In which of the following countries Sahara desert is not located?

1. Nigeria

2. Niger

3. Burkinso faso

4. Chad

5. Tunisia

a. 1,3,5

b. 2 and 3

c. 1 and 3

d. None of the above

ANSWER: 1 and 3

Explanation:

The Sahara covers large parts of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara, Sudan and Tunisia. Around 6,000 years ago, Palaeolake Mega-Chad was the largest freshwater lake on Earth in Sahara desert.