Name the product of coal which is thick black liquid having an unpleasant smell.

Options

A. Coal tar
B. Coal gas
C. Coke
D. Gasoline

Answer

To answer the question, "Name the product of coal which is a thick black liquid having an unpleasant smell," we can follow these steps:

### Step 1: Understand the Formation of Coal
- Coal is a fossil fuel formed from the remains of dead and decaying plants and animals over millions of years through a process called carbonization.

### Step 2: Identify the Products of Coal
- Coal has several useful products, including coal gas, coal tar, and coke.

### Step 3: Describe the Characteristics of Coal Tar
- Among these products, coal tar is specifically noted for being a thick black liquid.
- It is also characterized by its unpleasant smell.

### Step 4: Provide the Answer
- Therefore, the product of coal that is a thick black liquid with an unpleasant smell is **coal tar**.

### Final Answer
- The answer is **coal tar**.

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