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p-Block Element...

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  • Question 1
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    Which of the following property decreases down the group in the halogens?

  • Question 2
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    Which of the following represents the decreasing order of van der Waals’ forces in halogens ?

  • Question 3
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     The correct order of in creasing order of radiiions Br- , F-, O2- and S2-  is as follow

  • Question 4
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    The correct order for the percentage of ionic character is

  • Question 5
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    Which of the following statement is incorrect ?

  • Question 6
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    Which option is incorrect among the following for the given property?

  • Question 7
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    When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

  • Question 8
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    Which of the following does not exist?

  • Question 9
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    One gas bleaches the colour of flowers by reduction and another gas by oxidation. The gases respectively are

  • Question 10
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    Solid iodine is an example of

  • Question 11
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    The fluoride ores are

     

  • Question 12
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    Which of the following is/are correct among the following?

  • Question 13
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    The oxidation number of oxygen in O2PtF6 is

  • Question 14
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    The source of iodine is

     

  • Question 15
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    Which of the following reaction occurs?

  • Question 16
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    Direction (Q. Nos. 16 and 17) This section contains a paragraph, describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

    Passage

    Group 17 elements are known as halogens ( sea salt forming). Their general configuration is ns2np5 where, n = 2 to 7. Fluorine is the first member of the group differs in several ways from the rest of the group. Halogens are highly reactive elements having strong affinity for hydrogen. All the halogens form both ionic and covalent compounds .Fluorine is always monovalent and shows -1 oxidation state in its compounds .The other halogens exhibit 1, 3, 5, 7 valencies in their compounds and show - 1 to + 7 oxidation states.

    Q. Valence shell configuration that belongs to most reactive non-metal is

  • Question 17
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    Passage

    Group 17 elements are known as halogens ( sea salt forming). Their general configuration is ns2np5 where, n = 2 to 7. Fluorine is the first member of the group differs in several ways from the rest of the group. Halogens are highly reactive elements having strong affinity for hydrogen. All the halogens form both ionic and covalent compounds .Fluorine is always monovalent and shows -1 oxidation state in its compounds .The other halogens exhibit 1, 3, 5, 7 valencies in their compounds and show - 1 to + 7 oxidation states.

    Q. 

    In which of the following chlorine has different oxidation states?

  • Question 18
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    Direction (Q. No. 18 and 19) Choices for the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.

    Q. 

    Match the Column I with Column II and mark the correct option from the codes given below.

     

  • Question 19
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    Match the Column I with Column II and mark the correct option from the codes given below.

     

  • Question 20
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    Nitrogen is relatively inactive element because:

  • Question 21
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    In the MOT of F2 molecule, number of electrons occupying antibonding orbitals are

     

  • Question 22
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    The total number of positive oxidation states shown by fluorine is

     

  • Question 23
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    When carnallite is dissolved in water the number of ions formed are

     

  • Question 24
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    The number of water insoluble salts among

    AgF, AgCI, AgBr, Agl BeF2, CaF2,KF, PbCI2, HgCI2

     

  • Question 25
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    Statement I : All halogens are coloured.

    Statement II : Halogens absorbs part of the light in the visible region.

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