Out of the four alternatives, choose the one which can be substituted for the given words/sentences and click the button corresponding to it.
A place where astronomical observations are made
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'M' in BIMARU stands for which state?
The SI unit of acceleration is __________.
The longest railway line in the world connects _________
Which leader of British Labour Party was recently elected the first Muslim Mayor of London?
Which country is constructing a DNA sequencing platform to store ethnic data of about 80 million people?
Which one of the following was established with a definite provision under an Article of the Constitution of India?
Who created the first mechanical computer, which proved to be the prototype for future computers?