1.

    Which of the following elements of Group 15 does NOT exhibit allotropy?

    A

    Phosphorus

    B

    Arsenic

    C

    Antimony

    D

    Bismuth

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Hard
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :p-block elements, allotropy, group 15 trends

    Related Questions

    1.

    Which of the following gases is evolved when copper is treated with concentrated nitric acid?

    A

    Hydrogen

    B

    Nitrogen dioxide

    C

    Nitric oxide

    D

    Oxygen

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    PYQ YEAR: 2016
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Reactions of Metals with Acids, Redox Reactions, Gaseous Products

    2.

    Which compound is responsible for the blood-red color observed when Fe3+Fe^{3+} is added to the Lassaigne's extract of an organic compound containing both nitrogen and sulfur?

    A

    Ferric ferrocyanide

    B

    Ferric sulfide

    C

    Ferric thiocyanate

    D

    Sodium thiocyanate

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    PYQ YEAR: 2023
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Lassaigne's Test, Qualitative Analysis, Nitrogen Detection, Sulfur Detection

    3.

    What is the oxidation state of nitrogen in the brown gas produced when copper reacts with concentrated nitric acid?

    A

    +5

    B

    +3

    C

    +4

    D

    +2

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    PYQ YEAR: 2016
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Oxidation States, Redox Reactions, Reactions of Metals with Acids

    4.

    Nitrogen forms N2,{N_2}, but phosphorous does not form P2,{P_2}, however it converts P4,{P_4}, reason is

    A

    Triple bond present between phosphorus atoms.

    B

    PΟ€βˆ’PΟ€P\pi {\rm{ - }}P\pi Bonding is weak.

    C

    PΟ€βˆ’PΟ€P\pi {\rm{ - }}P\pi Bonding is strong.

    D

    Multiple bonds from easily.

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :chemical bonding, pi bonds, atomic size, multiple bonding

    5.

    Which is wrong about P4O10{P_4}{O_{10}} molecule

    A

    It has a cage-like structure

    B

    It has P-P bonds

    C

    Each P atom forms a double bond with an oxygen atom

    D

    It has high melting and boiling points

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Easy
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :molecular structure, hybridization, bonding, bond angles

    6.

    The general electronic configuration of Group 15 elements is:

    A

    ns2np4ns^2np^4

    B

    ns2np3ns^2np^3

    C

    ns2np2ns^2np^2

    D

    ns2np1ns^2np^1

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :0.5 mins
    πŸ”„Ncert Concepts :Group 15, Electronic Configuration

    7.

    Which is the correct statement for the given acids?

    A

    Phosphinic acid is a diprotic acid while phosphonic acid is a monoprotic acid.

    B

    Phosphinic acid is a monoprotic acid while phosphonic acid is a diprotic acid.

    C

    Both are triprotic acids

    D

    Both are diprotic acids

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :acidic properties, proticity, chemical structure

    8.

    Among the nitrogen oxides Β N2O\ N_2O, Β NO\ NO, Β N2O3\ N_2O_3, and Β N2O5\ N_2O_5, which has the highest oxidation state for nitrogen, and which has the lowest?

    A

    N2O5 (highest), N2O (lowest)

    B

    NO (highest), N2O5 (lowest)

    C

    N2O3 (highest), N2O (lowest)

    D

    N2O5 (highest), N2O3 (lowest)

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    PYQ YEAR: 2018
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Oxidation State, Nitrogen Oxides

    9.

    Among Cl, K, Ca, and Se, which element forms the largest ion when achieving its nearest noble gas configuration?

    A

    Cl

    B

    K

    C

    Ca

    D

    Se

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    PYQ YEAR: 2023
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Periodic Trends, Ionic Radius, Noble Gas Configuration

    10.

    Which of the following is a nitric acid anhydride

    A

    NONO

    B

    NO2N{O_2}

    C

    N2O5{N_2}{O_5}

    D

    N2O3{N_2}{O_3}

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Classification Of Elements
    🎯Topic:Nitrogen Family [Group-15]
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :acid anhydrides, chemical formulas, nitric acid

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