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Question

Which of the following statements is contradictory to the statement-" all dogs are friendly animals" ?

This question was previously asked in
UGC NET 2022 Paper 1 Question Paper (22-Oct-2022) (Shift 2)
The correct answer is

Some dogs are not friendly animals.

To determine which statement is contradictory to the statement "All dogs are friendly animals," we need to analyze what the given statement logically reflects and what each option implies.

The statement "All dogs are friendly animals" can be represented in logical terms as:

  • Every dog is classified within the category of friendly animals.

Now, let's analyze each of the given options:

  1. No dogs are friendly animals. - This statement implies that there is no overlap between dogs and friendly animals, which directly contradicts the given statement.
  2. Some friendly animals are not dogs. - This statement is not contradictory because the original statement only deals with dogs, and doesn't claim anything about friendly animals that are not dogs.
  3. Some friendly animals are dogs. - This statement is actually consistent with the original statement, as if all dogs are friendly, then certainly some friendly animals can also be dogs.
  4. Some dogs are not friendly animals. - This statement is directly contradictory to the given statement because if there are some dogs that are not friendly, it violates the notion that "all" dogs are friendly.

Conclusion: Based on the logical analysis, the statement "Some dogs are not friendly animals" is the one that contradicts the original statement "All dogs are friendly animals." Therefore, the correct answer is:

Correct Answer: Some dogs are not friendly animals.

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Similar Questions

  1. Which of the following is contrary to the statement "No mammals are birds"?

  2. If the statement "Some animals are birds" is given as false then which of the following statements can be immediately inferred to be false?

  3. Which of the following propositions can be directly inferred from the statement - "All mammals are four-legged animals?

  4. Which of the following statements are contradictory to each other?

     A. All objects are perishable.

     B. Some objects are not perishable. 

    C. Some objects are perishable. 

    D. No objects are perishable. 

    Choose the most appropriate answer from the options given below:

  5. If the statement 'No men are honest' is given as false, then which of the following could be immediately inferred from it?

    A. 'All men are honest' is true

    B. 'All men are honest' is undetermined

    C. 'Some men are not honest' is true

    D. 'Some men are honest' is true

    Choose the correct answer from the options given below:

  6. Given below are two statements
    Statement I: Contrary statements are so related that if one of them is true, the other must be false.
    Statement II: Contrary statements cannot both be false.
    In light of the above statements, choose the correct answer from the options given below :

  7. If the proposition ‘domestic animals are hardly ferocious’ is taken to be false, which of the following proposition/propositions can be claimed to be certainly true? Select the correct code:

    Propositions:

    (a) All domestic animals are ferocious.

    (b) Most of the domestic animals are ferocious.

    (c) No domestic animal is ferocious.

    (d) Some domestic animals are non-ferocious.

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  8. Given below are four statements. Among them two are related in such a way that they can both be true but they cannot both be false. Select the code that indicates those two statements:

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  10. If proposition 'some milk is curd' is taken to be true, then which of the following propositions can be false?


Important Questions from Classical Square of Opposition

  1. Which of the following statements are so related that they can not both be true but could both be false?

    A. All Biologists are outstanding teachers.

    B. Some Biologists are outstanding teachers.

    C. No Biologists are outstanding teachers.

    D. Some Biologists are not outstanding teachers.

    Choose the correct answer from the options given below:

  2. Which of the following propositions are so related that they can neither be true together nor can they be false together?
    A. All printers are computer peripherals.
    B. Some computer peripherals are printers.
    C. Some printers are not computer peripherals.
    D. No printers are computer peripherals.
    Choose the correct answer from the options given below:
  3. Which of the following statements contradict each other ?
    A. All ducks are birds.
    B. Some ducks are birds.
    C. Some ducks are not birds.
    D. No ducks are birds.
    Choose the most appropriate answer from the options given below :
  4. If the statement "No birds are animals" is given as false, which of the following statements can be inferred to be true ?
    A. Some animals are not birds.
    B. Some birds are not animals.
    C. Some animals are birds.
    D. Some birds are animals.
    Choose the most appropriate answer from the options given below :
  5. Which of the following statements are sub-contraries?
    A. All sparrows are birds.
    B. No sparrows are birds.
    C. Some sparrows are birds.
    D. Some sparrows are not birds.
    Choose the correct answer from the options given below:
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