Red form of HgS is used as a pigment under the name of _______.

An element of group 14 forms two oxides one of which is highlty poisionous and neutral. Other oxide can be easily liquefied and compressed to give a solid which is used as a refrigerant under the name of drikold. The element and the oxides are

Which of the following is used as fire extinguisher under the name pyrene ?

Red colour of tomato is due to which pigment

Which of the following is used as a white pigment?

Scheel's green, formerly used as a green pigment for colouring wall paper is.

Red skeletal muscles contain the pigment

Mineral found in red pigment of vertebrate blood is

if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base?

Name various pigments in different groups of algae.

Melanin pigment is synthesised or secreted under the influence of