Limestone is added in the blast furnace (during pig iron manufacture) to September 6, 2025 by Admin A. Form slag by combining with impurities B. Supply heat by undergoing exothermic reaction with impurities C. Reduce the coke consumption D. Reduce slag viscosity ✅ The correct answer is option A.
L.D. (Linz-Donawitz) converter is used in the production of September 6, 2025 by Admin A. Copper B. Steel C. Zinc D. Aluminium ✅ The correct answer is option B.
A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its September 6, 2025 by Admin A. Aqueous tension B. Saturated humidity C. Vapor pressure D. Absolute humidity ✅ The correct answer is option A.
Which of the following fastening devices has its both ends threaded? September 6, 2025 by Admin A. Bolt B. Stud C. Set screw D. Split nut ✅ The correct answer is option B.
Desert air coolers being rendered ineffective in rainy season is due to September 6, 2025 by Admin A. Low humidity B. Low temperature C. High humidity D. Sunny weather ✅ The correct answer is option C.