A. Brass is an alloy of copper & zinc
B. Bronze is an alloy of copper & tin
C. The alloy named German silver does not contain any silver
A. Stainless
B. Hot rolled
C. Chrome carbon
A. Carbon steel
B. Nickel
D. Stainless steel type 304
A. Spheroidal grey cast iron contains graphite flakes
C. Wrought iron contains about 0.02% carbon
D. The chilled cast iron does not contain graphite
A. Aqua regia
C. Hydrochloric acid (10%)
D. Ferrous sulphate
A. Nickel, monel, stainless steel and graphite
C. Aluminium, copper, high silicon iron
D. Silicone rubber, teflon, porcelain and wood
A. Hammer
B. Workpiece
D. Weight on hammer
A. Cannot be scratched by finger nails
B. Is the lightest metal in common use
D. Is the hardest metal in common use
A. 1 to 1. 5
C. 0.1 to 0.35
D. 0.8 to 1.4
A. Plastics
B. Fibres
C. Elastomers
A. Low carbon steel
B. Mild steel
D. Wrought iron
A. Ammonia (both aqueous & anhydrous)
C. Nitric acid & hydrochloric acid (concentrated)
D. Sulphuric acid (concentrated)
A. Mild steel
B. Aluminium
C. Stainless steel 316
A. Monel
C. Inconel
D. Chlorinet 2 alloy
A. Zircaloy
B. Concrete
D. Graphite
B. Normalising
C. None of these
D. Annealing
A. Crane hooks are normally made of wrought iron
B. perature
C. The toughness of a material decreases, when it is heated
E. The temperature at which new grains are formed in a metal is known as the recrystallisation
A. Concrete
C. Wood
D. Porcelain
A. Plastic deformation of a material is its temporary distortion under the action of applied stress
B. Rusting of iron is not electrochemical in nature
C. Stainless steel is nothing but chromium coated steel
A. Stress-strain curve
B. None of these
D. Hysteresis loop area
B. Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature
C. The predominant use of tin is in the form of coating for steel & copper alloys
D. Tin exists in two allotropic forms
A. Nickel
B. Magnesium
D. Aluminium
A. Not resistant to corrosion
C. Not used as pigment (in its compound forms) for paints
D. Used as a cathodic material
E. scraper buildings</strong>
A. Formaldehyde
C. Phenol
D. Acetic acid
B. Toughness
C. All A., B. & C.
D. Stiffness
A. Cast iron
B. Monel
D. Karbate
C. Graphite
D. Kel-F and Teflon
A. Glass
B. Graphite
C. Cork
B. 1 to 8
C. 1 to 15
D. 0 to 10
A. Whitish in color
C. Brittle
D. Strong and hard
A. Is lined with lead
C. Is lined with acid-proof bricks
D. Is lined with rubber
B. Lead
C. Aluminium
A. Do not require heat treatment for any of its applications
C. Do not have good resilience properties
D. Is tempered at 850C
B. Nichrome, a steel alloyed with 10% Ni and 20% Cr can be used upto a temperature of 1100C
C. Alloys are harder than their component elements
D. Karbate is an acid resistant material of construction
A. Rubber lined steel
B. Lead lined steel
D. Stainless steel
A. Feldspar
B. Fluorite
C. Quartz
B. Chlorine (dry or wet)
C. SO2 (dry or wet)
D. Hydrochloric acid
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
A. Pure rubber is as useless as pure gold as a material of construction
C. Copper has poor weldability
D. Reinforced plastics are made from both thermoplastic as well as thermosetting plastics
A. Calcium
B. Iron
C. Silver
A. Very high cost
B. Scarce availability
D. Very low strength to weight ratio
B. Rise in temperature
C. Having scratches on the surface
D. Having notches in the specimen
B. White cast iron
D. Mild steel
A. An alloy of iron, chromium & carbon
C. High carbon iron
D. Highly resistance to acid corrosion
C. Stainless steel
D. Bronze
C. Martenistic
D. Ferritic
A. Rupture strength and hot hardness
B. Impact strength and bonding strength
D. Wear resistance
A. Silver nitrate
B. Metallic silver
D. Calcium silicate
A. Anodising
C. Parkerising
A. Vanadium, chromium and tungsten
B. Tungsten, vanadium and chromium
C. Chromium, tungsten and vanadium
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