What is electro polishing?

What is electro polishing?
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Answer :

Electro polishing is an electrochemical process that removes material from a metallic article. It is the reverse of electroplating.
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Related questions

Explain electro polishing.

Description : Explain electro polishing.

Last Answer : The article to be electro polished is taken as anode in the electrolytic bath with copper or lead cathode and a suitable electrolyte. When direct current is passed through the electrolyte, the ... the anode is electro polished. Ex: Sandwiched cookers are manufactured by the electro polishing method.

What is the aim of electroplating?

Description : What is the aim of electroplating?

Last Answer : The aim of electroplating is to give the articles made of one metal a coating of another metal either to improve the appearance or to protect it against rusting and tarnishing.

What is electroplating?

Description : What is electroplating?

Last Answer : Electroplating is the process of plating one metal onto another by passing current through the electrolyte.

Mention the applications of electrolysis.

Description : Mention the applications of electrolysis.

Last Answer : a) Electroplating b) Electrotyping c) Purification of metals d) Decomposition of salts e) Electro polishing f) Manufacture of certain chemicals like caustic soda.

Write the value of Faraday’s constant.

Description : Write the value of Faraday’s constant.

Last Answer : The value of Faraday’s constant is 96,500 coulomb/mole.

Define Faraday’s constant.

Description : Define Faraday’s constant.

Last Answer : Faraday’s constant is defined as the ratio of chemical equivalent to electrochemical equivalent of a substance.

State Faraday’s second law of electrolysis.

Description : State Faraday’s second law of electrolysis.

Last Answer : “The masses of different substances liberated by the same quantity of electricity are proportional to their chemical equivalents”.

On what factors does the amount of deposition in electrolysis depend?

Description : On what factors does the amount of deposition in electrolysis depend?

Last Answer : The amount of deposition depends on the a) Current b) Time c) Nature of substance

State Faraday’s first law of electrolysis.

Description : State Faraday’s first law of electrolysis.

Last Answer : “The mass of substance deposited or collected at either electrode during electrolysis is proportional to the current and to the time”.

What are cations?

Description : What are cations?

Last Answer : Cations are atoms that have lost an electron to become positively charged.

What are anions?

Description : What are anions?

Last Answer : Anions are a group of atoms that have gained electrons. They have a negative charge.

What are ions?

Description : What are ions?

Last Answer : A group of charged atoms are called ions.

State Arrhenius theory of dissociation.

Description : State Arrhenius theory of dissociation.

Last Answer : “The molecules of an electrolyte in aqueous solution break into ions”

What are non-electrolytes? Give example

Description : What are non-electrolytes? Give example

Last Answer : Substances which do not conduct electricity are called non-electrolytes. Ex: Sugar solution, distilled water etc.

What are weak electrolytes? Give example

Description : What are weak electrolytes? Give example

Last Answer : Electrolytes that dissociate partially are called weak electrolytes. Ex: Vinegar, carbonic acid, phosphoric acid and organic acids like acetic acid, formic acid etc.

What are strong electrolytes? Give example

Description : What are strong electrolytes? Give example

Last Answer : Electrolytes that dissociate almost completely are called strong electrolytes. Ex: Ionic compounds like Sodium chloride, copper sulphate, covalent compounds, hydrochloric acid, nitric acid, sulphuric acid.

How are electrolytes classified?

Description : How are electrolytes classified?

Last Answer : Electrolytes can be classified into: a) Strong electrolytes b) Weak electrolytes c) Non electrolytes

Give examples of substance through which electrolytic conduction occurs.

Description : Give examples of substance through which electrolytic conduction occurs.

Last Answer : a) Salts in molten state Ex: Sodium chloride, Calcium chloride, lead bromide etc. b) Aqueous solutions of sodium sulphate, copper sulphate etc. c) Bases Ex: Sodium hydroxide, Potassium hydroxide etc. d) Aqueous solutions of acids Ex: Hydrochloric acid, sulphuric acid etc.

Give examples of substances through which metallic conduction occur.

Description : Give examples of substances through which metallic conduction occur.

Last Answer : a) All metals Ex: Iron, Aluminium, Copper, Mercury etc. b) All alloys Ex: Brass, Bronze, and Steel etc. c) Graphite

State the types of conduction of electricity.

Description : State the types of conduction of electricity.

Last Answer : a) Metallic conduction b) Electrolytic conduction

What is an electrolyte?

Description : What is an electrolyte?

Last Answer : The chemical substances that conduct electricity in aqueous state or molten state are called electrolytes.

What is meant by electrolytic solutions?

Description : What is meant by electrolytic solutions?

Last Answer : The aqueous solutions in in which chemical reactions occur when direct current is passed are called electrolytic solutions.

What is electrolytic conduction?

Description : What is electrolytic conduction?

Last Answer : The type of conduction in which cations and anions participate in the flow of electricity in molten state or aqueous solution of salt is called as electrolytic conduction.

What is electronic conduction?

Description : What is electronic conduction?

Last Answer : The type of conduction which is due to the flow of delocalised electrons is known as electronic conduction.

Name the two types of electric conduction.

Description : Name the two types of electric conduction.

Last Answer : The two types of electrical conduction are: a) Electric conduction due to flow of delocalised electrons. b) Electrical conduction due to flow of ions

The vitamin present in rice polishing is?

Description : The vitamin present in rice polishing is?

Last Answer : Vitamin B2 RADIO ACTIVITY

Polishing silver without silver polish?

Description : Polishing silver without silver polish?

Last Answer : answer:it’s here I’ve tried it and it does work!

Why diatoms are used in filtration and polishing?

Description : Why diatoms are used in filtration and polishing?

Last Answer : Why diatoms are used in filtration and polishing?

The luster of a metal is due to - (1) high polishing (2) high density (3) chemical inertness (4) presence of free electrons

Description : The luster of a metal is due to - (1) high polishing (2) high density (3) chemical inertness (4) presence of free electrons

Last Answer : (4) presence of free electrons Explanation: Lustre or luster is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the Latin lux, meaning "light", and generally implies radiance, gloss, or brilliance.

Pollution by particulate matter emission in the atmosphere does not take place during metal (A) Grinding (B) Machining(C) Cutting(D) Polishing

Description : Pollution by particulate matter emission in the atmosphere does not take place during metal (A) Grinding (B) Machining (C) Cutting (D) Polishing

Last Answer : (D) Polishing

Deep ponds, in which oxygen is absent except, perhaps, across a relatively thin surface layer, are called : (a) Aerobic ponds (b) Anaerobic ponds (c) Facultative ponds (d) Polishing ponds

Description : Deep ponds, in which oxygen is absent except, perhaps, across a relatively thin surface layer, are called : (a) Aerobic ponds (b) Anaerobic ponds (c) Facultative ponds (d) Polishing ponds

Last Answer : (b) Anaerobic ponds

The MAIN purpose of burnishing is: A. To help eliminating excess mercury (condensing) B. To condense margins C. Polishing of filling

Description : The MAIN purpose of burnishing is: A. To help eliminating excess mercury (condensing) B. To condense margins C. Polishing of filling

Last Answer : B. To condense margins

Give the uses of granite & marble polishing waste.

Description : Give the uses of granite & marble polishing waste. 

Last Answer : Uses of granite & marble polishing waste : 1. Used as fine aggregate in mortar & concrete. 2. Used in manufacturing of bricks. 3. Used inmanufacturing of artificial stone. 4. Used inmanufacturing of paving blocks. 

Give any two uses of granite and marble polishing waste.

Description : Give any two uses of granite and marble polishing waste.

Last Answer : Use of granite and marble polishing waste. 1. It is used in manufacturing of brick and tiles 2. It is used for filling joints in flooring. 3. It is used in self-compacting concrete.

Who in 1786 invented the gold leaf electro scope?

Description : Who in 1786 invented the gold leaf electro scope?

Last Answer : Answer: Abraham Bennet.

Electro magnetic radiation is emitted by (a) X-ray (b) Electrons (c) Ultrasonic (d) Protons

Description : Electro magnetic radiation is emitted by (a) X-ray (b) Electrons (c) Ultrasonic (d) Protons

Last Answer : Ans:(b)

Electro negative elements means:?

Description : Electro negative elements means:?

Last Answer : An atom that gains one or more electrons

Electro positive elements means:?

Description : Electro positive elements means:?

Last Answer : An atom that loses one or more electrons

The element having highest reactivity or electro-negativity?

Description : The element having highest reactivity or electro-negativity?

Last Answer : Fluorine

The elements which have least electro negativity?

Description : The elements which have least electro negativity?

Last Answer : Francium; Caesium

The element which has most electro neg- ativity?

Description : The element which has most electro neg- ativity?

Last Answer : Fluorine

Electro negativity scale was invented by?

Description : Electro negativity scale was invented by?

Last Answer : Linus Pauling

Electro negativity was discovered by?

Description : Electro negativity was discovered by?

Last Answer : Linus Pauling

The most electro positive stable element?

Description : The most electro positive stable element?

Last Answer : Cesium

State Faraday’s first law of electro-magnetic induction.

Description : State Faraday’s first law of electro-magnetic induction.

Last Answer : Whenever a magnetic field linked with a conductor changes, an induced e.m.f is generated in the conductor.

Atoms which receive electrons easily are called electro

Description : Atoms which receive electrons easily are called electro

Last Answer : negative.

Taking first period and 17 th group of the periodic table, write gradation of properties with respect to the following: a) atomic size b) Ionisation energy c) electro positivity and electro negativity.

Description : Taking first period and 17 th group of the periodic table, write gradation of properties with respect to the following: a) atomic size b) Ionisation energy c) electro positivity and electro negativity.

Last Answer : The elements of 1 st period are hydrogen and helium. a) Atomic size of hydrogen is larger then that of helium because atomic size decreases across a period. b) Ionisation energy of helium ... higher as it increases down the group. Electro negativity of fluorine as it decreases down the group.

Nitrogen (atomic number 7) and Phosphorous (atomic number 15) belong to group 15 of the periodic table. Which of these will be more electro negative? Why?

Description : Nitrogen (atomic number 7) and Phosphorous (atomic number 15) belong to group 15 of the periodic table. Which of these will be more electro negative? Why?

Last Answer : Nitrogen will be more electro negative as it decreases down the group.

How does electro positivity and electro negativity vary across a period and down a group?

Description : How does electro positivity and electro negativity vary across a period and down a group?

Last Answer : Electro positivity decreases along a period and increases down the group. Electro negativity increases a period and decreases down the group. Electro positivity

What is meant by electro negative?

Description : What is meant by electro negative?

Last Answer : Atoms which accept electrons easily are called electro negative. Ex; Chlorine.