Hamad Chemical Engineering Basics 30/05/2021 A. Number of electrons B. Oxidation number C. Number of ions D. All A , B. & C. Related Mcqs: Which of the following materials has the least scrap value ?A. Aluminium B. Stainless steel C. Brass D. Copper... Damage to metal surface by mechanical action is called____________________?A. Pitting B. Corrosion C. Erosion D. None of these... Basic open hearth furnace (BOF) is not used for producing ______________ steel?A. Killed B. Rimming C. High alloy D. None of these... Oxyacetylene reducing flame is used while carrying out welding on___________________?A. Alloy steel B. Grey cast iron C. Mild steel D. High carbon steel... The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation of ______________ mm ?A. 0.001 B. 0.01 C. 0.002 D. 0.02...
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