Which of the following statements is correct?

  • A
    Black jack is $ZnS$.
  • B
    Sulphide ores are concentrated by the froth flotation method.
  • C
    Parke's process is based on the distribution principle.
  • D
    All are correct.

Explore More

Similar Questions

Match List-$I$ with List-$II$.
List-$I$ (Industrial process) List-$II$ (Application)
$(a)$ Haber's process $(i)$ $HNO_{3}$ synthesis
$(b)$ Ostwald's process $(ii)$ Aluminium extraction
$(c)$ Contact process $(iii)$ $NH_{3}$ synthesis
$(d)$ Hall-Heroult process $(iv)$ $H_{2}SO_{4}$ synthesis

Choose the correct answer from the options given below:

Which one of the following reactions does not occur during the extraction of copper?

Brass is an alloy of copper and ......... .

Solder is an alloy of

Which of the following is $NOT$ used for the extraction of $Al$?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo