Question

one should believe in truth What is Proper noun in this sentence ​

Answer 1

There is no proper noun in the sentence, "One should believe in truth".

Explanation:

• A proper noun is those which are related to specific people.

• Whereas, "one" is used in the given sentence which is the common noun,  

• The common noun is the one that refers to the unspecific people.

• "Truth" is used in the given sentence and it is an abstract noun.