What is Glass Electrode pH Meter ?

What is Glass Electrode pH Meter ?
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Answer :

A cell is formed by combining a glass electrode and a proof calomel electrode (indicating electrode) to which a fine voltmeter is connected and the pH meter is shown as the pH meter is shown instead of the volt unit in the recorder.
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Colour comparator is used to measure the (A) pH value (B) Electrode potential (C) Colour intensity (D) None of these

Description : Colour comparator is used to measure the (A) pH value (B) Electrode potential (C) Colour intensity (D) None of these

Last Answer : Option A

An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall". This is the working principle of a (A) pH meter (B) Polarimeter (C) Chromatograph (D) Polarograph

Description : An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall". This is the working principle of a (A) pH meter (B) Polarimeter (C) Chromatograph (D) Polarograph

Last Answer : (A) pH meter

How to calibrate pH meter ?

Description : How to calibrate pH meter ?

Last Answer : The pH meter is calibrated to accurately measure pH . Three standard buffers ( 7, 4, 10) are used for this purpose. First the pH prov has to be cleaned with distilled water. The pH meter ... . This is how the pH meter is calibrated with the help of buffer solution and prepared for reading.

How Does A pH Meter Work?

Description : How Does A pH Meter Work?

Last Answer : A pH meter is basically an electronic device that canappropriately measure the acidity of a particular liquid byutilizing specific probes that are often used to examine the pH ofsubstances of a semi ... several operational amplifiersare in a backward setup and consists of a voltage around -17, atwh

How to Calibrate and Use a pH Meter?

Description : How to Calibrate and Use a pH Meter?

Last Answer : A pH meter is normally something that an environmentalist or chemist would use, but some gardeners also make use of it. This meter is used to measure the acidity and alkalinity of a specific liquid. pH ... , you should rinse it off with distilled water. To help calibrate it, it will be placed int

How can I calibrate a ph meter?

Description : How can I calibrate a ph meter?

Last Answer : The proper method of calibrating a pH Meter requires distilled water. As the water is pure you should read 7 or neutral when you read it's pH. If you don't then you need to adjust it until you do.

The apparatus used to test acidity of aqueous solution is - (1) pH meter (2) Ammeter (3) Hygrometer (4) Acidmeter

Description : The apparatus used to test acidity of aqueous solution is - (1) pH meter (2) Ammeter (3) Hygrometer (4) Acidmeter

Last Answer : (1) pH meter Explanation: A pH meter is an electronic device used for measuring the pH (acidity or alkalinity) of a liquid. A typical pH meter consists of a special measuring probe (a glass electrode) connected to an electronic meter that measures and displays the pH reading.

The pH value of sewage is determined with the help of A. Imhoff Cone B. Turbid meter C. Potentiometer D. None of these

Description : The pH value of sewage is determined with the help of A. Imhoff Cone B. Turbid meter C. Potentiometer D. None of these

Last Answer : ANS: C

The apparatus used to test acidity of aqueous solution is (1) pH meter (2) Ammeter (3) Hygrometer(4) Acidmeter

Description : The apparatus used to test acidity of aqueous solution is (1) pH meter (2) Ammeter (3) Hygrometer(4) Acidmeter

Last Answer : pH meter

Draw a neat sketch of 1-ph induction type energy meter and write operating principle of it.

Description : Draw a neat sketch of 1-ph induction type energy meter and write operating principle of it. 

Last Answer : Operating Principal:- The disc is placed between the two-flux due to pressure coil and flux due to current coil, which will set up torque on the disc which is proportional to power causing the ... is proportional to voltage, the second carries a current coil so its flux is proportional to current.

The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are

Description : The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are 8 kW and 4 kW. The power factor of the load is (A) zero (B) 0.5 (C) between zero and 0.5 (D) between 0.5 and unity

Last Answer : The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are 8 kW and 4 kW. The power factor of the load is between 0.5 and unity

(a) What are fuel cells? Explain the electrode reactions involved in the working of H2 – O2 fuel cell. (b) Represent the galvanic cell in which the reaction Zn (s) + Cu2+ (aq) → Zn2+ (aq) + Cu (s) takes place. -Chemistry

Description : (a) What are fuel cells? Explain the electrode reactions involved in the working of H2 – O2 fuel cell. (b) Represent the galvanic cell in which the reaction Zn (s) + Cu2+ (aq) → Zn2+ (aq) + Cu (s) takes place. -Chemistry

Last Answer : (a) Fuel cells : These cells are the devices which convert the energy produced during combustion of fuels like H2, CH4, etc. directly into electrical energy. The electrode reaction for H2 – O2 fuel cell : (b) The galvanic cell may be represented as Zn (s) | Zn2+ (1M) || Cu2+ (1M) | Cu (s)

What is an Earth Electrode ?

Description : What is an Earth Electrode ?

Last Answer : Puta metal part in the soil which connects to the soil is called earth electrode. Thank you all for today's electrical questions and answers.

What should be the size of the pipe electrode ?

Description : What should be the size of the pipe electrode ?

Last Answer : The size of the pipe electrode should be 36 mm diameter 2 to 2.75 m long galvanized iron or steel pipe.

An aqueous solution containing `1 M NiSO_(4) & 1 M S_(2) O_(8)^(2-)` is electrolysed using palladium electrode, at `25^(@)C` `{:(Ni^(+2)+2e^(-) rarrNi

Description : An aqueous solution containing `1 M NiSO_(4) & 1 M S_(2) O_(8)^(2-)` is electrolysed using palladium electrode, at `25^(@)C` `{:(Ni^(+2)+2e^(-) rarrNi

Last Answer : An aqueous solution containing `1 M NiSO_(4) & 1 M S_(2) O_(8)^(2-)` is electrolysed using palladium electrode, ... is `2H^(+) + 2e^(-) rarr H_(2)`

What would be the reduction potential of an electrode at 298 K , which originally contained ` 1K_(2)Cr_(2)O_(7)` solution in acidic buffer solution of

Description : What would be the reduction potential of an electrode at 298 K , which originally contained ` 1K_(2)Cr_(2)O_(7)` solution in acidic buffer solution of

Last Answer : What would be the reduction potential of an electrode at 298 K , which originally contained ` 1K_(2)Cr_(2)O_(7)` ... V` C. `1.187 V` D. None of these

A vanadium electrically, if the magnetic moment (spin only) of the vanadium product is 1.73 B.M. and the mass of electrode decreases by 102 mg during

Description : A vanadium electrically, if the magnetic moment (spin only) of the vanadium product is 1.73 B.M. and the mass of electrode decreases by 102 mg during

Last Answer : A vanadium electrically, if the magnetic moment (spin only) of the vanadium product is 1.73 B.M. and ... current efficiency 100%, At. wt. of V = 51)

What are gained or lost it the electrode?

Description : What are gained or lost it the electrode?

Last Answer : Feel Free to Answer

What does E in electrode stands for?

Description : What does E in electrode stands for?

Last Answer : Need answer

Which electrode acts as reference electrode and gives its potential value ?

Description : Which electrode acts as reference electrode and gives its potential value ?

Last Answer : Standard hydrogen electrode was taken as reference electrode whose potential is assumed zero. Nelsons equation for any cell reaction is given by. E = Eo + (2.303RT /nF) log [Oxidation form]/[reduced form]

Factors on which soil resistance depends: a) depth of the electrode b) moisture c) Nacl d) all the above

Description : Factors on which soil resistance depends: a) depth of the electrode b) moisture c) Nacl d) all the above

Last Answer : Ans: D

The emf of a primary cell depends upon the: a) Physical dimension of the cell b) Nature of the electrolyte c) Nature of the electrode d) Both (b) and (c)

Description : The emf of a primary cell depends upon the: a) Physical dimension of the cell b) Nature of the electrolyte c) Nature of the electrode d) Both (b) and (c)

Last Answer : Ans: D

(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

The voltage at the reference electrode of the circuit shown in the illustration is applied to the input of a/an ______________. EL-0090 A. class A detector whose output drives an autotransformer B. operational amplifier whose output controls a step-up voltage reactor C. amplitude modulator whose output drives an 2-stage isolation transformer D. magnetic amplifier whose output controls a saturable reactor

Description : The voltage at the reference electrode of the circuit shown in the illustration is applied to the input of a/an ______________. EL-0090 A. class A detector whose output drives an ... drives an 2-stage isolation transformer D. magnetic amplifier whose output controls a saturable reactor

Last Answer : Answer: D

When the circuit shown in the illustration is operating correctly, the voltage at the reference electrode will be kept in the optimum range of ____________. EL-0090 A. 0.01 - 0.05 volt B. 0.80 - 0.85 volt C. 35 - 60 volts D. 100 - 115 volts

Description : When the circuit shown in the illustration is operating correctly, the voltage at the reference electrode will be kept in the optimum range of ____________. EL-0090 A. 0.01 - 0.05 volt B. 0.80 - 0.85 volt C. 35 - 60 volts D. 100 - 115 volts

Last Answer : Answer: B

Electrode that is connected to the posi- tive pole of the battery is called?

Description : Electrode that is connected to the posi- tive pole of the battery is called?

Last Answer : Anode

The negative electrode is called?

Description : The negative electrode is called?

Last Answer : Cathode

Petroleum coke is used mainly in the (A) Discoloration of yellow glycerine (B) Sugar refining (C) Manufacture of carbon electrode (D) Blast furnace for reduction of iron ore

Description : Petroleum coke is used mainly in the (A) Discoloration of yellow glycerine (B) Sugar refining (C) Manufacture of carbon electrode (D) Blast furnace for reduction of iron ore

Last Answer : (C) Manufacture of carbon electrode

Maximum use of petroleum coke is in (A) Adsorption refining operation (B) Fuel gas manufacture (C) Carbon electrode manufacture (D) Iron ore reduction

Description : Maximum use of petroleum coke is in (A) Adsorption refining operation (B) Fuel gas manufacture (C) Carbon electrode manufacture (D) Iron ore reduction

Last Answer : (C) Carbon electrode manufacture

If an electric field is applied to a colloidal sol, the dispersed phase particles are found to move towards the electrode of opposite charge. If however, the dispersed phase is made stationary, the dispersion medium is found to move in the opposite direction. What is the term used for such movement of dispersion medium ?

Description : If an electric field is applied to a colloidal sol, the dispersed phase particles are found to move towards the electrode of opposite charge. If however, the dispersed phase is made stationary, the ... move in the opposite direction. What is the term used for such movement of dispersion medium ?

Last Answer : Ans. Electro osmosis. 

What does mean by grounding electrode, grounding system, and grounding resistance?

Description : What does mean by grounding electrode, grounding system, and grounding resistance? 

Last Answer : Grounding electrode: A conductor driven in the earth and used for collecting ground current from or dissipating ground current into the earth.  Grounding system: Comprises all interconnected ... current is discharged to the ground through a particular grounding electrode or grounding system. 

What is electrode?

Description : What is electrode? 

Last Answer : A conducting element used for converging (centering) current to and from a medium is called electrode. There are two types of electrode. A positive and other is negative.

What is the difference between earth resistance and earth electrode resistance?

Description : What is the difference between earth resistance and earth electrode resistance?

Last Answer : Only one of the terminals is evident in the earth resistance. In order to find the second terminal we should recourse to its definition:  Earth Resistance is the resistance existing between the ... the connection to it. (B) The contact resistance of the surrounding earth to the electrode.

A squid axon is placed on stimulating electrodes, and an intracellular electrode is inserted and connected through a cathode-ray oscilloscope (CRO) to an indifferent electrode. When the axon is stimulated, the latent period is 1.5 ms. The intracellular electrode is 6 cm form the anode of the simulator and 4.5 cm from the cathode of the simulator. What is the conduction velocity of the axon. a. 15 m/s b. 30 m/s c. 40 m/s d. 67.5 m/s e. This cannot be determined from the information given

Description : A squid axon is placed on stimulating electrodes, and an intracellular electrode is inserted and connected through a cathode-ray oscilloscope (CRO) to an indifferent electrode. When the axon is stimulated, the latent ... . 40 m/s d. 67.5 m/s e. This cannot be determined from the information given

Last Answer : 30 m/s

Deacon's method is used for the manufacture of (A) Glauber's salt (B) Common salt (C) Chlorine (D) Graphite electrode

Description : Deacon's method is used for the manufacture of (A) Glauber's salt (B) Common salt (C) Chlorine (D) Graphite electrode

Last Answer : (C) Chlorine

Pick out the wrong statement. (A) Seam welding, projection welding & spot welding are the classification of electrical resistance welding (B) Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded) (C) In spot welding, two pieces to be joined are overlapped and placed between two electrodes (D) Mild steel sheet cannot be spot welded

Description : Pick out the wrong statement. (A) Seam welding, projection welding & spot welding are the classification of electrical resistance welding (B) Electrode tip in spot welding is of copper and the ... joined are overlapped and placed between two electrodes (D) Mild steel sheet cannot be spot welded

Last Answer : (D) Mild steel sheet cannot be spot welded

Which of the following mainly decides the current to be employed is arc welding? (A) Electrode size (B) Plate thickness (C) Voltage across the arc (D) Welded portion length

Description : Which of the following mainly decides the current to be employed is arc welding? (A) Electrode size (B) Plate thickness (C) Voltage across the arc (D) Welded portion length

Last Answer : (A) Electrode size

Coating provided on the electrodes used in the arc welding is not expected to (A) Add alloying elements (B) Prevent electrode from contamination (C) Stabilise the arc (D) Provide protective atmosphere to weld

Description : Coating provided on the electrodes used in the arc welding is not expected to (A) Add alloying elements (B) Prevent electrode from contamination (C) Stabilise the arc (D) Provide protective atmosphere to weld

Last Answer : (B) Prevent electrode from contamination

Material of construction of the electrode used in the electric resistance welding is (A) Stainless steel (B) Graphite (C) Copper (D) Steel

Description : Material of construction of the electrode used in the electric resistance welding is (A) Stainless steel (B) Graphite (C) Copper (D) Steel

Last Answer : Option C

Why carbon electrode is used during electrolysis of Nacl, instead of Pt electrode?

Description : Why carbon electrode is used during electrolysis of Nacl, instead of Pt electrode?

Last Answer : Ans: During electrolysis of Nacl, chlorine gas is produced at anode. Thus to avoid it’s reaction with platinum we use carbon electrode.

A stable interface between solid _________ liquid ____________ and gaseous ___________ promotes high rate of electrode processes. a) Fuel, electrolyte, electrode b) Electrode, fuel, electrolyte c) Electrode, electrolyte, fuel d) Fuel, electrode, electrolyte

Description : A stable interface between solid _________ liquid ____________ and gaseous ___________ promotes high rate of electrode processes. a) Fuel, electrolyte, electrode b) Electrode, fuel, electrolyte c) Electrode, electrolyte, fuel d) Fuel, electrode, electrolyte

Last Answer : c) Electrode, electrolyte, fuel

Inverter cell anode and cathode of the…………. cell is used for vehicle (a) Copper electrode zinc (b)Zinc copper (c) Aluminium zinc (d)Nickel Cobalt

Description : Inverter cell anode and cathode of the…………. cell is used for vehicle (a) Copper electrode zinc (b)Zinc copper (c) Aluminium zinc (d)Nickel Cobalt

Last Answer : (a) Copper electrode zinc

The electrode for a battery must be A. A semi conductor B. An insulator C. A good conductor of electricity D. A bad conductor of electricity

Description : The electrode for a battery must be A. A semi conductor B. An insulator C. A good conductor of electricity D. A bad conductor of electricity

Last Answer : C. A good conductor of electricity

How do electrons get from the negative electrode to the positive electrode?

Description : How do electrons get from the negative electrode to the positive electrode?

Last Answer : By current flow through the load.

What is another name for the (a) positive electrode, and the (b) negative electrode?

Description : What is another name for the (a) positive electrode, and the (b) negative electrode?

Last Answer : a) The anode, (b) the cathode.

Q-9 how many electrodes are used in the TANDEM SAW? What is the polarity of the both electrode?

Description : Q-9 how many electrodes are used in the TANDEM SAW? What is the polarity of the both electrode?

Last Answer : In TANDEM SAW process there are more than one electrode is used. But for first electrode alternative current and for second electrode direct current shall be used.

Q-2 what are the functions of electrode covering in SMAW process?

Description : Q-2 what are the functions of electrode covering in SMAW process?

Last Answer : To facilitate arc ignition and give arc stability. To generate gas for shielding the arc & molten metal from air contamination. To de-oxidise the weld metal and flux impurities into the slag. To ... to support the molten weld metal). To control hydrogen contents in the weld. (basic type)

A butt weld has been made by MMA in a 50mm thick impact tested steel plate. The welding electrode used was a basic type, 5mm diameter. The measured welding parameters for one of the runs was 250 amps, 24 volts, using DC+ve polarity, and a ROL:of 180mm per min. What would be the arc energy? a) Insufficient information given to calculate the arc energy b) 1.9 kJ/mm c) 1.87 kJ/mm d) 2.0 kJ/mm

Description : A butt weld has been made by MMA in a 50mm thick impact tested steel plate. The welding electrode used was a basic type, 5mm diameter. The measured welding parameters for one of the runs was 250 amps, 24 volts, using DC ... given to calculate the arc energy b) 1.9 kJ/mm c) 1.87 kJ/mm d) 2.0 kJ/mm

Last Answer : d) 2.0 kJ/mm

What information should be recorded as a minimum, on a completed production weld? a) Size and type of electrode and b) Welding supervisor’s name c) Welder’s Identification, date and weld number d) Welding inspectors name

Description : What information should be recorded as a minimum, on a completed production weld? a) Size and type of electrode and b) Welding supervisor’s name c) Welder’s Identification, date and weld number d) Welding inspectors name

Last Answer : c) Welder’s Identification, date and weld number

What course of action should be taken upon finding a welder using incorrect shielding gas? a) Allow welding to proceed if the workmanship is good b) Report the incident and record all relevant information c) None if the tensile strength of the consumables is the same as the approved one d) Change the electrode for the correct type and continue welding

Description : What course of action should be taken upon finding a welder using incorrect shielding gas? a) Allow welding to proceed if the workmanship is good b) Report the incident and record all relevant ... the same as the approved one d) Change the electrode for the correct type and continue welding

Last Answer : b) Report the incident and record all relevant information