Question
Question: Main composition of lac is- A) Glue, pigment and sugar B) Wax, pigment and glue C) Resin, pigm...
Main composition of lac is-
A) Glue, pigment and sugar
B) Wax, pigment and glue
C) Resin, pigment, wax and glue
D) Resin, sugar and wax
Solution
Lac is a mixture of several substances, of which resin is the main constituent. It is used in the making of sealing wax, toys, bangles etc.
Complete answer:
The surmised level of various constituents of lac is: resin 68 to 90%, dye 2 to 10%, wax 5 to 6%, mineral substances 3 to 7%, albuminous substances 5 to 10%, and water 2 to 3%. Development starts when a farmer gets a stick that contains eggs prepared to incubate and attaches it to the tree to be infested. Thousands of lac insects colonize the parts of the host trees and emit the resinous pigment. The covered parts of the host trees are cut and gathered as stick-lac.
Lac is reaped by cutting the tree limbs that hold stick-lac. On the off chance that dye is being created, the insects are kept in the stick-lac on the grounds that the dye color originates from the insects instead of their gum. Lac is solvent in alcohol and weak bases but insoluble in water.
Additional information: Lac is the resinous discharge of various types of lac insects, of which the most usually developed is Kerria lacca. The word lac is gotten from the Sanskrit word laksha, which speaks to the number 100,000. It was utilized for both the lac insects (in view of their tremendous number) and the red resinous emission it produces. This resin has been utilized for making customary and ancestral bangles and still utilized as sealing wax by the India Post. It is additionally utilized as wood finish, skin cosmetic and dye for wool and silk in old India and neighboring regions.
Thus, correct option is (C) Resin, pigment, wax and glue.
Note: The leading producer of lac in Jharkhand, along with Chhattisgarh, West Bengal, and Maharashtra states of India.Resin has been utilized for making customary and ancestral bangles and still utilized as sealing wax by the India Post.