General Knowledge - General Science - Discussion


The gases used in different types of welding would include

[A]. oxygen and hydrogen
[B]. oxygen, hydrogen, acetylene and nitrogen
[C]. oxygen, acetylene and argon
[D]. oxygen and acetylene

Answer: Option D


No answer description available for this question.

Salman said: (Feb 11, 2011)  
Because oxygen react with acetylene and form oxyacetylene gas which helps in welding process.

Sonali Naha said: (Aug 27, 2011)  
O2 + C2H2---> Oxyacetylene gas and very hot temperature. this temperature helps to welding.

Abhirami said: (Aug 30, 2011)  
Because oxygen react with acetylene and form oxyacetylene gas and hot temperature which is very helpful in welding process.

Pkm said: (Aug 31, 2011)  
Oxygen react with acetylne and forms diff types of flame which is at very high temp.

Vishal said: (Sep 1, 2011)  
Argon is also used guys... not only oxygen and acetylene... correct answer is C

Shamsul said: (Sep 7, 2011)  
After reaction between 02 and C2H2 the Oxyacetyline flame is produced.Which can produced the temperature approx 2500-3000 degree.

Sanjana said: (Oct 10, 2011)  
In welding process we will use three methods.

1. Thermal welding.

2. Electric arc welding.

3. Gas welding.

In gas welding the most widely used method is OXY-ACETYLENE welding.

Monik said: (Mar 8, 2012)  
Oxy-hydrogen is also suitable for welding because it is 2800 celsius and oxy-acetylene flame is 3300 celsius.

Krishan said: (Apr 19, 2012)  
I'm agree with vishal now-a-days argon gas is used in industries

Abp said: (Jun 5, 2012)  
Argon is used to provide a inert atmosphere surrounding the welding.

Sunny Chopra said: (Jun 27, 2012)  
In welding we use oxygen and acetylene because acetylene provides a comparatively higher temperature.

Sachin said: (Aug 15, 2012)  
What is acetylene?

Pramod said: (Sep 28, 2012)  
Acetylene is a alkynne (CH-=CH). It is a gas.

R D said: (Jan 21, 2013)  
It is also called as oxyacetylene gas and has ability to create very high temperature.

R K said: (Jun 11, 2013)  
Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding, or gas welding in the U.S.) and oxy-fuel cutting are processes that use fuel gases and oxygen to weld and cut metals, respectively. French engineers Edmond Fouché and Charles Picard became the first to develop oxygen-acetylene welding in 1903. Pure oxygen, instead of air (20% oxygen/80% nitrogen), is used to increase the flame temperature to allow localized melting of the workpiece material (e.g. steel) in a room environment. A common propane/air flame burns at about 3,630 °F (2,000 °C), a propane/oxygen flame burns at about 4,530 °F (2,500 °C), and an acetylene/oxygen flame burns at about 6,330 °F (3,500 °C).

Shaik Iqbal Kazim said: (Aug 16, 2013)  
Its oxyacetylene gas which melts metals like iron steel etc. So right answer is option D.

Nilima said: (Sep 21, 2013)  
For welding of metals such as Mg, Al inert atmosphere is necesarry To create this argon, neon also used.

Kripal Mondal said: (Jan 20, 2014)  
Argon is also widely used for welding.

Vinay said: (Feb 2, 2014)  
oxygen react with acetylene form oxy acetylene which produces a very high temperature

Garima said: (Apr 9, 2014)  
Bcoz, acetylene burns in oxygen gas producing oxy-acetylene flame which has temp above 3000 degrees. So it is used for welding.

Deep said: (May 15, 2014)  
But in heavy fabrication units co2 and argon mixture is also use for MS welding. And for SS welding pure ARGON gas is use.

Veeras said: (Jun 8, 2014)  
ALSO, HYDROGEN gas is used in atomic hydrogen welding for shielding the weld zone. Hence protecting the welded part from oxidation or contamination.


Best resembling option will be option C.

Anjali Jasotani said: (Jul 13, 2014)  
Mixture of oxygen and acetylene helps in welding process.

Deepa Gupta said: (Sep 9, 2014)  
Mixture of oxygen and acetylene forms oxyacetylene gas which helps in welding process.

Venki said: (Nov 21, 2014)  
What is thermal welding?

Abhishek said: (Feb 2, 2015)  
Argon gas also used, now these days argon gas used in welding. So correct answer C.

Abhay said: (Feb 26, 2015)  
Argon being inert gas used to cover welded portions to protect it from oxidation.

Chima said: (Jul 2, 2015)  
Depending on the type of welding, Oxygen can be used in combination with a gaseous fuel (acetylene or hydrogen). Argon is used as the shielding gas, which helps to protect the weld from any external interference.

Navneet Yadav said: (Jul 17, 2015)  
Correct option is (C). Because argon is used in tungsten inert gas welding as a shielding gas to protect weld pool.

Dheraj Patidar said: (Jul 27, 2015)  
Guys correct answer is c. Because argon is also used in tungsten arc welding.

Nikita Mohanty said: (Aug 8, 2015)  
Hello correct answer because is used in tungsten arc welding.

Princess said: (Aug 15, 2015)  
What is the meaning of welding?

Darshit Sharma said: (Aug 27, 2015)  
Welding means to join the metals sometime by melting and sometime by lighting.

Vishalauuport said: (May 7, 2016)  
You are correct @Vishal.

Argon is for shielding as it is a inert gas.

Leki said: (Sep 14, 2016)  
Can we mix argon, oxygen, and acetylene for welding?

Shivam said: (Nov 10, 2016)  
What is correct answer B or C?

Chirag said: (Dec 1, 2016)  
Argon is also used in ss welding.

Abhinas said: (Feb 24, 2017)  
According to me,

Argon is inert gas therefore if the O and acetylene will react then it will more producing temperature. Hence, the answer would D.

Rintu Mondal said: (Apr 6, 2017)  
I think the answer is option ''C''.

Akshita Badoni said: (Apr 8, 2017)  
Because oxygen react with acetyle and form oxyacetylence gas which help in welding and also form different type of flames which is at very high temperature.

Kundon said: (Sep 22, 2017)  
It is also known as oxy acetylene flame it is of temp of 3700 degree celcius.

Nishant Sengupta said: (Dec 8, 2017)  
A weld is done so it stays welded and intact without undergoing oxidation, leading to failure. Therefore a protective coating of inert gas (which is usually CO2 or Argon) is used, INEVITABLY, or else the welding is either underwater or in a vacuum. Hence, I Believe [C] should be the right answer.

Sanjay said: (Jan 17, 2018)  
But on the other hand, argon welding is contain argon gas.

Palash Das said: (Feb 26, 2018)  
No, the Correct answer is "c".

Anju said: (Apr 14, 2018)  
I think that when oxygen and acetylene are proper to welding than why to add extra argon gas, it's costly.

Biku said: (Apr 26, 2018)  
No, D is the right answer.

Prashu said: (Jul 6, 2018)  
Oxygen react with acetylne and forms diff types of flame which is at very high temp.

Shwetha said: (Aug 9, 2018)  
Because oxygen reacts with acetylene in presence high temperature and it helps easy to welding.

Chaitanya said: (Feb 21, 2019)  
Carbon dioxide, Argon and helium gases are also used in welding. They act as shielding gases and prevent oxidation of the molten pool.

Ansaf A Malik said: (Mar 12, 2019)  
Argon also used for welding.

So the correct option is C.

Anomi said: (Mar 21, 2019)  
Argon gas is also used in TIG welding.

Rishabh said: (Aug 11, 2019)  
In steel welding (normally in our houses' stairs greelings) argon gas is used.

Santosh Kumar Swain said: (Jan 20, 2020)  
It is D, because other than oxygen and acetylene, LPG, hydrogen also use in gas welding and argon and nitrogen also use in TIG, MIG welding because inert gas acts as sealing medium which prevents oxidation.

Amrendra Singh said: (Mar 7, 2020)  
The most commonly used gas basis welding is organ wielding oxygen and acetylene used in large industry so option C is right.

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