What is light year?
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Soda water contains 1 Nitrous acid 2 Carbonic acid 3 Carbon dioxide 4 Sulphuric acid
In which year, atmospheric observations using balloons started?
Who is the first female cosmonaut?
What is one light second?
difference between ancient age,middle age & modern age.
Bell metal is an alloy of 1 Brass an nickel 2 Zinc and copper 3 Tin and copper 4 None of these
Which was the international geo - physical year?
When and where was the tata institute of fundamental research founded?
Who discovered radio telescope?
What is the Metabolism ?
where is the indragandhi furnal in delhi, who is bulit in krishna sagar dam
example for navigation satellite?