Q7. Which of the following is obtained from Coal Tar?
कोलटार से हमें क्या मिलता है?
(a) Petrol / पेट्रोल
(b) Coke / कोक
(c)Air / हवा
(d) Naphthalene Balls/नैफथलीन बॉल
Answers
Answer:
Naphthalene Balls are obtained from coal tar
Explanation:
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Answer:
(d) Naphthalene Balls/नैफथलीन बॉल
Most naphthalene is derived from coal tar. From the 1960s until the 1990s, significant amounts of naphthalene were also produced from heavy petroleum fractions during petroleum refining, but today petroleum-derived naphthalene represents only a minor component of naphthalene production.
More information
What is obtained from coal tar?
Coal tar: It is obtained as a by-product in the process of making coke. Though its colour is the same as coke, tar is a highly viscous liquid. ... Coal tar is widely used to manufacture paints, perfumes, synthetic dyes, photographic material, drugs and explosives.
Why naphthalene is aromatic?
Naphthalene, with two fused rings, is the simplest polycyclic aromatic molecule. Note that all the carbon atoms except those at the points of fusion have a bond to a hydrogen atom. Naphthalene, which has 10 π electrons, satisfies the Hückel rule for aromaticity.