Tin coating is not done by (A) Vaporising (B) Hot dipping (C) Electro deposition (D) Spraying

Tin coating is not done by
(A) Vaporising
(B) Hot dipping
(C) Electro deposition
(D) Spraying
by

1 Answer

Answer :

(A) Vaporising
by

Related questions

Tin coating on metals is not done by (A) Spraying (B) Powder metallurgy (C) Hot dipping (D) Electro-deposition

Description : Tin coating on metals is not done by (A) Spraying (B) Powder metallurgy (C) Hot dipping (D) Electro-deposition

Last Answer : (B) Powder metallurgy

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

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

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

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.

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

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

_____ is the process of coating Zinc by hot dipping

Last Answer : Galvanizing is the process of coating Zinc by hot dipping 

Electro deposition of metals i.e. electroplating is never done on (A) Metals (B) Alloys (C) Refractories (D) Non-metals

Description : Electro deposition of metals i.e. electroplating is never done on (A) Metals (B) Alloys (C) Refractories (D) Non-metals

Last Answer : (C) Refractories

Case hardening is not done by (A) Nitriding (B) Hot dipping (C) Electroplating (D) Both ‘b’ & ‘c’

Description : Case hardening is not done by (A) Nitriding (B) Hot dipping (C) Electroplating (D) Both ‘b’ & ‘c’

Last Answer : Option D

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

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

(3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be plated the negative electrode (cathode) or plate in a galvanic couple. Thus a spoon or other object may be connected by a wire to a plate of nickel. The process that occurs on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

Description : (3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be ... on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

Last Answer : Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide

State the two methods of Hot dipping.

Description : State the two methods of Hot dipping. 

Last Answer : Two methods of hot dipping-1. Galvanizing 2. Tinning

Galvanization is the : (1) deposition of zinc on iron (2) deposition of tin on iron (3) deposition of copper on iron (4) deposition of aluminium on iron

Description : Galvanization is the : (1) deposition of zinc on iron (2) deposition of tin on iron (3) deposition of copper on iron (4) deposition of aluminium on iron

Last Answer : deposition of zinc on iron

What would happen if the protective tin coating over an iron bucket is broken in some places ?

Description : What would happen if the protective tin coating over an iron bucket is broken in some places ?

Last Answer : Ans. Iron will corrode faster as the oxidation potential of Fe is higher than that of tin. 

Galvanised Iron sheets have a coating of------ A. Tin B. Silver C. Zinc (Answer) D. Chromium

Description : Galvanised Iron sheets have a coating of------ A. Tin B. Silver C. Zinc (Answer) D. Chromium

Last Answer : C. Zinc (Answer)

Galvanised Iron sheets have a coating of (1) Tin (2) Lead (3) Zinc (4) Chromium

Description : Galvanised Iron sheets have a coating of (1) Tin (2) Lead (3) Zinc (4) Chromium

Last Answer : (3) Zinc

____ is done by dipping the fish in cold water and then freezing a layer before dipping the fish again. a. Cleaning c. Glazing b. Skinning d. Dressing

Description : ____ is done by dipping the fish in cold water and then freezing a layer before dipping the fish again. a. Cleaning c. Glazing b. Skinning d. Dressing

Last Answer : c. Glazing

spraying a peach tree,loaded with small fruit, when its hot, help to hydrate tree?

Description : spraying a peach tree,loaded with small fruit, when its hot, help to hydrate tree?

Last Answer : will spraying w/water help to hydrate fruit-laden peach tree?

Color test of water is done with an instrument called (A) Tintometer (B) Colorimeter (C) Electro-chemical cell (D) Turbidimeter

Description : Color test of water is done with an instrument called (A) Tintometer (B) Colorimeter (C) Electro-chemical cell (D) Turbidimeter

Last Answer : (A) Tintometer

Spraying should be done according to thea) direction of air b) direction of wind c) cropping patter

Description : Spraying should be done according to thea) direction of air b) direction of wind c) cropping patter

Last Answer : b) direction of wind

With the DPI method of inspection after the contact time has elapsed the dye should be removed by: a) Spraying the surface with the remover till all dye has gone then wipe with clean cloth b) Spraying with the developer then wiping with a cloth c) Wipe clean, using a clean cloth soaked in a solvent remover d) it doesn’t matter how it is done as long as all traces of dye are removed

Description : With the DPI method of inspection after the contact time has elapsed the dye should be removed by: a) Spraying the surface with the remover till all dye has gone then wipe with clean cloth b) Spraying with ... remover d) it doesn't matter how it is done as long as all traces of dye are removed

Last Answer : c) Wipe clean, using a clean cloth soaked in a solvent remover

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)

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)

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

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

I have a question about hot dip galvanizing. Is there any effect on galvanized coating if flux (zinc ammonium chloride salt) mixed inside hydrochloric acid tank instead of the normal separate hydrochloric acid tank and flux tank?

Description : I have a question about hot dip galvanizing. Is there any effect on galvanized coating if flux (zinc ammonium chloride salt) mixed inside hydrochloric acid tank instead of the normal separate hydrochloric acid tank and flux tank?

Last Answer : They should be applied separately, the acid and flux are weakening each other mixed together like that. Although they perform two separate functions in the process, both functions are necessary and are being weakened by mixing the two chemicals. You may have problems with the plating flaking off.

Drinks remain hot or cold for a long time in a thermos flask because of the (a) presence of air, which is a bad conductor of heat, in between the double walls (b) silver coating on the inside of the double walls (c) vacuum between the double walls (d) combined effects of (b) and (c)

Description : Drinks remain hot or cold for a long time in a thermos flask because of the (a) presence of air, which is a bad conductor of heat, in between the double walls (b) silver coating on the inside of the double walls (c) vacuum between the double walls (d) combined effects of (b) and (c)

Last Answer : Ans:(d)

What is your favorite dipping sauce for french fries?

Description : What is your favorite dipping sauce for french fries?

Last Answer : Mayo/siracha mixed together

Does anyone have a good dipping sauce recipe?

Description : Does anyone have a good dipping sauce recipe?

Last Answer : Ooh, ooh, I’m sending this to Kardamom!

How do you feel about double dipping?

Description : How do you feel about double dipping?

Last Answer : Vehemently against it.

When did dipping bread become uncool?

Description : When did dipping bread become uncool?

Last Answer : I don't think it's uncool. I do it. When I was younger, I dipped bread into everything like tomato juice, as well. In fact, I'd take tomato juice and bread as lunch to school (my friends tell ... just eating that. But I don't think anything is uncool (except you know, racism or rape or whatever.)

Does anyone have a recipe for a sweet dipping sauce?

Description : Does anyone have a recipe for a sweet dipping sauce?

Last Answer : Have you thought of premade frosting, warmed in the microwave?

You have one dipping sauce only. What is it?

Description : You have one dipping sauce only. What is it?

Last Answer : Chic-fil-a sauce

is there a commonly used dipping sauce for reuben sandwiches

Description : is there a commonly used dipping sauce for reuben sandwiches

Last Answer : Need Answer

When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter pointer _____________. A. fluctuating around a constant resistance reading B. dipping towards 'zero', then rising slowly C. kicking slightly downscale as voltage is applied D. continually rising as the test voltage is applied

Description : When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter pointer _____________. A. fluctuating around a ... slightly downscale as voltage is applied D. continually rising as the test voltage is applied

Last Answer : Answer: C

When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter's pointer _____________. A. dipping toward zero then raising slowly B. continually rising as test voltage is applied C. kicking slightly down scale as voltage is applied D. fluctuating around a constant resistance reading

Description : When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter's pointer _____________. A. dipping toward ... kicking slightly down scale as voltage is applied D. fluctuating around a constant resistance reading

Last Answer : Answer: C

Bananas can be prevented from over-ripening by (a) maintaining them at room temperature (b) refrigeration (c) dipping in ascorbic acid solution (d) storing in a freezer.

Description : Bananas can be prevented from over-ripening by (a) maintaining them at room temperature (b) refrigeration (c) dipping in ascorbic acid solution (d) storing in a freezer.

Last Answer : (d) storing in a freezer.

Which of the following combination of processing and preservation techniques works best for smoked products? A. Salt and acidification B. Heat, salt, dipping in brine/ minimal moisture content C. Heat, salt, acidification/minimal moisture content D. Heat and solid content

Description : Which of the following combination of processing and preservation techniques works best for smoked products? A. Salt and acidification B. Heat, salt, dipping in brine/ minimal moisture content C. Heat, salt, acidification/minimal moisture content D. Heat and solid content

Last Answer : B. Heat, salt, dipping in brine/ minimal moisture content

When replacing a power transistor fitted with a heat sink in a circuit, a coating of silicone grease is applied between the transistor case and the heat sink. This is done to ____________. A. lubricate the transistor B. lubricate the heat sink C. aid in the removal of the heat sink D. provide maximum heat transfer

Description : When replacing a power transistor fitted with a heat sink in a circuit, a coating of silicone grease is applied between the transistor case and the heat sink. This is done to ____________. A. lubricate ... the heat sink C. aid in the removal of the heat sink D. provide maximum heat transfer

Last Answer : Answer: D

Why coating of tablet is done? What are the different methods of coating?

Description : Why coating of tablet is done? What are the different methods of coating?

Last Answer : Reasons for coating: 1. To mask unpleasant taste and odour. 2. To improve the appearance of tablets. 3. To prevent the medicament from atmospheric effects. 4. To control the site of action of ... Methods of tablet coating : 1. Sugar coating: 2. Film coating 3. Enteric coating.

Conformal coating is done in PCB assemblies to

Description : Conformal coating is done in PCB assemblies to

Last Answer : Conformal coating is done in PCB assemblies to Protect electronics from Moisture and contamination

Since fuse elements are made of zinc or any alloy of tin and lead, the melting point of the fuse element must be _____________. A. higher than that of copper B. lower than that of copper C. equal to that of copper D. reached when the conductor it is protecting becomes 'white hot.'

Description : Since fuse elements are made of zinc or any alloy of tin and lead, the melting point of the fuse element must be _____________. A. higher than that of copper B. lower than that of copper C. equal to that of copper D. reached when the conductor it is protecting becomes 'white hot.'

Last Answer : Answer: B

Increased asthmatic attacks in certain seasons are related to (a) eating fruits preserved in tin containers (b) inhalation of seasonal pollen (c) low temperature (d) hot and humid environment

Description : Increased asthmatic attacks in certain seasons are related to (a) eating fruits preserved in tin containers (b) inhalation of seasonal pollen (c) low temperature (d) hot and humid environment

Last Answer : (b) inhalation of seasonal pollen

Which of the following metals cannot be hot worked at room temperature? (A) Zinc (B) Nickel (C) Lead (D) Tin

Description : Which of the following metals cannot be hot worked at room temperature? (A) Zinc (B) Nickel (C) Lead (D) Tin

Last Answer : Option B

Liquid ammonia is not used as such a fertiliser in tropical countries like India, because (A) Its N2 content is very low (B) It is very costly (C) It will evaporate on spraying (D) It is not available

Description : Liquid ammonia is not used as such a fertiliser in tropical countries like India, because (A) Its N2 content is very low (B) It is very costly (C) It will evaporate on spraying (D) It is not available

Last Answer : (C) It will evaporate on spraying

Wet chlorine gas produced during electrolysis of brine is dehydrated by (A) Spraying 66° Be H2SO4 counter current to the flow of the gas (B) Passing it through a bed of diatomaceous earth (C) Passing it through a bed of silica gel (D) None of these

Description : Wet chlorine gas produced during electrolysis of brine is dehydrated by (A) Spraying 66° Be H2SO4 counter current to the flow of the gas (B) Passing it through a bed of diatomaceous earth (C) Passing it through a bed of silica gel (D) None of these

Last Answer : (A) Spraying 66° Be H2SO4 counter current to the flow of the gas

Insulation of liquid surface can be achieved by __________ on top of its surface. (A) Floating hollow polypropylene spheres (B) Spraying alumina powder (C) Putting cement (D) None of these

Description : Insulation of liquid surface can be achieved by __________ on top of its surface. (A) Floating hollow polypropylene spheres (B) Spraying alumina powder (C) Putting cement (D) None of these

Last Answer : (A) Floating hollow polypropylene spheres

Fire in fuel gas pipelines is extinguished most effectively by (A) Spraying water (B) Blanketting the area with nitrogen atmosphere (C) Fire fighting foam (D) None of these

Description : Fire in fuel gas pipelines is extinguished most effectively by (A) Spraying water (B) Blanketting the area with nitrogen atmosphere (C) Fire fighting foam (D) None of these

Last Answer : Option B

Is it advisable to cool a fin fan by spraying demineralized water on it?

Description : Is it advisable to cool a fin fan by spraying demineralized water on it?

Last Answer : Fin fan has carbon steel tubes with aluminum fins RESPONSE In a similar service, the fin fan suffered external corrosion when spraying it with demin water. The salt and oxygen in the air ... , which should significantly lower the likelihood of cold ambient temperature causing the gas to condense.

Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than __________ mg/kg of kerosene. (A) 1 (B) 20 (C) 100 (D) 500

Description : Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than __________ mg/kg of kerosene. (A) 1 (B) 20 (C) 100 (D) 500

Last Answer : (B) 20

Agitator is provided in a crystalliser for(A) Avoiding deposition on cooler surfaces(B) Formation of nuclei(C) Crystal growth(D) All (A), (B) and (C)

Description : Agitator is provided in a crystalliser for (A) Avoiding deposition on cooler surfaces (B) Formation of nuclei (C) Crystal growth (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Alloy powder manufactured by the following process have spherical shapes. (A) Electrochemical deposition (B) Gaseous reduction (C) Atomisation (D) Mechanical attrition

Description : Alloy powder manufactured by the following process have spherical shapes. (A) Electrochemical deposition (B) Gaseous reduction (C) Atomisation (D) Mechanical attrition

Last Answer : (C) Atomisation

Powder metallurgy process does not make metal powder by (A) Atomisation (B) Grinding/milling (C) Hammering (D) Electrolytic deposition

Description : Powder metallurgy process does not make metal powder by (A) Atomisation (B) Grinding/milling (C) Hammering (D) Electrolytic deposition

Last Answer : Option C

The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the (A) Venturi atomiser (B) Gravity settling chamber (C) Electro-static precipitator (D) Cyclone separator

Description : The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the (A) Venturi atomiser (B) Gravity settling chamber (C) Electro-static precipitator (D) Cyclone separator

Last Answer : (C) Electro-static precipitator