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JEE Main Test 107

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JEE Main Test 107
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Weekly Quiz Competition
  • Question 1
    4 / -1

    Solution

    The function is not coninuous .

     

  • Question 2
    4 / -1

    The correct order of ionic radius of Y3+ , La3+ , Eu3+ and Lu3+ is

    Solution

    63Eu and 71Lu are the members of lanthanide series. Due to the lanthanide contraction, the sizes of Eu, Lu and La follow the order Lu < Eu < La.

    The element 39Y belongs to the fifth period while Lu belongs to the sixth period, we expect their sizes to follow the order Y < Lu. Hence, the correct
    order is

    Y3+ < Lu3+ < Eu3+ < La3+

     

  • Question 3
    4 / -1

    In Ramsay and Rayleigh's isolation of noble gases from air, the nitrogen of the air is finally converted into

    Solution

     

  • Question 4
    4 / -1

    Which of the following pairs represents linkage isomers ?

    Solution

     

  • Question 5
    4 / -1

    Alkyl cyanides undergo Stephen reduction to produce

    Solution

    Reduction of alkyl cyanide with SnCl2|HCl to form an aldehyde is known as Stephen ‘s reduction.

     

  • Question 6
    4 / -1

    The perimeter of a sector is a constant. If its area is to be maximum, then the sectorial angle is

    Solution

     

  • Question 7
    4 / -1

    The best method to prepare cyclohexene from cyclohexanol is by using

    Solution

     

  • Question 8
    4 / -1

    Solution

     

     

  • Question 9
    4 / -1

    Solution

     

  • Question 10
    4 / -1

    If f(x) = tan x - tan3 x + tan5 x - ... ∞ with 0 < x < π/4, then

    Solution

     

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