Tag: science & technology

Which metal is the most common in the earth's crust?

Sudden change in pressure of which gas in blood causes cramp in deep sea diver coming up abruptly (bends/ decompression sickness/ Caisson disease)?

Element with atomic number 41 has 2 names, what are they?

What does the element Indium get its name from?

Presence of this element as an ingrediient of water supply pipes in ancient Rome reduced avarage lifetime of Roman by half. Which element?

Which element other than transuranic elements was first created in lab and then found in Nature in trace amounts as by-product of natural radioactivity?

What is the metallic element at the center of a molecule of the green pigment chlorophyll?

Haemoglobin that causes the red color of blood in vertebrates is formed around Iron atom. What is the metal radical in Haemocyanin in blood of cockroaches?

In lab, we found a metal element is solid when kept in a beaker, but melts as soon as you take it up on your palm. What metal is it possibly?

In a massive dying star that form red supergiants, elements higher in atomic number than Hydrogen & Helium also starts fusion due to crushing pressure of the star's own gravitation & form elements of higher atomic number & it continues recursively. Which is the element that is formed last with the maximum atomic number this way & heavier atoms beyoond this are formed in trace amounts only?