Question

Which of the following is used in making printer’s ink, shoe polish, and black varnish?
(A) Lamp black
(B) Bone black
(C) Carbon black
(D) None of the above

Answer 1

Hint: To answer this question, we first need to understand what carbon is. Carbon is a chemical element with the atomic number 6 and the symbol C. It's nonmetallic and tetravalent, which means it has four electrons available for chemical bonding. It belongs to the periodic table's 14th group. Only roughly 0.025 percent of the Earth's crust is made up of carbon.

Complete answer:
Lamp black - Carbon black is a result of incomplete combustion of heavy petroleum compounds such FCC tar, coal tar, ethylene cracking tar, and vegetable matter. Carbon black is a Para crystalline carbon with a high surface-area-to-volume ratio, yet one that is lower than activated carbon.
Bone black - Charring animal bones produce a porous, black, granular substance known as bone char. Its composition varies depending on how it is created, but it primarily consists of tricalcium phosphate (57–80%), calcium carbonate (6%–10%), and carbon (7%–10%). Its main functions are filtration and decolorization.
Carbon black - Carbon black is a result of incomplete combustion of heavy petroleum compounds such FCC tar, coal tar, ethylene cracking tar, and vegetable matter. Carbon black is a Para crystalline carbon with a high surface-area-to-volume ratio, yet one that is lower than activated carbon.
For all of these uses, lamp black is used. Tires are made from carbon black. Bone black is used to remove the color from sugar.
So, option (A) is correct i.e., Lamp black.

Note:
Dye is a color-changing material that is used to modify the color of whatever it is applied to. Fabrics, hair, yarn and other textiles, clothing, and food are just a few of the things that dye is used for. You color something when you put dye on it.