Which of the following was invented by Sir Humphry Davy?
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Who invented the contact lens?
Which is the highest award for gallantry during peacetime?
Rajiv Gandhi Khel Ratna awardee for 2015 was
Shaquille O'Neal is associated with which Sport?
In May 2017, the Base year of All India Index of Industrial Production (IIP) has been revised to ______.
If the length of the shadow of a vertical pole be √3 times the height of the pole, the angle of elevation of the sun is:
In terms of size, Neptune ranks no. ___ in our Solar System.