Purity of electrical grade aluminium should be ≥ _____________ percent?

Related Mcqs:

Bog iron used for the adsorption of H2S from coke oven gas is___________________?

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...

Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system ?

A. High silicon iron, silicon rubber, Kel-F and Teflon B. Mild steel and stainless steel C. Cast iron, tin and aluminium D. Copper, nickel and Monel...

The hardest material just prior to diamond in Mhos scale is_________________?

A. Topaz B. Carborundum C. Corundum D. Calcite...

The ‘bomb’ in the bomb calorimeter is made of___________________?

A. Molybdenum stainless steel B. Mild steel C. High silicon iron (14% Si) D. Copper...

Fatigue failure of a material results from ______________ stress?

A. Tensile B. Compressive C. Fluctuating D. None of these...