Name the large lake in Central Australia?

Name at least four countries and/ or independent states of Europe that are landlocked?

Are Andorra, Austria, Czech Republic, Hungary, Liechtenstein all correct options?

Lake Eyre?

For #1

I agree with your answers.

The large lake in Central Australia is called Lake Eyre. It is the largest lake in Australia and is located in the state of South Australia.

There are actually several landlocked countries and independent states in Europe. Some examples include:

1. Andorra
2. Austria
3. Czech Republic
4. Hungary
5. Liechtenstein

So yes, all the options you listed are correct.