JEE Main & Advanced Sample Paper JEE Main Sample Paper-41

  • question_answer
    Direction: Assertion- Reason type each of these contains two statements: Statements I (Assertion), Statement II (Reason). Each of these questions also has four alternative choices. Only one of which is correct. You have to select the correct choices from the codes [a], [b], [c] and [d] given below:
    Statement I: Ethyl xanthate is used as a collector in froth floatation process.
    Statement II: Collectors depress the floatation property of one of the components of the ore and thus, help in the separation of different, minerals present in the same ore.

    A)  Statements is true; Statement II is true; Statements II is not the correct explanation for Statements I.

    B)  Statement I is true; Statement II is false.

    C)  Statement I is false; Statement II is true.

    D)  Statement I is true; Statement II is true; Statement II is the correct explanation for Statement I.

    Correct Answer: B

    Solution :

    Collectors adsorb themselves polar group grains of ores and thus, derive ore into the froth.


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