Why we used nitric acid during macro etch test of fillet weld?  

What is HNO3

Nitric acid...Nitric acid...its Called Nitric acid and its very strong corrosive in nature...The chemical compound nitric acid HNO3, also known as aqua fortis and spirit of nitre, is an aqueous solution of hydrogen nitrate anhydrous nitric acid. It is a highly corrosive and toxic acid that can cause severe burns. Colorless when pure, older samples tend to acquire a yellow cast due to the accumulation of oxides

There are seven isotopes of mercury name the most abundant isotope and its reactivity with sulphuric acid and nitric acid ?Name some important mercury salts ? ?

sulfuric acid, though oxidizing acids such as concentrated sulfuric acid and nitric acid or aqua regia dissolve it to give sulfate and nitrate and chloride. MERCURY SALTS -MERCURYICHLORIDE MERCURYIICHLORIDEMOST ABUNDANT ISOTOPE OF MERCURY IS -Hg202.REACTIVITY WITH SULPHURIC ACID-Since it is below hydrogen in the reactivity series of metals, mercury does not react with most acids, such as dilute

What is H2SO4

Hydrochloric acidNitric acid Related compounds Hydrogen sulfideSulfurous acidPeroxymonosulfuric acidSulfur trioxideOleum Supplementary data page Structure andproperties n, r, etc. Thermodynamicdata Phase behaviourSulfuric or sulphuric acid, H2SO4, is a strong mineral acid. It is soluble in water at all concentrations. It was once known as oil of vitriol, coined by the 8th-century alchemist Jabir ibn Hayyan

what is the formula of nitric acid ..?

HNO3...HNO3...HNO3...HNO3...HNO3

What is HNO3

There are seven isotopes of mercury name the most abundant isotope and its reactivity with sulphuric acid and nitric acid ?Name some important mercury salts ? ?

What is H2SO4

what is the formula of nitric acid ..?