Which of following is used for making the explosive of crackers ?

Options

A. Sodium chloride
B. Salt petre
C. Soda
D. Blue vitriol

Answer

To determine which compound is used for making the explosive in firecrackers, follow these steps:

### Step 1: Identify Common Components of Firecrackers
Firecrackers typically contain various components that can produce a loud sound and colorful effects when ignited. One of the key components is an oxidizing agent that supports combustion.

### Step 2: Recognize the Role of Potassium Nitrate
Potassium nitrate, also known as KNO3, is a well-known oxidizing agent. It is commonly used in the production of explosives and fireworks due to its ability to release oxygen when heated, which helps in the combustion of other materials.

### Step 3: Understand the Chemical Composition
Potassium nitrate is an ionic compound composed of potassium ions (K⁺) and nitrate ions (NO3⁻). The presence of these ions allows it to act effectively as an oxidizer in explosive mixtures.

### Step 4: Identify Alternative Names
Potassium nitrate is also referred to as "saltpeter." This term encompasses a range of nitrate salts, but in the context of firecrackers, it specifically refers to potassium nitrate.

### Step 5: Conclude the Answer
Based on the information gathered, the correct answer to the question of which compound is used for making the explosive in firecrackers is potassium nitrate, or saltpeter.

### Final Answer
The compound used for making the explosive in firecrackers is **Saltpeter (Potassium Nitrate, KNO3)**.

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