Home
Class 12
CHEMISTRY
True or false statements : (i) Sodium ...

True or false statements :
(i) Sodium cyanide is used as a depresent to separate lead sulphide from zinc sulphide.

Text Solution

Verified by Experts

The correct Answer is:
1
`ZnS` dissolves in `NaCN` to form the soluble complex.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY|Exercise Exercises (Linked Comprehension)|42 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY|Exercise Exercise (Multiple Correct)|43 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY|Exercise Exs 1.1 (Objective)|14 Videos

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Archieves Subjective|35 Videos

  • GRIGNARD REAGENTS AND ORGANOMETALLIC REAGENTS

    CENGAGE CHEMISTRY|Exercise Exercises Archives (Linked Comprehension)|1 Videos

Similar Questions

Explore conceptually related problems

Name the sulphide ores of (i) zinc (ii) lead.

Sometimes, it is possible to separate two sulphide ores by using……………….

Knowledge Check

  • Assertion: In forth floatation method, sodium ethy 1 xaanthetae is used as a collector. Reason: It helps the sulphide ore to collect on the air bubble.

    A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion is false but reason is true.

  • Consider following statements – (i) Froth floatation technique is used to concentrate sulphide ore. (ii) Froth floatation technique is based upon differential wettability of ore and impurity in water. (iii) Red Bauxite is concentrated by Bayer's process (iv) Carbon is used as reducing agent during extraction of zinc from zinc blende. Correct statements are –

    A
    (i) and (ii)
    B
    (ii) and (iii)
    C
    (i),(iii) and (iv)
    D
    All are correct

    • Similar Questions

    Explore conceptually related problems

    How does sodium cyanide act as depresant in preventing ZnS from forming the froth ?

    Name a method used to remove gangue impurity from sulphide.

    Name the substance used as depressant in the separation of two sulphide ores in Froth floatation method.

    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 :

    Mark 'T' if the statement is true and 'F' if it is false. Copper displaces zinc from zinc sulphate solution.

    Sodium cyanide solution is used to extract _____or _____from its ores.

    Home
    Profile