- (A) Higher firing temperature
- (B) Higher moulding pressure
- (C) Finer grog size
- (D) All
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- (A) Thermal spalling
- (B) Slag attack
- (C) Fusion under load
- (D) CO attack
- (A) Superduty fireclay
- (B) Silica
- (C) Chromite
- (D) None of these
- (A) Fireclay
- (B) Silica
- (C) Chrome magnesite
- (D) Zirconia
- (A) Not required to resist the corrosive action of basic slag
- (B) Not subjected to fluctuation in temperature
- (C) Used for raising & maintaining high temperature
- (D) Both
- (A) Cork
- (B) Saw dust
- (C) Sand
- (D) Chemically prepared foam
- (A) Oxidising atmosphere
- (B) Reducing atmosphere
- (C) Electric furnace
- (D) Neutral atmosphere
- (A) Increases
- (B) Decreases
- (C) Remain same
- (D) May increase or decrease
- (A) Density
- (B) Specific heat
- (C) Thermal conductivity
- (D) None of these
- (A) Reduced by the addition of acid oxides
- (B) Increased by the addition of acid oxides
- (C) Not affected by the addition of acid oxides
- (D) Always less than 1000°C
