Purity of electrical grade aluminium should be ≥ __________ percent. (A) 95 (B) 99.5 (C) 85 (D) 90

Purity of electrical grade aluminium should be ≥ __________ percent.
(A) 95
(B) 99.5
(C) 85
(D) 90
by

1 Answer

Answer :

(B) 99.5
by

Related questions

Water comprises approximately ____ percent of cleaning and sanitizing solutions. a. 80 to 89 c. 90 to 95 b. 95 to 99 d. 75 to 85

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Last Answer : b. 95 to 99

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Description : A sample of natural gas containing 80% methane (CH4 ) and rest nitrogen (N2 ) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the remainder going to CO, the Orsat analysis in volume percent is (A) CO2 : 6 ... 96, N2 :72.06 (D) CO2 : 7.60, CO : 1.90, O2 : 4.75, N2 : 85.74

Last Answer : (B) CO2 : 7.42, CO : 1.86, O2 : 4.64, N2 :86.02

Electrolytic reduction cell used for conversion of calcined Al2O3to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to (A) Achieve very high purity of aluminium (99.9%) (B) Keep the electrolyte in liquid condition by the generation of heat (C) Electrolytically dissociate alumina (D) Both (B) & (C)

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Last Answer : (C) 95

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Last Answer : (C) 85

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Last Answer : (C) 70

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Last Answer : The answer is e) none. You cannot rid non-response bias.

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