Capitalizing Proper Nouns

Is the word 'city' a common noun or a proper noun?

Identify the proper noun in the following sentence: The dog ran to the park.

Which of the following is a proper noun: book, New York, table?

In the sentence 'I visited the museum', is 'museum' a common noun or a proper noun?

Choose the proper noun in the sentence: The cat sat on the chair.

Is the word 'teacher' a common noun or a proper noun?

Which of the following is a proper noun: car, London, tree?

Identify the proper noun in the sentence: The boy went to the store.

In the sentence 'She loves to read books', is 'books' a common noun or a proper noun?

Choose the proper noun in the following sentence: The bird flew over the river.