Description : __________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C. (A) Veneering (B) Galvanising (C) Electroplating (D) Calorising
Last Answer : (D) Calorising
Description : 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)
Last Answer : (C) Both (A) & (B)
Description : Pick out the wrong statement about coating/electroplating of metals. (A) Phosphate coating is used as an excellent base for paints & enamels (B) Phosphate coating is less corrosion resistant than ... coating metal is made the anode (D) Calorising is the process of coating steel with chromium
Last Answer : (D) Calorising is the process of coating steel with chromium
Description : Generally __________ are subjected to galvanising (i.e., zinc coating). (A) Non-ferrous metals (B) Non-metals (C) Low carbon steels (D) Stainless steel
Last Answer : (C) Low carbon steels
Description : Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per m2 of steel strip. (A) 5-10 (B) 1000-1500 (C) 120-500 (D) 1500-3000
Last Answer : Option C
Description : The coating of a thin layer of zinc on steel or iron objects is known as – (1) Hot dipping (2) Tinning (3) Galvanising (4) Electroplating
Last Answer : (3) Galvanising Explanation: Galvanization is the process of applying a protective zinc coating to steel or iron, in order to prevent rusting. Although galvanization can be done with electrochemical and ... is hot-dip galvanization, in which steel parts are submerged in a bath of molten zinc.
Description : The coating of a thin layer of zinc on steel or iron objects is known as (1) Hot dipping (2) Tinning (3) Galvanising (4) Electroplating
Last Answer : Galvanising
Description : Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process? (A) Galvanising (B) Tinning (C) Sherardizing (D) None of these
Last Answer : (C) Sherardizing
Description : Iron is prevented from rusting by coating with zinc. This process is called as – (1) Galvanisation (2) Corrosion (3) Sublimation (4) Reduction
Last Answer : (1) Galvanisation Explanation: Galvanization is the process of applying a protective zinc coating to steel or iron, in order to prevent rusting. The term is derived from the name of Italian scientist Luigi ... is hot-dip galvanization, in which steel parts are sub-merged in a bath of molten zinc.
Description : Iron is prevented from rusting by coating with zinc. This process is called as (1) Galvanisation (2) Corrosion (3) Sublimation (4) Reduction
Last Answer : Galvanisation
Description : Which of the following is false? (a) Mica is usually found in metamorphic and igneous rocks (b) Aluminium has the advantage over iron as it is resistant to corrosion (c) line is mostly used in galvanising iron and steel goods (d) Manganese is largely used in making fertilizers
Last Answer : Ans: (d)
Description : Galvanised Iron sheets have a coating of------ A. Tin B. Silver C. Zinc (Answer) D. Chromium
Last Answer : C. Zinc (Answer)
Description : Galvanised Iron sheets have a coating of (1) Tin (2) Lead (3) Zinc (4) Chromium
Last Answer : (3) Zinc
Description : The main purpose of galvanising iron sheets is to (A) Harden the surface (B) Increase its glossiness and lustre (C) Prevent the action of water (D) Prevent the action of oxygen
Last Answer : (C) Prevent the action of water
Description : . To improve the machinability of steel, it is generally subjected to (A) Spheroidising (B) Tempering (C) Normalising (D) Annealing
Last Answer : (A) Spheroidising
Description : o improve the machinability of steel, it is generally subjected to (A) Spheroidising (B) Tempering (C) Normalising (D) Annealing
Last Answer : Option A
Description : Galvanising is not a zinc diffusion process. A zinc diffusion process istermed as (A) Sherardizing (B) Parkerising (C) Anodising (D) None of these
Last Answer : (A) Sherardizing
Description : Wrought iron does not have (A) Uniform strength in all directions (B) Ability to hold protective coating (C) High ductility & corrosion resistance (D) Easily weldable characteristics
Description : Corrosion of metals cannot be prevented by its (A) Tempering (B) Chromising (C) Aluminising (D) Alloying
Last Answer : (A) Tempering
Description : Maximum consumption of zinc is in (A) Alloying (B) Galvanising (C) Utensil manufacture (D) Electrical industr
Last Answer : (B) Galvanising
Description : Galvanising means covering iron with a thin coat of (A) Tin (B) Zinc (C) Glaze (D) Coal tar
Last Answer : Answer: Option B
Description : The metal chiefly used for galvanising iron is : (1) Zinc (2) Mercury (3) Cadmium (4) Tin
Last Answer : Zinc
Description : The heat treatment process applied to cold formed steel parts is (A) Normalising (B) Tempering (C) Artificial ageing (D) Solution annealing
Last Answer : (D) Solution annealing
Description : The heat treatment process to which castings and the steel balls produced by cold heading are subjected is (A) Tempering (B) Normalising (C) Annealing (D) None of these
Last Answer : (B) Normalising
Description : Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part? (A) Anodising (B) Tempering (C) Carburising
Last Answer : (B) Tempering
Description : Tempering of a material does not improve its (A) Machinability (B) Toughness (C) Internal stress level (D) Softness
Last Answer : A) Machinability
Description : Galvanising is generally done on (A) Non-ferrous metals (B) Low carbon steel (C) Stainless steel (D) Cast iron
Last Answer : (B) Low carbon steel
Description : Lead is added to 60:40 brass primarily to improve (A) Machinability (B) Corrosion resistance (C) Fluidity (D) Strength
Last Answer : (A) Machinability
Description : Which of the following metals in not used for coating of the base metal to guard it against corrosion? (A) Lead (B) Cadmium (C) Magnesium (D) Aluminium
Last Answer : (C) Magnesium
Description : Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising
Last Answer : (A) Normalising
Description : Pick the odd man out of the following. (A) Calorising (B) Pack carburising (C) Nitriding (D) Cyaniding
Last Answer : (A) Calorising
Description : Tempering of steel is done to make it (A) Brittle (B) Hard (C) Rollable (D) Soft
Last Answer : (D) Soft
Description : Hardened steel is softened by (A) Normalising (B) Tempering (C) Annealing (D) Carburising
Description : Pick out the correct statement. (A) Hot worked materials are subjected to annealing to remove internal stresses (B) Annealing of steel hardens it slightly (C) Normalising of a material induces stresses (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness
Last Answer : (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness Share
Description : __________ of hard alloy and tool steel is done to make it easily machinable. (A) Case carburising (B) Tempering (C) Normalising (D) Annealing
Description : Galvanised iron sheets have a coating of which metal? -General Knowledge
Last Answer : The answer is 'Zinc'
Last Answer : answer:
Description : Galvanised iron sheets have a coating of which metal?
Description : Presence of nickel in steel improves its (A) Corrosion resistance (B) Cutting ability (C) Wear resistance (D) All (A), (B) and (C
Last Answer : (A) Corrosion resistance
Description : Presence of manganese in alloy steel improves its (A) Corrosion resistance (B) Cutting ability (C) Abrasion resistance & toughness (D) Elasticity & creep resistance
Last Answer : (C) Abrasion resistance & toughness
Description : 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
Last Answer : (C) Machinability
Description : Presence of cobalt in steel improves its (A) Cutting ability (B) Corrosion resistance (C) Tensile strength
Last Answer : (A) Cutting ability
Description : Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its (A) Lower cost (B) Abundant availability (C) Resistance to vegetable acids as the tin plate are commercially used in 'canning' industry (D) None of these
Last Answer : (C) Resistance to vegetable acids as the tin plate are commercially used in 'canning' industry
Description : The process of coating Iron with Zinc is known as?
Last Answer : Galvanizing is the process of coating Zinc by hot dipping
Description : Addition of tungsten to steel imparts (A) Magnetic properties (B) Cutting hardness (C) Corrosion resistance (D) Ductility
Last Answer : (B) Cutting hardness
Description : Corrosion resistance of steel is increased by the addition of (A) Phosphorous and tungsten (B) Nickel and chromium (C) Lead and vanadium (D) Molybdenum and tungsten
Last Answer : (B) Nickel and chromium
Description : Out of the following, the __________ pipe has the least corrosion resistance. (A) Mild steel (B) Copper (C) Cast iron (D) Wrought iron
Last Answer : D) Wrought iron