
| A. | Hot rolled |
| B. | Chrome carbon |
| C. | Cold rolled |
| D. | Stainless |
| Answer» D. Stainless | |
| 117. |
Pure nickel is%! |
| A. | |
| B. | Having h.c.p. crystal lattice |
| C. | Ferromagnetic at room temperature |
| Answer» D. | |
| 118. |
Ceramic recuperators are generally made of%! |
| A. | Silicon carbide |
| B. | Calcium carbide |
| C. | Fireclay bricks |
| D. | High alumina bricks |
| Answer» B. Calcium carbide | |
| 119. |
__________ 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 | |
| 120. |
German silver in an alloy of%! |
| A. | Copper, nickel and zinc |
| B. | Copper, aluminium and silver |
| C. | Silver, zinc and aluminium |
| D. | Silver, nickel and zinc |
| Answer» B. Copper, aluminium and silver | |
| 121. |
Graphite is corroded by%! |
| A. | Sulphuric acid (10%) |
| B. | Sea water |
| C. | Hydrochloric acid |
| D. | None of these |
| Answer» E. | |
| 122. |
Which of the following has the poorest wel-dability?%! |
| A. | Low carbon steel |
| B. | Mild steel |
| C. | Wrought iron |
| D. | High-carbon steel |
| Answer» E. | |
| 123. |
The damage/deterioration of metals by the __________ action of fluids is called 'erosion'.%! |
| A. | Abrasive |
| B. | Corrosive |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» B. Corrosive | |
| 124. |
Ceramic materials fabrication can not be done by%! |
| A. | Welding |
| B. | Slip casting |
| C. | Extrusion |
| D. | Plastic pressing |
| Answer» B. Slip casting | |
| 125. |
Which has the maximum melting point out of the following?%! |
| A. | Steel |
| B. | Cast iron |
| C. | Stainless steel |
| D. | Wrought iron |
| Answer» E. | |
| 126. |
Aqueous nitric acid is stored in __________ vessel.%! |
| A. | Plain carbon steel |
| B. | Stainless steel |
| C. | Cast iron |
| D. | Thermosetting plastic material |
| Answer» D. Thermosetting plastic material | |
| 127. |
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 | |
| 128. |
Low carbon steels are those in which carbon percentage is around%! |
| A. | 0.1 to 0.35 |
| B. | 0.4 to 0.7 |
| C. | 0.8 to 1.5 |
| D. | 1.5 to 2 |
| Answer» B. 0.4 to 0.7 | |
| 129. |
Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of%! |
| A. | Aluminium |
| B. | Stainles steel |
| C. | High silicon (14%) iron |
| D. | Copper |
| Answer» C. High silicon (14%) iron | |
| 130. |
Nickel (76%) and chromium (15%) alloys are termed as%! |
| A. | Inconel |
| B. | Monel |
| C. | Aluminium bronzes |
| D. | Brass |
| Answer» B. Monel | |
| 131. |
A steel alloy containing 36% nickel is called __________ , which has a zero co- efficient of expansion.%! |
| A. | Austenitic stainless steel |
| B. | Heat resisting steel |
| C. | Invar |
| D. | High speed steel |
| Answer» D. High speed steel | |
| 132. |
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 | |
| 133. |
A magnetic material becomes __________ above the Curie temperature.%! |
| A. | Ferromagnetic |
| B. | Diamagnetic |
| C. | Paramagnetic |
| D. | None of these |
| Answer» D. None of these | |
| 134. |
Corrosion resisting properties of cast iron are significantly improved by the addition of 12 - 15% of%! |
| A. | Tungsten |
| B. | Vanadium |
| C. | Silicon |
| D. | All of the above |
| Answer» D. All of the above | |
| 135. |
__________ iron is produced, when molten pig iron is chilled suddenly.%! |
| A. | White cast |
| B. | Grey cast |
| C. | Wrought |
| D. | None of these |
| Answer» B. Grey cast | |
| 136. |
18/8 stainless steel means, that it contains%! |
| A. | 18% chromium and 8% nickel |
| B. | 18% chromium and 8% molybdenum |
| C. | 18% nickel and 8% chromium |
| D. | 18% molybdenum and 8% chromium |
| Answer» B. 18% chromium and 8% molybdenum | |
| 137. |
Which of the following has the least carbon percentage?%! |
| A. | Low carbon steel |
| B. | Mild steel |
| C. | Wrought iron |
| D. | White cast iron |
| Answer» D. White cast iron | |
| 138. |
Which of the following undergoes granular fracture?%! |
| A. | Wrought iron |
| B. | Steel |
| C. | Cast iron |
| D. | None of these |
| Answer» C. Cast iron | |
| 139. |
Gas holder of a gobar (cowdung) gas plant is made of%! |
| A. | Molybdenum stainless steel |
| B. | Tin |
| C. | Mild steel |
| D. | Aluminium |
| Answer» D. Aluminium | |
| 140. |
Rubber lined vessels are corroded by the action of%! |
| A. | Aqua regia |
| B. | Chloroform |
| C. | Sulphuric acid (95%) |
| D. | All of the above |
| Answer» E. | |
| 141. |
Which of the following is not a nickel based alloy?%! |
| A. | Inconel |
| B. | Hastelloys |
| C. | Nimonics |
| D. | Babbit metal |
| Answer» E. | |
| 142. |
Hydrochloric acid is stored in a __________ steel vessel.%! |
| A. | Lead lined |
| B. | Rubber lined |
| C. | Glass lined |
| D. | Stainless |
| Answer» C. Glass lined | |
| 143. |
High resistance electrical heating elements/wire are not made of%! |
| A. | Marageing steel |
| B. | Nimonic alloys |
| C. | Kanthal wire |
| D. | Nichrome |
| Answer» B. Nimonic alloys | |
| 144. |
White cast iron as compared to grey cast iron is%! |
| A. | More durable |
| B. | Very brittle |
| C. | Very hard |
| D. | All of the above |
| Answer» E. | |
| 145. |
Glass lined vessels are not used for handling/storing%! |
| A. | Dilute H‚ÇÇSO‚ÇÑ |
| B. | Dilute HNO‚ÇÉ |
| C. | Dilute HCl |
| D. | Hydroflouric acid |
| Answer» E. | |
| 146. |
The chlorinator used in the manufacture of DDT is made of%! |
| A. | Glass |
| B. | Glass lined steel |
| C. | Teflon |
| D. | Bakelite |
| Answer» C. Teflon | |
| 147. |
*$_A steel alloy containing 36% nickel is called __________ , which has a zero co- efficient of expansion.? |
| A. | Austenitic stainless steel |
| B. | Heat resisting steel |
| C. | Invar |
| D. | High speed steel |
| Answer» D. High speed steel | |
| 148. |
*$_Nickel (76%) and chromium (15%) alloys are termed as? |
| A. | Inconel |
| B. | Monel |
| C. | Aluminium bronzes |
| D. | Brass |
| Answer» B. Monel | |
| 149. |
*$_Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of? |
| A. | Aluminium |
| B. | Stainles steel |
| C. | High silicon (14%) iron |
| D. | Copper |
| Answer» C. High silicon (14%) iron | |
| 150. |
*$_A magnetic material becomes __________ above the Curie temperature.? |
| A. | Ferromagnetic |
| B. | Diamagnetic |
| C. | Paramagnetic |
| D. | None of these |
| Answer» D. None of these | |