Verified Solution • 2025–26 Session moderate

QJEEM16Ch1179: JEE Main 2016 Chemistry - Class 12 JEEM16Ch1179 Solution: Extraction of copper by smelting uses silica as an additive to…

Extraction of copper by smelting uses silica as an additive to remove :

Multiple Choice Options

  • A Cu2S
  • B FeO
  • C FeS
  • D Cu2O

Step-by-Step Verified Solution

The gangue material in the ore is removed by adding another chemical substance called flux. If ore has basic impurities, such as FeO, CaO, MgO, etc. suitable acid flux such as SiO2 , P2O5 , etc. are used. For example, in the extraction of copper, ferrous oxide (FeO), a basic impurity, is removed by adding silica. FeO (gangue) and SiO2 (flux) together form slag FeSiO3.

JEE Main 2016 (Online) 10th April Morning Slot Chemistry - Isolation of Elements Question 102 English Explanation

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring