Which of the following is obtained from coal tar ?a)Petrolb)Cokec)Aird)Naphthalene ballsCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Coal tar (liquid): Coal tar is a mixture of different carbon compounds. It is thick, black liquid with an unpleasant smell. The fractional distillation of coal tar gives many chemical substances which are used in the preparation of dyes, explosives, paints, synthetics fibers, drugs, and pesticides. Some of these chemical substances are benzene, toluene, phenol, and aniline. Naphthalene balls are used to repel moth and other insects are also obtained from coal tar.

Answer

A thick black liquid produced by destructive distillation by bituminous coal. it contains benzene , napthelene, phenols, aniline and many other organic chemical. correct option is d.

Answer

(2) Coal tar (liquid):

Coal tar is a mixture of different carbon compounds. It thick, black liquid with unpleasant smell. The fractional distillation of coal tar gives many chemical substances which are used in the preparation of dyes, explosives, paints, synthetics fibers, drugs, and pesticides. Some of these chemical substances are benzene, toluene, phenol and aniline. Naphthalene balls used to repel moth and other insects are also obtained from coal tar.

Answer

D) Naphthalene balls

Answer

Ans d is right. coaltar is a mixture of many substance. it is liquid with unpleasant smell. caoltar is used in many purpose. like make dye drugs. etc

Answer

Petrol

Answer

Peteol

Answer

Naphthalene balls d

Answer

Napthalene balls

Answer

Naphthalene is a  Polycyclic aromatic hydrocarbon compound. It is derived from crude oil and or coal tar during the production of steel.  Typical coal tar is 10%naphthalene by weight.It is crystallized from coal tar fraction at boiling point 210-220 degree Celsius. It is components of the crude oil and a product of natural combustion. Due to strong smell of naphthalene it acts as moth repellent. It is generally kept in cupboard containing clothes, books etc to prevent damage due to attack of moth.

Answer

D

Answer

Petol

Answer

Coal Tar
Coal tar is a thick, black, sticky liquid that is obtained during the process of coal gasification or coal carbonization. It is a byproduct of coal processing and is formed when coal is heated in the absence of air. Coal tar is composed of various organic compounds, including aromatic hydrocarbons, phenols, and polycyclic aromatic hydrocarbons (PAHs).

Naphthalene
Naphthalene is a common compound that is obtained from coal tar. It is a white crystalline solid with a strong odor and is flammable. Naphthalene is used for various purposes, including as a moth repellent and as a starting material for the synthesis of other chemicals.

Naphthalene Balls
Naphthalene balls, also known as mothballs, are small white balls that contain naphthalene as their primary ingredient. They are used to repel and kill moths, larvae, and other insects that can damage clothing and fabrics. Naphthalene balls release a gas that is toxic to insects, which helps in protecting clothes and other stored items.

The correct answer to the given question is option 'D' - Naphthalene balls. Naphthalene balls are obtained from coal tar, which is a byproduct of coal processing. The process of coal gasification or coal carbonization produces coal tar, which is then further processed to extract various organic compounds, including naphthalene. Naphthalene is then used as the primary ingredient in the production of naphthalene balls or mothballs.

The other options listed in the question are not obtained directly from coal tar. Here is a brief explanation of each option:

- Petrol: Petrol, also known as gasoline, is not directly obtained from coal tar. It is a fuel that is primarily derived from crude oil through a refining process.

- Coke: Coke is a fuel that is obtained by heating coal in the absence of air. It is used as a fuel in various industries, but it is not directly obtained from coal tar.

- Air: Air is a mixture of gases, primarily nitrogen, oxygen, carbon dioxide, and trace amounts of other gases. It is not obtained from coal tar.

In conclusion, naphthalene balls are obtained from coal tar, which is a byproduct of coal processing. Naphthalene is extracted from coal tar and used as the primary ingredient in the production of naphthalene balls or mothballs.

Answer

(a)  petrol

Answer

D is the right answer because it's have many chemical compounds including naphthalene

Answer

Option d.
According to the method, coal tar is taken as a raw material; naphthalene is fractionated through a weight-removing column; firstly crude naphthalene is obtained; and then industrial naphthalene is prepared through a crude naphthalene rectifying column.

Answer

Neptalene balls

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