Related Questions

Combined carbon content in iron and steel is determined by treating the sample with dilute HNO3. So that combined carbon forms a soluble brown nitrated compound, the intensity of which is matched with that of a standard sample of similar composition treated under similar condition. The intensity of color produced is proportional to the carbon content of iron of steel sample. This method of combined carbon determination is called the
Consider the following statements
1. Galvanisation is the method of protecting steel and iron fromrusting by coating them with a thin layer of zinc.
2. Pure iron is very soft but if it is mixed with a small amount of carbon, it becomes hard and strong.
3. When iron is mixed with nickel and chromium, we get stainless steel, which is hard and does not rust.
Which of the statements given above are correct?
“The creatures outside looked from pig to man, and from man to pig, and from pig to man again; but already it was impossible to say which was which.”
Out of the total production of iron from hematite, an ore of Iron, 20% of the ore gets wasted, and out of the remaining iron, only 25% is pure iron. If the pure iron obtained in a year from a mine of hematite was 80,000 kg, then the quantity of hematite mined from that mine in the year is
The cost of raw materials of a product increases by 30%, the manufacturing cost increases by 20% and the selling price of the product increases by 60%. The raw material and the manufacturing cost originally formed 40% and 60% of the total cost respectively. If the original profit percentage was one - fourth the original manufacturing cost, find the approximate new profit percentage.
Which of the following statements are true with respect to iron ore?
I. Limestone and coal are important for smelting iron ore
II. More than 20% of the world iron ore deposits are in India
III. Odisha and Jharkhand top in the production of iron ore
IV. Iran is the largest buyer of Indian iron ore
If you need 98 ounces of iron and 2 ounces of carbon to make a sheet of steel. How much iron you need in ounces to make 12 sheet steel?
The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon.
A double-ended queue supports operations like adding and removing items from both the sides of the queue. They support four operations like addFront(adding item to top of the queue), addRear(adding item to the bottom of the queue), removeFront(removing item from the top of the queue) and removeRear(removing item from the bottom of the queue). You are given only stacks to implement this data structure. You can implement only push and pop operations. What’s the time complexity of performing addFront and addRear? (Assume ‘m’ to be the size of the stack and ‘n’ to be the number of elements)
The two surfaces of a 5 mm thick plate of carbon steel are maintained at a carbon concentration of 104 mol. m-3 on one side and zero concentration on the other side. Taking the diffusion coefficient of carbon in austenite to be 10-11 m-2.s-1, the steady state flux (mol.m-3.s-1) through the thickness of the steel is