Proper Noun

A Proper Noun must begin with a capital letter.
B)Pick out the common and proper nouns in the following sentences  

1. Laika is the name of my neighbour's dog.

2. Gandhiji is known as the 'father of the Nation'.

3. Mala's sister is mini.

4. Hyderabad and Secunderabad are twin cities.

5. There are two doctors in the village.

6. The Elephant is a huge animal.

7. Shanu is the name of a Whale.

8. The Nile is a long river.

9. The boy is riding his tricycle.

10. There are many trees in Kerala.