Who discovered Potassium?
Humphry Davy
Potassium (K, atomic number 19) was discovered in 1807 by Sir Humphry Davy, who isolated it by electrolysis of molten potassium hydroxide (KOH) — the first metal to be isolated this way.
Alan Turing (computer science), Bill Gates (Microsoft) and Tim Berners-Lee (World Wide Web) are unrelated to element discovery.
According to Central Pollution Control Board (CPCB), particulate size ________ micrometres or less in diameter are responsible for causing the greatest harm to human health.
In Microsoft Word, _______ allows us to move selected paragraphs to the right.
An absolute ________ contains the complete address of a file on the Internet.
What is the full form of JPEG?
Netscape Navigator is a ________.
Who discovered Penicillin?
________ are designed to read and interpret HTML.
Who invented the electric tram?
________ acts as a shield absorbing ultraviolet radiation from the sun.
Who among the following scientists invented the Cotton Gin?
Who has developed the technology enabling India to shoot down fixed-wing drones using a laser beam?
Consider the following statements:
1. Aditya-L1, a space observatory with 9 payloads designed to study the Sun.
2. The VELC will take image the Sun's atmosphere, the Corona at high resolution and time cadence.
3. Aditya -L1 carries an ultraviolet imager, 3 X-ray spectrometer and four in -situ instruments to measure plasma parameters.
How many of the statements given above are correct?