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MCQ (Previous Year Questions) - P Block (Level 2) - JEE MCQ


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25 Questions MCQ Test - MCQ (Previous Year Questions) - P Block (Level 2)

MCQ (Previous Year Questions) - P Block (Level 2) for JEE 2024 is part of JEE preparation. The MCQ (Previous Year Questions) - P Block (Level 2) questions and answers have been prepared according to the JEE exam syllabus.The MCQ (Previous Year Questions) - P Block (Level 2) MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for MCQ (Previous Year Questions) - P Block (Level 2) below.
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MCQ (Previous Year Questions) - P Block (Level 2) - Question 1
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When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

MCQ (Previous Year Questions) - P Block (Level 2) - Question 2
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Nitrogen is liberated by the thermal decomposition of -       [IIT-1991]

Detailed Solution for MCQ (Previous Year Questions) - P Block (Level 2) - Question 2
Nitrogen is liberated by the thermal decomposition of ammonium nitrite (NH4NO2),NaN3,(NH4)2 Cr2O7
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MCQ (Previous Year Questions) - P Block (Level 2) - Question 3
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There is no S – S bond in -                [IIT-1991]

MCQ (Previous Year Questions) - P Block (Level 2) - Question 4
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The type of hybrid orbitals used by chlorine atom in  ion.          [IIT-1992]
Detailed Solution for MCQ (Previous Year Questions) - P Block (Level 2) - Question 4
We can calculate the number of orbitals involved in hybridisation by using the reaction.
Number of orbital involved in hybridisation by using the relation:
Number of orbital involved in hybridisation =1/2 (V + M − C + A)
Where V =  number of valence electrons
M =  number of monovalent atoms surrounding the atom
C = Charge on cation.
A = Charge on anion.
Number of orbitals involved in hybridisation = 1/2 (7 + 0 + 0 + 1) = 4
Since 4 orbitals are involved in hybridisation so it is SP^3 hybridised.
Hence A is the correct answer.
MCQ (Previous Year Questions) - P Block (Level 2) - Question 5
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STATEMENT-I

Although PF5, PCl5 and PBr5 are known, the pentahalides of nitrogen have not been observed

STATEMENT-II

Phosphorus has lower electronegativity than nitrogen.            [IIT-1994]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 6
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In P4O10 each P atom is linked with............O atoms -
MCQ (Previous Year Questions) - P Block (Level 2) - Question 7
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Which one of the following species is not a pseudohalide ?
MCQ (Previous Year Questions) - P Block (Level 2) - Question 8
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Which of the following statements is correct for CsBr3 ?         [IIT-1996]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 9
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Hydrolysis of one mole of peroxodisulphuric acid produces– [IIT-1996]
Detailed Solution for MCQ (Previous Year Questions) - P Block (Level 2) - Question 9
H2S2S8 + H2O → H2SO4 + H2SO5 ( peroxomonosulphuric acid) 
MCQ (Previous Year Questions) - P Block (Level 2) - Question 10
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KF combines with HF to form KHF2. The compound contains the species :       [IIT-1996]
Detailed Solution for MCQ (Previous Year Questions) - P Block (Level 2) - Question 10
KHF2 → K^+  + HF2^−
Hence, KHF2 contains K^+ and HF​2^-. HF2^- ion is formed by hydrogen bonding between F^- ion and HF molecule.
So, the correct answer is (c)
MCQ (Previous Year Questions) - P Block (Level 2) - Question 11
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White phosphorus (P4) has -      [IIT-1998]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 12
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In Compound of type ECl3, where E = B, P As or Bi, the angles Cl – E – Cl for different E are in the order              [IIT-1999]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 13
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 On heating ammonium dichromate, the gas evolved is           [IIT-1999]
Detailed Solution for MCQ (Previous Year Questions) - P Block (Level 2) - Question 13
When you heat Ammonium Chromate, a green insoluble residue is seen which is Cr2O3. The further products which are seen are Steam and Nitrogen gas
MCQ (Previous Year Questions) - P Block (Level 2) - Question 14
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One mole of calcium phosphide on reaction with excess of water gives-     [IIT-1999]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 15
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The oxidation numbers of sulphur in S8, S2F2, H2S, respectively, are →       [IIT-1999]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 16
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Ammonia can be dried by -        [IIT-2000]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 17
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The number of P – O – P bonds in cyclic metaphosphoric acid is - [IIT-2000]
Detailed Solution for MCQ (Previous Year Questions) - P Block (Level 2) - Question 17

According to the above structure, there are three P-O-P bonds.

Hence A is the correct answer.

MCQ (Previous Year Questions) - P Block (Level 2) - Question 18
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Amongst H2O, H2S, H2Se and H2Te, the one with the highest boiling point is     [IIT-2000]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 19
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The number of S – S bonds in sulphur trioxide trimer (S3O9) is –       [IIT- 2001]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 20
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Read the following statement and explanation and answer as per the option given below :      [IIT-2001]

Statement-I : F atom has a less negative electron gain enthalpy affinity than Cl atom.

Statement-II : Additional electrons are repelled more effectively by 3 p electrons in Cl atom than by 2p electron in F atom
MCQ (Previous Year Questions) - P Block (Level 2) - Question 21
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The set with correct order of acidity is       [IIT- 2001]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 22
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The reaction 3 CIO_(aq ) → (aq) + 2 Cl_ (aq) is an example of      [IIT-2001]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 23
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 H3PO4 and H3PO3 is -     [IIT-2003]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 24
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The acid having O–O bond is-      [IIT-2004]
MCQ (Previous Year Questions) - P Block (Level 2) - Question 25
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Which phosphorus is thermodynamically most stable ?        [IIT-2005]
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