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Question

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:

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

C and D only

To determine which statements are contradictory to each other, let's analyze each given statement individually and in relation to each other:

  • Statement A: All objects are perishable.
    • This implies that every object, without exception, is perishable.
  • Statement B: Some objects are not perishable.
    • This means there is at least one object that is not perishable.
  • Statement C: Some objects are perishable.
    • This indicates that there is at least one object that is perishable, but not necessarily all objects.
  • Statement D: No objects are perishable.
    • This suggests that none of the objects are perishable.

Now, let's compare the statements to identify contradictions:

  1. Statement A contradicts Statement B. If all objects are perishable, then it cannot be true that some objects are not perishable.
  2. Statement A contradicts Statement D. If all objects are perishable, then it cannot be true that no objects are perishable.
  3. Statement C contradicts Statement D. If some objects are perishable, then it cannot be true that no objects are perishable.

Given the options:

  • A and D only: True, they are contradictory.
  • B and D only: Not contradictory. They both can coexist if some objects are perishable, but none are.
  • C and D only: True, they are contradictory, as explained.
  • A and C only: Not contradictory, as it is possible for all objects to be perishable, which means some are perishable by necessity.

Therefore, the statements that are most appropriately identified as contradictory are "C and D only." This is because Statement C asserts that some objects are perishable, directly opposing Statement D, which claims none are perishable.

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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?

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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?

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