Facebook X (Twitter) Instagram
    ScienceMotive
    • Class 9
      • Matter in Our Surroundings
      • Is Matter Around Us Pure
      • Atoms and Molecules
      • Structure of the Atom
      • The Fundamental Unit of Life
    • Class 10
      • Chapter 1: Chemical Reactions and Equations
      • Chapter 2: Acids, Bases & Salts
      • Chapter 3: Metals & Non-Metals
      • Chapter 4: Carbon and its Compounds
      • Chapter 5: Periodic Classification of Elements
      • Chapter 6: Life Processes
      • Chapter 7: Control and Coordination
      • Chapter 8: How Do Organisms Reproduce?
      • Chapter 9: Heredity and Evolution
      • Chapter 10: Light – Reflection and Refraction
      • Chapter 11: Human Eye and the Colourful World
      • Chapter 12: Electricity
      • Chapter 13: Magnetic Effects of Electric Current
      • Chapter 14: Sources of Energy
      • Chapter 15: Our Environment
      • Chapter 16: Management of Natural Resources
    • Class 11
      • Chemisrty 11
        • Chapter – 1 Some Basic Concepts of Chemistry
        • Chapter – 2 Structure Of Atom
        • Chapter – 3 Classification of Elements and Periodicity in Properties
        • Chapter – 4 Chemical Bonding and Molecular Structure
        • Chapter – 5 States of Matter
        • Chapter – 6 Thermodynamics
        • Chapter – 7 Equilibrium
        • Chapter – 8 Redox Reaction
        • Chapter – 10 s-Block Elements
        • Chapter – 13 Hydrocarbons
    • Class 12
      • Chemistry 12
        • The Solid State
        • Solutions
        • Electrochemistry
        • Chemical Kinetics
        • Surface Chemistry
        • p – Block Elements
        • d & f Block Elements
        • Coordination Compounds
        • Haloalkanes and Haloarenes
        • Alcohols, Phenols and Ethers
        • Aldehydes, Ketones and Carboxylic Acids
        • Amines
        • Biomolecules
        • Polymers
        • Chemistry in Everyday Life
    • Practice Questions
      • +1
      • +2
    • Test Series
      • Class 9 Test Series
      • Class 10 Test Series
      • Class 11 Test Series
      • Class 12 Test Series
    • World
      • Current Affairs
      • General Knowledge
    ScienceMotive
    Home » p-Block Elements Assertion Reason Questions

    p-Block Elements Assertion Reason Questions

    Dr. Vikas JasrotiaBy Dr. Vikas JasrotiaNovember 7, 2021No Comments
    Share
    Facebook WhatsApp Telegram Twitter Email

    p-Block Elements Assertion Reason Questions

    p-Block Elements Assertion Reason Questions

    Q 1. Assertion: Hydrolysis of XeF6 is an example of a redox reaction.
    Reason: XeF6 when hydrolysed yields XeOF4 and XeO2F2
    Ans 1. (d) Assertion is wrong but the reason is the correct statement

    Q 2. Assertion: The O-O bond length in ozone is identical to that in molecular oxygen.
    Reason: The ozone molecule is a resonance hybrid of two canonical structures.
    Ans 2. (a) Both A and R are true but R is the correct explanation of A

    Q 3. Assertion: HI cannot be prepared by the action of conc. H2SO4 on KI.
    Reason: HI is more volatile than H2SO4
    Ans 3. (b) Both A and R are true but R is not a correct explanation of A

    Q 4. Assertion: Boric acid behaves as a weak monobasic acid.
    Reason: Boric acid contains hydrogen bonds in its structure.
    Ans 4. (b) Both A and R are true but R is not a correct explanation of A

    Q 5. Assertion: HCIO is a stronger acid than HBrO.
    Reason: Greater is the electronegativity of the halogen, greater will attraction of electron pair towards it and hence more easily the H+ ion will be released.
    Ans 5. (a) Both A and R are true but R is the correct explanation of A

    Q 6. Assertion: SO3 has a planer structure
    Reason: S atom in SO3 is sp2 hybridized and O-S-O bond angle is 1200.
    Ans 6. (a) Both A and R are true but R is the correct explanation of A

    Q 7. Assertion: Salts of ClO3– and ClO4– are well known but those of FO3– and FO4– are non-existent.
    Reason: F is more electronegative than O while Cl is less electronegative than O.
    Ans 7. (b) Both A and R are true but R is not a correct explanation of A

    Q 8. Assertion: Both rhombic and monoclinic sulphur exist as S8 but oxygen exists as O2.
    Reason: Oxygen forms pπ – pπ multiple bonds due to small size and small bond lengths but pπ – pπ bonding is not possible in sulphur.
    Ans 8. (a) Both A and R are true but R is the correct explanation of A

    Q 9. Assertion: NaCl reacts with concentrated H2SO4 to give colourless fumes with a pungent smell. But on adding MnO2 the fumes become greenish-yellow.
    Reason: MnO2 oxidises HCl to chlorine gas which is greenish-yellow.
    Ans 9. (a) Both A and R are true but R is the correct explanation of A

    Q 10. Assertion: SF6 cannot be hydrolysed but SF4 can be
    Reason: Six F atoms in SF6 prevent the attack of H2O on the sulphur atom of SF6.
    Ans 10. (a) Both A and R are true but R is the correct explanation of A.

    p-Block Elements Assertion Reason Questions
     

    Advertisement
    p-Block Elements Assertion Reason Questions
    Share. Facebook Twitter Pinterest LinkedIn Tumblr Email
    Dr. Vikas Jasrotia
    • Website

    Related Posts

    When Conc. H2SO4 was added to an unknown salt in a test tube, and a brown gas (A) was evolved. This gas intensified when copper turnings were added to the test tube. On cooling gas (A) changed into a colorless gas (B). Identify the gases ‘A’ and ‘B’. Write the equations for the reactions involved.

    October 19, 2022

    CBSE Sample Paper Session 2022-23 (Chemistry) PDF

    September 16, 2022

    Haloalkanes and Haloarenes Class 12 – Questions & Answers

    August 2, 2022

    Leave A Reply Cancel Reply

    READ ALSO

    Question 2.11: A 25-watt bulb emits monochromatic yellow light of wavelength of 0.57µm. Calculate the rate of emission of quanta per second.

    September 27, 2023

    Question 2.10: Electromagnetic radiation of wavelength 242 nm is just sufficient to ionize the sodium atom. Calculate the ionization energy of sodium in kJ mol–1.

    September 26, 2023

    Question 2.9: A photon of wavelength 4 × 10–7 m strikes on the metal surface, the work function of the metal is 2.13 eV. Calculate (i) the energy of the photon (eV), (ii) the kinetic energy of the emission, and (iii) the velocity of the photoelectron (1 eV= 1.6020 × 10–19 J).

    September 25, 2023

    Question 2.8: What is the number of photons of light with a wavelength of 4000 pm that provide 1 J of energy?

    September 21, 2023
    +1

    Question 2.11: A 25-watt bulb emits monochromatic yellow light of wavelength of 0.57µm. Calculate the rate of emission of quanta per second.

    By Dr. Vikas JasrotiaSeptember 27, 2023

    Question 2.11: A 25-watt bulb emits monochromatic yellow light of wavelength of 0.57µm. Calculate the…

    +1

    Question 2.10: Electromagnetic radiation of wavelength 242 nm is just sufficient to ionize the sodium atom. Calculate the ionization energy of sodium in kJ mol–1.

    By Dr. Vikas JasrotiaSeptember 26, 2023

    Question 2.10: Electromagnetic radiation of wavelength 242 nm is just sufficient to ionize the sodium…

    +1

    Question 2.9: A photon of wavelength 4 × 10–7 m strikes on the metal surface, the work function of the metal is 2.13 eV. Calculate (i) the energy of the photon (eV), (ii) the kinetic energy of the emission, and (iii) the velocity of the photoelectron (1 eV= 1.6020 × 10–19 J).

    By Dr. Vikas JasrotiaSeptember 25, 2023

    Question 2.9: A photon of wavelength 4 × 10–7 m strikes on the metal surface,…

    Advertisement
    Advertisement
    Facebook X (Twitter) Instagram Pinterest YouTube
    • Disclaimer
    • Contact Us
    • Privacy Policy 
    • Terms and Conditions
    © 2023 All Rights Reserved ScienceMotive.

    Type above and press Enter to search. Press Esc to cancel.