#1 Stainless steel is an alloy of –
Stainless steel contain carbon, chromium, and nickel.
#2 The chemical used in developing photograghic films is –
In photography, silver bromide is used on photographic film, because it is unusually sensitive to light exposure.
#3 Find the odd one.
Marble, chalk and limestone are the natural forms of calcium carbonate, (CaCO3). Slaked lime is the traditional name of calcium hydroxide, Ca(OH)2.
#4 Galena is a mineral of –
Galena is a mineral of lead.
#5 Steel contains how much percentage of carbon –
The carbon content of steel is between 0.002% and 2.14% by weight.