Which of the following was invented by Sir Humphry Davy?
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Find out the odd word/letters/number/number pair from the given alternatives.
17.Rana walks 20 m straight in north direction and 20 m to the right. Then every turning to his left he walks 5, 25 and 25 metres respectively. How far is he from his starting point now?
Rayon is obtained from which among thefollowing?
The smallest blood vessels which are one-cell thick, are called ______
Which of the following award is given for distinguished service in any field including service rendered by the Government servants?
If (tanA + tanB)/(1 tanAtanB) = x, then the value of x is
2sin[(C+D)/2].cos[(C-D)/2] is equal to