JEE Main 202126 AugustEvening Shift
- Exam
- JEE Main
- Year
- 2021
- Date
- 26 August
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- General Principles and Processes of Isolation of Metals
JEE Main 2021 · 26 August · Evening Shift · Chemistry · General Principles and Processes of Isolation of Metals
Given below are two statements: Statement I : Sphalerite is a...
Given below are two statements:
Statement I : Sphalerite is a sulphide ore of zinc and copper glance is a sulphide ore of copper.
Statement II : It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using 'depressants' in a froth flotation method.
Choose the most appropriate answer from the options given below :
Statement I : Sphalerite is a sulphide ore of zinc and copper glance is a sulphide ore of copper.
Statement II : It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using 'depressants' in a froth flotation method.
Choose the most appropriate answer from the options given below :
Options
- AStatement I is true but Statement II is false.
- BBoth Statement I and Statement II are true.
- CBoth Statement I and Statement II are false.
- DStatement I is false but Statement II is true.
Correct answer
B. Both Statement I and Statement II are true.
Step-by-step solution
Sphalerite is
Copper glance is
It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using 'depressants'. For example, in case of an ore containing and , the depressant used is . It selectively prevents from coming to the froth but allows to come with the froth.