83.
Match the facilities in a steel plant in Group 1 with the associated terms listed in Group 2.
Group 1 Group 2
P. Electric arc furnace 1. High top pressure
Q. L-D converter 2. Dummy bar
R. Continuous caster 3. Slag splashing
S. Blast furnace 4. Eccentric bottom tapping

84.
Given the following Assertion 'A' and the Reason 'R'; the correct option is
Assertion A: Phosphorous removal in steel making is favoured by basic slag.
Reason R: Basic slag decreases the activity of P2O5 in the slag.

87.
What are the common uses of Duplex (Austenitic-Ferritic) stainless steels