Question Detail The thickness of earth Crust is about ? 25 Km30 Km35 Km40 Km Answer: Option B Ad Similar Questions : 1. Sahara desert is in which Continent ? AsiaAfricaAustraliaEurope Answer: Option BExplanation:Deserts of Asia are : Arabian desert, Thar Desert, Gobi Desert. 2. Which among following is also known as "Island of pearls" ? AustraliaMadagascarBahrainSaudi Arabia Answer: Option CExplanation:Australia is also known as "Island Continent", Madagascar is also known as "Island of cloves". 3. The science of study of soils is called ? SeismologyPedologyEcologyZoogeography Answer: Option B 4. Atlas mountain is in which continent ? AfricaAsiaEuropeAustralia Answer: Option A 5. Big Bang was an explosion that occurred ? 10 Billion years ago15 Billion years ago20 Billion years ago25 Billion years ago Answer: Option B Read more from - Geography Questions Answers