Correct Answer : Surface tension
The principle behind the working of a ball pen is surface tension and gravity. The ink gets spread over the ball due to surface tension. The flow of ink to the ball is based on the surface tension. If the surface tension is high, the ink won't spread over the ball properly.
Correct Answer : Knot
Nautical miles are used for charting and navigating. A knot is one nautical mile per hour (1 knot = 1.15 miles per hour ).
Correct Answer : O. Schmid
O Schmidt suggests the earth's origin is from gases and dust particles.
Correct Answer : Nitroglycerin
Nitroglycerine (NG) also known as nitroglycerine, trinitroglycerin, trinitroglycerine, trinitroxypropane and glyceryl trinitrate is a heavy, colorless, oily, explosive liquid obtained by nitrating glycerol.
Correct Answer : Pyrite
“Fool's Gold” is technically known as pyrite or iron sulfide (FeS₂) and is one of the most common sulfide minerals. Sulfide minerals are a group of inorganic compounds containing sulfur and one or more elements.
Correct Answer : Samuel Hahnemann
Correct Answer : hydrosphere
Correct Answer : Yellow
Correct Answer : Ionosphere
The ionosphere is a critical link in the chain of Sun-Earth interactions. This region is what makes radio communications possible. This is the upper limit of our atmosphere. It extends from the top of the thermosphere up to 10,000 km (6,200 mi).
Correct Answer : Taxonomy
