A. An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide) B. Iron impregnated with resin (usually Bakelite) C. Carbon free iron D. None of these...
A. Acid resistant, brittle and very hard B. High silicon iron C. Prone to breakage due to thermal expansion because of its very high co-efficient of thermal expansion D. All A., B. and C....
Recent Comments