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Chemistry Test 74
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Chemistry Test 74
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  • Question 1/10
    4 / -1

    The set of ions which has same magnetic moment is  :-

    Solutions

    Mn+2, Fe+3, Cr+ (They all have 5 unpaired e–)

     

  • Question 2/10
    4 / -1

    The correct order of increasing radius is :-

    Solutions

    Correct order of radius

    Be+2 < Mg+2 < Na+

    Ca+2 < K+ < S–2

    F– < O–2 < N–3

    O–2 < S–2 < As–3

     

  • Question 3/10
    4 / -1

    Which of the following is not a set of isoelectronic species ?

    Solutions

    Cl–(18e–)

    Ne and O–2 (10e–)

    They are not isoelectronic

     

  • Question 4/10
    4 / -1

    For which species, energy required to separate an electron will be maximum ?

    Solutions

    IE ∝ Zeff
    order of IE :- Na+ < Mg+2 < Al+2 < Al+3

     

  • Question 5/10
    4 / -1

    The IP1, IP2, IP3, IP4 and IP5 of an element are 7.1, 14.3, 34.5, 46.8 and 162.2 eV respectively. The element is likely to be :-

    Solutions

    The biggest jump occurs from IP4 and IP5 hence, velence e– = 4 (It belongs to 'c' family)

     

  • Question 6/10
    4 / -1

    In which of the following process energy is liberated ?

    Solutions

    Cl + e– → Cl– (This is EA process of Cl)

    This process is exothermic

     

  • Question 7/10
    4 / -1

    For electron affinity of halogens, which of the following is correct ?

    Solutions

    Order of EA :- Cl > F > Br > I

     

  • Question 8/10
    4 / -1

    An element belongs to group III(A) and 3rd period of the periodic table. Which of the following properties will be shown by the element ?

    Solutions

    That element is Al.

    Al2O3 is an amphoteric oxide.

    Al is solid but metallic.

     

  • Question 9/10
    4 / -1

    Among the following oxides, which is least acidic?

  • Question 10/10
    4 / -1

    Correct order of acidic strength is :-

    Solutions

    Order in periodic table,

    C

    Si         P          Cl

    (In covalent hydrides, acidic strength increases from left to right along a period as well as down the group)

    order of acidic strength

    CH4 < SiH4 < PH3 < HCl

     

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