Home
Class 12
CHEMISTRY
In the following question, a statement o...

In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice.
Assertion : In any ionic solid [MX] with schottky defects, the number of positive and negative ions are same.
Reason : Equal number of cation and aniojn vacancies are present .

A

Both assertion and reason are true and reason is the correct explanation of assertion .

B

Both assertion and reason are true but reason.

C

Assertion is true but reason is false.

D

Both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided: ### Step 1: Understand the Assertion The assertion states that in any ionic solid [MX] with Schottky defects, the number of positive and negative ions is the same. **Explanation**: - Schottky defects occur when equal numbers of cations (positive ions) and anions (negative ions) are missing from the crystal lattice. - This type of defect maintains the stoichiometry of the ionic compound, meaning that the ratio of cations to anions remains unchanged. ### Step 2: Understand the Reason The reason states that an equal number of cation and anion vacancies are present. **Explanation**: - In Schottky defects, the vacancies created by the missing cations and anions are equal in number. - This is necessary to maintain electrical neutrality in the crystal. If there were more vacancies of one type than the other, the charge balance would be disrupted. ### Step 3: Conclusion Both the assertion and the reason are true. The reason correctly explains the assertion, as the equal number of vacancies ensures that the number of positive and negative ions remains the same. ### Final Answer Both assertion and reason are true, and the reason is the correct explanation of the assertion. Therefore, the correct choice is option 1. ---
Promotional Banner

Topper's Solved these Questions

  • PRACTICE PAPER -2

    NCERT FINGERTIPS ENGLISH|Exercise Practice Paper 2|50 Videos

  • PRACTICE PAPER -1

    NCERT FINGERTIPS ENGLISH|Exercise Practice Paper 1|50 Videos

  • PRACTICE PAPER -3

    NCERT FINGERTIPS ENGLISH|Exercise Practice Paper 3|50 Videos

Similar Questions

Explore conceptually related problems

Statement I: In any ionic solid [MX] with Schottky defect, the number of positive and negative ions are same. Statement II: An equal number of cation and anion vacancies is present.

Statement I: In any ionic solid [MX] with Schottky defect, the number of positive and negative ions are same. Statement II: An equal number of cation and anion vacancies is present.

In the following question, a statement of assertion is followed by a statement of reason, mark the correct choice. Assertion: When Q_(c)=K_(c) , reaction is at equilibrium. Reason: At equilibrium, DeltaG^(@) is 0.

In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : O_(2) is paramagnetic . R : N_(2) is paramagnetic .

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). A: Bond order of CO_3^-2 is 1.33 R: Carbonate ion is isoelectronic with nitrate ion.

In the following question, a statement of assertionn is followed by a statement of reason. Mark the correct choice. Assertion: Greater the value of van der waals constant 'a' easier is the liquifaction of a gas. Reason: 'a' indirectly measures the magnitude of attractive forces between the molecules.

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). Br A: NaCl has greater tendency to show Schottky defect than ZnS. R: Both NaCl and ZnS have 4 formula units per unit cell

In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : LiCl is more covalent than BeCl_(2) R : Li^(*) ion is smaller than Be^(2+) .

In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : PCl_(5) exist but NCl_(5) does not R : Nitrogen is highly inert.

NCERT FINGERTIPS ENGLISH-PRACTICE PAPER -2-Practice Paper 2
  1. Name of the drug whose structure given below is

    Text Solution

    |

  2. In the Cannizzaro reaction given below: 2Ph-CHO overset(overset(Θ)OH...

    Text Solution

    |

  3. In the following question, a statement of assertion is followed by a s...

    Text Solution

    |

  4. A synthetic polyamide prepared by prolonged heating of caporlactam is

    Text Solution

    |

  5. In the long form of the periodic table, the transition metals are plac...

    Text Solution

    |

  6. Which of the following is a colligative property ?

    Text Solution

    |

  7. Which of the following is a false statement ?

    Text Solution

    |

  8. In the above reaction sequence, A , B and C respectively are

    Text Solution

    |

  9. Four successive members of the first row transition elements are liste...

    Text Solution

    |

  10. Alcohols of low molecular weight are

    Text Solution

    |

  11. Which of the following statement are correct ? (i) Smaller the gold...

    Text Solution

    |

  12. The method of zone refining of metals is based on the principle of

    Text Solution

    |

  13. Strength of acideity is in order

    Text Solution

    |

  14. Which of the following is paramagnetic as well as coloured ion ?

    Text Solution

    |

  15. Antiseptic Chloroxylenol is

    Text Solution

    |

  16. PVC is an example of

    Text Solution

    |

  17. Order of esterification of alcohols is

    Text Solution

    |

  18. Which of the following alkenes is the most reactive towards cationic p...

    Text Solution

    |

  19. The reaction Aroverset(+)N(2)Cl^(-) overset(Cu//HCl)to ArCl +N(2) + ...

    Text Solution

    |

  20. Latex is acolloidal solution of rubber particles which are

    Text Solution

    |