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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
How much carbon does hypoeutectoid steel contain?
What does the term ‘carbon count’ means? 1. A measure of the amount of carbon dioxide you produce through your lifestyle every day. 2. A measure of the amount of carbon present on Earth. 3. A measure of the amount of carbon and carbon dioxide on Earth. Select the correct answer using the code given below.
In annealing process, for the formation of hypoeutectoid steel, the steel has to be heated above what point?
Cooling of hypoeutectoid steel post heating forms __________ ferrite.
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
In normalizing of hypoeutectoid steel, the component is heated to a temperature above _____
Which one of the following statements is incorrect ? (a) Every living organism takes C - 14 through carbon. (b) Every living being has the same proportion of carbon 14. (c) After death every living organ throws same percentage of carbon. (d) After 5568 yrs of death half of C - 14 will disappear - which is called as half life of Carbon - 14. (e) The method is used to get chronological evidence of archaeological remain. (f) This method was invented by F.W. Liby. (g) He got Nobel prize in physics for this work.
Which of the following options are correct? 1. Three carbon atom is indicated by 'prop'. 2. Four carbon atom is indicated by 'but'. 3. Seven carbon atom is indicated by 'Hex'. 4. Nine carbon atom is indicated by 'Non'.
Which of the following statement(s) is/are CORRECT? I. Carbon compounds linked by only single bond are called saturated compounds. II. Carbon compounds having double or triple bonds are called unsaturated compounds. III. Saturated carbon compounds are more reactive than unsaturated carbon compounds.