Where was paper invented?
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Who invented the mouse of a computer?
Who discovered radioactivity?
Who invented the bifocal glasses?
Which of the following branches of mathematics was invented by Newton?
Physical Research Laboratory was founded by ____.
X-Rays, which are now used on a day to day basis for diagnosis in medicine, was discovered by?
In the following question, out of the given four alternatives, select the one which is opposite in meaning of the given word. Anile