Description : Pick out the wrong statement. (A) Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties (B) Low carbon steel does not respond to ... are also used for surface hardening (D) Martempering of a material is a hardening process
Last Answer : Option C
Description : __________ is not a case hardening process. (A) Carburising (B) Nitriding (C) Cyaniding (D) Annealing
Last Answer : (D) Annealing
Description : While normal carburising and nitriding surface treatments increase fatigue strength, excessive treatment may decrease the fatigue strength. Why ?
Last Answer : .Normal carburising/nitriding treatments increase volume due to phase transformation at Surface and introduce residual compressive surface stress and thus increase the fatigue strength. By excessive treatment the ... develop in the regions of high tensile stress and lead to early fatigue failure.
Description : Carbon supply in pack carburising process is in the form of (A) Charcoal (B) Calcium carbide (C) Hydrocarbon oil (D) Graphite
Last Answer : (A) Charcoal
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 : The process of coating steel sheets by zinc to improve its corrosion resistance is called (A) Calorising (B) Galvanising (C) Zincification (D) Tempering
Last Answer : (B) Galvanising
Description : ________ is not a heat treatment process. (A) Cyaniding (B) Parkerizing (C) Austempering (D) Martempering
Last Answer : (B) Parkerizing
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 : Nitriding of steel is done (in electric furnace) at __________ °C. (A) 510 (B) 1720 (C) 2210 (D) 910
Last Answer : (A) 510
Description : The purpose of nitriding the steel is to (A) Harden its surface (B) Soften its surface (C) Improve its reliability (D) None of these
Last Answer : (A) Harden its surface
Description : Nitriding of steel is a process for (A) Case hardening (B) Spheroidising (C) Normalising (D) Annealing
Last Answer : (A) Case hardening
Description : Nitriding of a steel part does not increase its (A) Grain size (B) Fatigue limit (C) Surface hardness (D) Wear resistance
Last Answer : Option B
Description : Case hardening is not done by (A) Nitriding (B) Hot dipping (C) Electroplating (D) Both ‘b’ & ‘c’
Last Answer : Option D
Description : Case hardening of a material is (A) Followed by tempering or carburising (B) Preceded by its tempering (C) Done to get a soft ductile interior with a very hard surface (D) Carried out to get extreme hardness in its core
Last Answer : (D) Carried out to get extreme hardness in its core
Description : Pick the odd man out. (A) Briquettes (B) Wood (C) Oil gas
Last Answer : (B) Wood
Description : Hardened steel is softened by (A) Normalising (B) Tempering (C) Annealing (D) Carburising
Last Answer : (B) Tempering
Description : Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising
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 : (A) Normalising
Description : Which of the following heat treatment processes is usually applied to castings? (A) Tempering (B) Annealing (C) Normalising (D) Carburising
Last Answer : (D) Carburising
Description : __________ of hard alloy and tool steel is done to make it easily machinable. (A) Case carburising (B) Tempering (C) Normalising (D) Annealing
Description : Steel is welded using the __________ flame. (A) Carburising (B) Neutral (C) Oxidising (D) All (A), (B) & (C)
Description : Statement - 1 : Nitriding is the process of heating steel in presence of `N_(2)` to form iron nirides . Statement -2 : The surface of steel becomes ha
Last Answer : Statement - 1 : Nitriding is the process of heating steel in presence of `N_(2)` to form iron ... Statement-1 : is false , statement-2 : is true
Description : Nitriding is a process of heating steel in atmosphere of :
Last Answer : Nitriding is a process of heating steel in atmosphere of : A. ammonia B. oxygen C. carbondioxide D. air
Description : 10. Pick the odd man out- Seed banks, Tissue culture, Sacred groves, Cryopreservation
Last Answer : Sacred groves
Description : 8. Pick the odd man out- Tetanus toxoid, a-1 antitrypsin, Hepatitis B vaccine, Humulin
Last Answer : Tetanus toxoid
Description : In to build a fire what did the man pack for lunch?
Last Answer : What is the answer ?
Description : Pick the odd pair out.
Last Answer : Pick the odd pair out. A. Cellular level: Porifera B. Tissue level : Aschelminthes C. Organ level : Phatyhelminthes D. Organ system level : Annelida
Description : Pick the odd one out based on crop season – (1) Rice (2) Wheat (3) Maize (4) Cotton
Last Answer : (2) Wheat Explanation: Rabi ( Also called Rabbi ) and Kharif are the two agricultural crops related words that have come with the Mughals in the Indian subcontinent and are widely used eversince. The ... towards the end of May in the state of Kerala during the advent of south-west monsoon season
Description : Pick up the odd one out: b) Regenerator c) Recuperator d) Metallic recuperator e) Economiser
Last Answer : Economiser
Description : Pick the odd one out. (1) Floppy Disk (2) ROM (3) DVD (4) Hard Disk
Last Answer : ROM
Description : Pick the odd one out : (1) Java clients (2) Worms (3) Trojan Horse (4) Virus
Last Answer : Trojan Horse
Description : Pick the odd one out in the following: 13, 23, 33, 43, 53 (A) 23 (B) 33 (C) 43 (D) 53
Last Answer : Correct option is (B). In the group of given numbers, all are prime numbers but 33 is not
Description : Pick the odd one amongst the following on the basis of their medicinal properties mentioning the reason. (i) Luminal, seconal, phenacetin, equanil (ii) Chloroxylenol, phenol, chlorampherical, bithional
Last Answer : Ans. (i) Phenacetin is an antipyretic while all the rest are tranquilisers. (ii) Chlorampherical is an antibiotic while all the remaining are antiseptics.
Description : Find the odd man out : (i) Force responsible for a string to become taut on stretching
Last Answer : Find the odd man out : (i) Force responsible for a string to become taut on stretching (ii) ... force due to which we can hold an object in hand.
Description : Find odd man out a)Fanta c) mathani b) chakiya. d) tillers
Last Answer : tillers
Description : 7. Choose the odd man out- Fragmentation, Stratification, Leaching, Catabolism.
Last Answer : Stratificztion
Description : 4. Choose the odd man out- Parasitism, Predation, Commensalism, Amensalism.
Last Answer : 4. Amensalism
Description : Find the odd man out : (1) Internet Explorer (2) Netscape (3) Mozilla (4) Excel
Last Answer : Excel
Description : In a shell and tube heat exchanger, square pitch compared to triangular pitch (A) Gives a higher shell side pressure drop (B) Gives a lower shell side pressure drop (C) Can pack more surface area into a shell of given diameter (D) None of these
Last Answer : (A) Gives a higher shell side pressure drop