Description : For platinum thermocouples, lead wires are made of (A) Copper & copper-nickel alloys (B) Copper & iron (C) Iron & nickel (D) Tin & nickel
Last Answer : (A) Copper & copper-nickel alloys
Description : Locomotive boiler tubes are made of __________ alloys. (A) Arsenic copper (B) Magnesium (C) Aluminium (D) Nickel
Last Answer : (A) Arsenic copper
Description : Dilute sulphuric acid is transported in __________ pipes. (A) Mild steel (B) Lead (C) Copper (D) Special alloys
Last Answer : (B) Lead
Description : Thermometer bulb & capillary in case of mercury filled pressure spring expansion thermometer is normally made of __________ as mercury does not amalgamate with it. (A) Copper (B) Copper alloys (C) Stainless steel (D) Monel
Last Answer : (C) Stainless steel
Description : Spark plugs, ignition tubes and electrodes are made of nickel __________ alloys. (A) Beryllium (B) Manganese (C) Copper (D) Iron
Last Answer : (B) Manganese
Description : Muntz metal is a/an alloys of (A) Magnesium & tin (B) Ferrous material (C) Lead & tin (D) Copper & zinc
Last Answer : (D) Copper & zinc
Description : Nickel base alloys with __________ are known as monel metal. (A) Zinc (B) Tin (C) Copper (D) Molybdenum
Last Answer : (C) Copper
Description : Fire refining process is employed in case of (A) Tin (B) Copper (C) Zinc (D) Aluminium
Last Answer : (B) Copper
Description : Alloys having more than 80% copper are generally more (A) Abrasion resistant (B) Corrosion resistant (C) Prone to season cracking (D) Machinable
Last Answer : (B) Corrosion resistant
Description : Which of the following is not used as a bearing material? (A) Copper-lead alloys (B) Babbitts (C) Bronzes (D) Cermets
Last Answer : Option D
Description : High content copper amalgam . . . a. generally requires greater energy to accomplish trituration b. should be placed rapidly in large increments c. Continues to leak since the ... not cause galvanism in oral environment e. is equally effective as conventional alloys in clinical studies
Last Answer : a. generally requires greater energy to accomplish trituration
Description : The shafts are made of a. mild steel b. alloy steel c. copper alloys d. cast iron.
Last Answer : d. cast iron.
Description : Consider two alloys A and B. 50 kg of alloy A is mixed with 70 kg of alloy B. A contains brass and copper in the ratio 3 : 2, and B contains them in the ratio 4 : 3 respectively. What is the ratio of copper to brass in the mixture? A) 8 : 5 B) 7 : 5 C) 5 : 11 D) 4 : 9 E) 5 : 7
Last Answer : Answer: E Brass in A = 3/5 * 50 = 30 kg, Brass in B = 4/7 * 70 = 40 kg Total brass = 30+40 = 70 kg So copper in mixture is (50+70) – 70 = 50 kg So copper to brass = 50 : 70=5:7
Description : What are a list of chemical elements and alloys that can be melted in a typical residential food oven?
Last Answer : I’ve got a slug of a Bismuth Cadmium, Lead, Tin alloy that melts at about 150F , 65C. It melts in hot water. It’s toxic so it’s probably not a good idea to touch it or use kitchen tools.
Description : Are we still creating more alloys?
Last Answer : Alloys aren’t discovered they’re created. Even if they were discovered we’d never know if we were done or not, as you can never know when you’re going to discover something.
Description : Which of the following is used as base material in Selective laser sintering (SLS)? a.Photopolymer b.Thermoplastics, Metal powders c.Titanium alloys d.Various materials
Last Answer : b.Thermoplastics, Metal powders
Description : Which of the following is used as base material in Electron Beam Melting (EBM) process? a.Titanium alloys b.Photopolymer c.Various materials d.Paper
Last Answer : a.Titanium alloys
Description : Which of the following is used as base material in Stereolithography (SLA) process? a.Thermoplastics , Metals powders b.Thermoplastics , Eutectic metals. c.Titanium alloys d.Photopolymer
Last Answer : d.Photopolymer
Description : Where on motor vehicle would aluminium alloys be used?
Last Answer : on the seatbelt.
Description : What are the three characteristics that make steel alloys valuable?
Last Answer : Need answer
Description : Permanent magnet is normally made of- (a) Aluminum (b) Wrought iron (c) Cast iron (d) Alnico alloys
Last Answer : Ans: C
Description : What is used in making of alloys? A. Lime-stone B. Chromium C. Granite D. Gypsum
Last Answer : ANSWER: B
Description : Elements that show the properties of both metals and non-metals are called (a) Allotropes (b) Metalloids (c) Alloys (d) Colloids
Last Answer : Ans:(b)
Description : Alloys in which mercury is one of the metals are called (a) Amalgams (b) Emulsions (c) Mixtures (d) Solders
Last Answer : Ans:(a)
Description : Which one of the following is not a characteristic feature of alloys? They are – (1) Compounds (2) Mixtures (3) Solutions (4) Homogeneous systems
Last Answer : (4) Homogeneous systems Explanation: An alloy is a mixture or metallic solid solution composed of two or more elements. So they are heterogeneous systems. Complete solid solution alloys give ... (heat treatment) history. Alloys usually have different properties from those of the component elements.
Description : Metals, in general are of low strength and do not possess required physio-chemical and technological properties for a definite purpose. Alloys are therefore more than metals alone. Discuss the arrangement of atoms and Structures of alloys.
Last Answer : Alloys are produced by melting or sintering two ore more metals, or metals and a non-metal, together. Alloys possess typical properties inherent in the metallic state. The chemical elements ... an alloy are its individual portions, each having a single structure with its characteristic features.
Description : Which alloys is used for making magnets?
Last Answer : Alnico
Description : High resistance electrical heating elements/wire are not made of (A) Maraging steel (B) Nimonic alloys (C) Kanthal wire (D) Nichrome
Last Answer : (A) Maraging steel
Description : The largest consumption of zinc for alloys is in the making of (A) Bearing metal (B) Brasses (C) Brazing solder
Last Answer : (B) Brasses
Description : Which of the following alloys does not contain nickel? (A) Chlorinet - 2 alloy (B) Monel (C) Inconel (D) Babbitt metal
Last Answer : (D) Babbitt metal
Description : Which of the following alloys does not contain nickel? (A) Chloro, et-2 alloy (B) Monel (C) Inconel (D) Babbitt metal
Description : Nickel (76%) and chromium (15%) alloys are termed as (A) Inconel (B) Monel (C) Aluminium bronzes (D) Brass
Last Answer : (A) Inconel
Description : 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)
Last Answer : (D) Aluminium or chromium alloys (Cr > 18% for cold acid)
Description : Babbitt metals used for making bearings are (A) Tin or lead based alloys (B) Short of antifrictional properties (C) Having homogenous microstructure (D) Yellow metals
Last Answer : (A) Tin or lead based alloys
Description : Nickel (56%) and molybdenum (17%) alloys are called (A) Monel (B) Hastelloy C (C) Inconel (D) Bronzes
Last Answer : (B) Hastelloy C
Description : The addition of antimony in tin-based alloys improves its (A) Rupture strength and hot hardness (B) Impact strength and bonding strength (C) Deformation resistance (D) Wear resistance
Last Answer : (C) Deformation resistance
Description : 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
Last Answer : (D) As an alloying element in various bronzes
Description : Which of the following is not an alloy of nickel and chromium? (A) Inconel (B) Hastelloy (C) Nimonic alloys (D) Duralumin
Last Answer : (D) Duralumin
Description : 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
Last Answer : (C) Used for making steam valves and turbine blades as it resists steam attack at high temperature
Description : For spinning viscose rayon, the extrusion spinnerettes are made of (A) Platinum or gold alloys (B) High carbon steel (C) Aluminium (D) Nickel
Last Answer : (A) Platinum or gold alloys
Description : __________ alloys have the highest specific strength of all the structural materials out of the following. (A) Magnetic steel (B) Titanium (C) Chromium (D) Magnesium
Last Answer : (B) Titanium
Description : Pick out the wrong statement. (A) Metal/alloys having hexagonal crystal lattice structure are less malleable than those having cubic crystal lattice structure (B) Metal/alloys having body centred cubic ... D) Both ferritic & austenitic stainless steel has a face centred cubic (fcc) crystal structure
Last Answer : (C) Tungsten has a body centred cubic (bcc) crystal lattice structure
Description : Pick out the wrong statement. (A) Alloys are harder than their component elements (B) Presence of silicon in steel decreases its electrical resistance (C) Karbate is an acid resistant material of construction ... , a steel alloyed with 10% Ni and 20% Cr can be used upto a temperature of 1100°C
Last Answer : (B) Presence of silicon in steel decreases its electrical resistance
Description : 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
Last Answer : (C) Both 'a' & 'b'
Description : Among the tin containing alloys, __________ consumes the maximum amount of tin. (A) Solder (B) White metal (C) Pewter metal (D) Bronzes
Last Answer : (A) Solder
Description : 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
Last Answer : (A) Is used as an alloying element for both ferrous & non-ferrous alloys
Description : Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower (A) Price (B) Corrosion resistance (C) Thermal conductivity (D) Abundant availability
Last Answer : (D) Abundant availability
Description : Bush bearings are made of (A) Mild steel (B) Phosphorous bronze (C) White metal alloys (D) None of these
Last Answer : (B) Phosphorous bronze
Description : Maximum consumption of lead is in the manufacture of (A) Storage batteries (B) Solder alloys
Last Answer : (A) Storage batteries
Description : What are memory alloys? How are they useful?
Last Answer : Certain alloys which regain their original shape when deformed are called memory alloys. Preparation of memory alloys saves energy of melting and recasting of used articles.