Instructions

A passage is given with 5 questions following it. Read the passage carefully and choose the best answer to each question out of the four alternatives.
Passage:

Volcanic eruptions create beautiful surreal panorama like the unique landscape in Turkey. Here, rock structures of different shapes and sizes are a result of volcanic outbursts. Called “Fairy Chimneys” of Goreme in the Cappadocia region, Turkey, these rock sites are a major tourist attraction. Cappadocia lies in Central Anatolia in Turkey with the Taurus Mountains in the south separating it from the Mediterranean Sea. The rock formations that we see today can be traced back to millions of years. Several volcanic eruptions through deep fractures threw up rocks, lava, ash and other materials. After the eruption, a dense ash covered the entire area. Soon the ejected ash solidified into a soft/porous rock called “tuff”.

The soft rocks were exposed to sub aerial erosion by wind, water and climatic changes (temperature changes). The rocks expanded in summer as they heated up, and broke up in winter as they froze. Added to this, the icy water collected in the cracks led to disintegration. Cappadocia gets heavy rain, and this too has played its part in altering the landscape. Rainwater has created sweeping curves on the sides of the valleys. The rivers washed away the eroded pieces of rocks and the harder rocks stayed on. Today, you see them in different shapes — capped chimneys, pillars, mushrooms and conical formations. As erosion constantly changes the landscape of the rock structures in Cappadocia, it can pose a danger to the habitation.

Question 195

How old are these rock formations?


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