Recently, scientists have found second Great Spot 24000 km across and 12000 km wide on which planet?
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The Great Smog of 1952 was a severe air-pollution event which affected _______.
Which of the following is indicated by the colour of a star ?
Which is the closest star to our solar system?
Ozone hole is caused by chemicals like _____.
Plants get their energy to produce food from which of the following?
The name of the space shuttle, which carried the Indian born Kalpana Chawla into space was
A ________________ is known by different names in different parts of the world. It is called a ‘hurricane’ in North America.