Related InterviewSolutions

• Bessemer converter is used for Atomic nos, `Mn = 25, Fe = 26, Co = 27, Ni = 28`A. Pig ironB. SteelC. Wrought ironD. Cast iron
• Electrolytic reduction method is used fro the extraction ofA. Highly electronegative elementB. Transition metalC. MetalloidsD. Highly electropositive element
• The chemical formula of diaspore an ore of alumium isA. `Al_(2)O_(3).H_(2)O`B. `Al_(2)O_(3)`C. `Al_(2)O_(3).2H_(2)O`D. `Al(OH)_(3)`
• Extraction of zinc from zinc blende is achieved by:A. electrolytic reductionB. roasting following by reduction with carbonC. roasting followed by reduction with another metalD. roasting followed by self-reduction
• Two prevent corrosion iron pipes carrying drinking water are coated with zinc. The process involved isA. Alloy formationB. ElectroplatingC. GalvanisingD. Soldering
• Blister copper is:A. Pure copperB. Copper containing 2% impurityC. Alloy of copperD. None
• Spelter isA. Impure CuB. Impure ZnC. ZnOD. CuO
• Red how steel rod on suddenly immersing in water becomesA. Soft and malleableB. Hard and brittleC. Tough and ductileD. Fibrous
• Which statement about corrosive sublimate is incorrect ?A. It is prepared by heating mercury and chlorineB. It reduce stannic chlorideC. It oxidises stannous chlorideD. It sublimes readily
• Polling process us used in the purification ofA. GeB. BiC. CuD. Fe