In gray iron castings of facing sand mixtures, what is the bentonite percentage composition?(a) 2-3%(b) 3-4%(c) 4-5%(d) 5-6%This question was posed to me in unit test.My query is from Molding Sand Mixtures for Casting topic in chapter Molding and Core Sands of Casting-Forming-Welding I

In gray iron castings of facing sand mixtures, what is the bentonite p

1.	In gray iron castings of facing sand mixtures, what is the bentonite percentage composition?(a) 2-3%(b) 3-4%(c) 4-5%(d) 5-6%This question was posed to me in unit test.My query is from Molding Sand Mixtures for Casting topic in chapter Molding and Core Sands of Casting-Forming-Welding I
Answer» Correct ANSWER is (a) 2-3% The explanation is: In gray cast irons of facing sand mixtures, the bentonite percentage composition is CALCULATED to be 2-3%. Whereas, in the case of GREEN SANDS, the bentonite percentage is recorded to be around 3.5%.

Discussion

No Comment Found

Related InterviewSolutions

Which of the following components of soil are acts as chemical sponges in the soil?(a) Clay minerals(b) Silica(c) Sodium(d) PotassiumThis question was posed to me in an online quiz.This intriguing question originated from Fire Clays, Illite and Kaolinite topic in portion Molding and Core Sands of Casting-Forming-Welding I
Good friability is one of the properties of core sand.(a) True(b) FalseThis question was addressed to me in a national level competition.My question comes from Indian Sand and core sand topic in chapter Molding and Core Sands of Casting-Forming-Welding I
In which of the following bonding theory, water molecules break down to form H+ and OH- ions?(a) Electrostatic bonding theory(b) Hot strength theory(c) Surface tension theory(d) Block and wedge theoryThe question was asked by my college professor while I was bunking the class.The above asked question is from Bonding Theory in portion Molding and Core Sands of Casting-Forming-Welding I
Which of the following sand is freely available?(a) Silica sand(b) Zircon(c) Olivine(d) DolomiteI have been asked this question in an international level competition.My doubt stems from Refractory Sands in section Molding and Core Sands of Casting-Forming-Welding I
Which of the following is the most porous sand?(a) Silica sand(b) Zircon(c) Olivine(d) DolomiteI had been asked this question in an international level competition.The above asked question is from Refractory Sands topic in division Molding and Core Sands of Casting-Forming-Welding I
Illite has a softening point of about 4500°F.(a) True(b) FalseThis question was posed to me in semester exam.The doubt is from Molding Sands Binders in chapter Molding and Core Sands of Casting-Forming-Welding I
What is the breadth size range of a clay particle?(a) 0.01-1 micrometres(b) 0.02-2 micrometres(c) 0.03-3 micrometres(d) 0.04-4 micrometresThe question was asked in class test.This is a very interesting question from Molding Sands Binders topic in section Molding and Core Sands of Casting-Forming-Welding I
On increasing the binder content, what in the moulding sand gets reduced?(a) Hardenability(b) Strength(c) Permeability(d) BrittlenessI got this question in an online quiz.My query is from Molding Sands Binders in portion Molding and Core Sands of Casting-Forming-Welding I
The figure below shows which foundry sand grain shape?(a) Round(b) Sub angular(c) Angular(d) CompoundThe question was posed to me in class test.Enquiry is from Molding Sands in division Molding and Core Sands of Casting-Forming-Welding I
The figure below shows which foundry sand grain shape?(a) Round(b) Sub angular(c) Angular(d) CompoundThe question was asked during an internship interview.The origin of the question is Molding Sands in section Molding and Core Sands of Casting-Forming-Welding I

In gray iron castings of facing sand mixtures, what is the bentonite percentage composition?(a) 2-3%(b) 3-4%(c) 4-5%(d) 5-6%This question was posed to me in unit test.My query is from Molding Sand Mixtures for Casting topic in chapter Molding and Core Sands of Casting-Forming-Welding I

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment