1.

    Equal masses of oxygen and ozone are present in a container at 298 K. The ratio of their partial pressures (PO2:PO3P_{O_2} : P_{O_3}) is:

    A

    1:1

    B

    2:3

    C

    3:2

    D

    4:3

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Mole Concept, Partial Pressures, Dalton's Law

    Related Questions

    1.

    Which of the following contains the greatest number of atoms?

    A

    1 g of Li

    B

    1 g of Ag

    C

    1 g of Mg

    D

    1 g of O2

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    PYQ YEAR: 2020
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Mole Concept, Atomic Mass

    2.

    The apparatus in which standard solution is prepared is known as :

    A

    Measuring flask

    B

    Round bottom flask

    C

    Burette

    D

    None of these

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :laboratory equipment, solution preparation

    3.

    If 100 mL of a 17.0% \AgNO3\AgNO_3 solution is reacted with excess NaCl, what mass of AgCl will precipitate?

    A

    14.35 g

    B

    7.175 g

    C

    28.7 g

    D

    3.587 g

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    PYQ YEAR: 2015
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :Stoichiometry, Limiting Reagent, Precipitation Reactions

    4.

    If you have 2 g of each of the following substances, which one would contain the highest number of atoms?

    A

    Helium

    B

    Neon

    C

    Argon

    D

    Krypton

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    PYQ YEAR: 2020
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Mole Concept, Atomic Mass

    5.

    Which of the following has the largest number of atoms?

    A

    0.5 g of Li

    B

    0.5 g of Na

    C

    0.5 g of K

    D

    0.5 g of Rb

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    PYQ YEAR: 2020
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Mole Concept, Atomic Mass

    6.

    The molar mass of oxygen atoms is 16 g/mol. What is the mass of 0.25 moles of oxygen atoms?

    A

    2g

    B

    4g

    C

    8g

    D

    16g

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Mole Concept, Molar Mass

    7.

    1 mol of CH4C{H_4} contains

    A

    6.02imes10236.02 imes {10^{23}} atoms of H

    B

    4 g.atom of Hydrogen

    C

    1.81imes10231.81 imes {10^{23}} molecules of CH4C{H_4}

    D

    3.0 g of carbon

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :mole concept, Avogadro's number, atomic mass

    8.

    Volume occupied by 3.01imes1023    3.01 imes {10^{23}}\;\; molecules of acetylene at NTP is:

    A

    22.4  litre22.4\,\,{\rm{litre}}

    B

    11.2  litre11.2\,\,{\rm{litre}}

    C

    1.12  litre1.12\,\,{\rm{litre}}

    D

    2..24  litre2..24\,\,{\rm{litre}}

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Mole concept, Avogadro's number, Molar volume at NTP

    9.

    Which one of the followings has maximum number of atoms ?

    A

    1  g{\rm{1}}\,\,{\rm{g}}of Ag (s){\rm{Ag}}\,\left( {\rm{s}} \right) [ Atomic mass of Ag=108Ag = {\rm{ }}108 ]

    B

    1  g{\rm{1}}\,\,{\rm{g}} of Mg (s){\rm{Mg}}\,\left( {\rm{s}} \right) [ Atomic mass of Mg=24Mg = {\rm{ }}24 ]

    C

    1  g{\rm{1}}\,\,{\rm{g}} of O2(g){{\rm{O}}_{\rm{2}}}\left( {\rm{g}} \right) [ Atomic mass of O=16O = {\rm{ 16}} ]

    D

    1  g{\rm{1}}\,\,{\rm{g}} of Li (s){\rm{Li}}\,\left( {\rm{s}} \right) [ Atomic mass of Li=7Li = {\rm{ 7}} ]

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :Moles, Atomic Mass, Number of Atoms

    10.

    What is the mass of the precipitate formed when 50 mL of 16.9% solution of \AgNO3\AgNO_3 is mixed with 50 mL of 5.8% NaCl solution?

    A

    7.175 g

    B

    14.35 g

    C

    3.587 g

    D

    10.76 g

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:Some Basic Concepts in Chemistry
    🎯Topic:Mole Concept
    PYQ YEAR: 2015
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :Stoichiometry, Limiting Reagent, Precipitation Reactions

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