Home
Class 12
CHEMISTRY
Sometimes it is possible to separate two...

Sometimes it is possible to separate two sulphide ores by adjusting the proportion of oil to water or by using depressant NaCN is added to an ore conaining ZnS and PbS, what is the correct observation?

A

NaCN prevents PbS from coming to the froth but allows ZnS to come with froth

B

NaCN prevents ZnS from coming to the froth but allows PbS to come with froth

C

NaCN prevents frothing of both ZnS and PbS, hence no froth is formed

D

NaCN does not act as depressant hence a mixture of PbS and ZnS is found in froth

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NTA JEE MOCK TEST 62

    NTA MOCK TESTS|Exercise CHEMISTRY|25 Videos

  • NTA JEE MOCK TEST 64

    NTA MOCK TESTS|Exercise CHEMISTRY|25 Videos

Similar Questions

Explore conceptually related problems

Sometimes, it is possible to separate two sulphide ores by adjusting proportion of oil to water or by using depressants. In case of an ore containing ZnS and PbS, the depresent used is

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 1: Sphalerite copper glance are the sulphide ores of zinc and copper Statement 2: It is possible to separate two sulphide ores by adjusting proportion of oil to water or by using depressant

One of the processes used for concentration of ores is Froth floatation process. This process is generally used for concentration of sulphide ores. Sometimes in this process we add NaCN as a depressant. NaCN is generally added in case of ZnS and PbS minerals. what is the purpose of addition of NaCN during the process of Froth floatation?

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

Read the passage given below and answer the questions that follow. Language and culture are intertwined. A particular language usually points out to a specific group of people. When you interact with another language, it means that you are also interacting with the culture that speaks the language. You cannot understand one’s culture without accessing its language directly. When you learn a new language, it not only involves learning its alphabet, the word arrangement and the rules of grammar, but also learning about the specific society’s customs and behaviour. When learning or teaching a language, the culture where the language belongs must be referenced because language is very much ingrained in the culture. Complex is one term that you can use to describe human communication since paralanguage is used to transmit messages. Paralanguage is specific to a culture, therefore communication with other ethnic groups can lead to misunderstandings. When you grow up in a specific society, it is inevitable to learn the glances, gestures and little changes in voice or tone and other communication tools to emphasize or alter what you want to do or say. These specific communication techniques of one culture are learned mostly by imitating and observing people, initially from parents and immediate relatives and later from friends and people outside the close family circle. Body language, which is also known as kinesics, is the most obvious type of paralanguage. These are the postures, expressions and gestures used as non-verbal language. However, it is likewise possible to alter the meaning of various words by changing the character or tone of the voice. The phrase, language is culture and culture is language is often mentioned when language and culture are discussed. It’s because the two have a homologous although complex relationship. Language and culture developed together and influenced each other as they evolved. Using this context, Alfred L Krober, a cultural anthropologist from the United States said that culture started when speech was available, and from that beginning, the enrichment of either one led the other to develop further. If culture is a consequence of the interactions of humans, the acts of communication are their cultural manifestations within a specific community. Ferruccio Rossi-Landi, a philosopher from Italy whose work focused on philosophy, semiotics and linguistics said that a speech community is made up of all the messages that were exchanged with one another using a given language, which is understood by the entire society. Rossi-Landi further added that young children learn their language and culture from the society they were born in. In the process of learning, they develop their cognitive abilities as well. What constitutes a speech community?

NTA MOCK TESTS-NTA JEE MOCK TEST 63-CHEMISTRY
  1. Which of the plots is adsorption isobar for chemisorption?

    Text Solution

    |

  2. Select the correct option, among Sc(III) , Ti(IV), Pd(II) and Cu(II) i...

    Text Solution

    |

  3. Consider the following bromides The correct order of S(N)1 reacti...

    Text Solution

    |

  4. Dehydration of the following in increasing order is

    Text Solution

    |

  5. The half-life for radioactive decay of .^(14)C is 5730 years . An arch...

    Text Solution

    |

  6. Complete the missing links CH(3)CHBrCH(3) overset("alc. KOH")rarr Xo...

    Text Solution

    |

  7. The freezing point of 1 molal NaCl solution assuming NaCl to be 100% d...

    Text Solution

    |

  8. {:(COOH),(|),(COOH):}overset(NaOH)rarr X, The product (X) will be

    Text Solution

    |

  9. NaBH(4)+I(2)rarr X+Y+Z BF(3)+LiAlH(4) overset("450 K")rarr X+P BF(...

    Text Solution

    |

  10. In the following reaction, The organic product X has the structur...

    Text Solution

    |

  11. Which of the following are arranged in the decreasing order of dipole ...

    Text Solution

    |

  12. Study the structure of maltose and mark the incorrect statement.

    Text Solution

    |

  13. Work done on a ideal gas in a cylinder when it is compressed by an ext...

    Text Solution

    |

  14. Sometimes it is possible to separate two sulphide ores by adjusting th...

    Text Solution

    |

  15. Match the atomic numbers of the elements given in column I with the pe...

    Text Solution

    |

  16. The drain cleaner Drainex contains small bits of aluminium which react...

    Text Solution

    |

  17. In the complex K(4)[Th(C(2)O(4))(2)(H(2)O)(2)]. If coordination number...

    Text Solution

    |

  18. How many these compounds/Ions are aromatic here?

    Text Solution

    |

  19. How many of these metals can displace H(2) easily from acids. Fe, Mg...

    Text Solution

    |

  20. How many of these carbocations are more stable than (CH(3))(3)C^(+) ...

    Text Solution

    |