Who among the following first measured the distance around the Earth?

The world's largest geothermal energy plant is located in which country?

Death Valley (Death Valley) is located in which of the following deserts?

Niamey is the capital of which of the following African countries?

Peltdown mind related to ancient man was found in which of the following country?

Which are the largest mountain ranges in the world?

Which is the most productive country of silk?

Which country has created fake Mars on its land?