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Antiknocking agent of unleaded petrol is...

Antiknocking agent of unleaded petrol is
(a) Dibromoethane
(b) Methyl-ethyl ether
(c) Propane
(d) Methyl tertiary Butyl ether

A

Dibromethane

B

Methyl-ethyl ether

C

Propane

D

Methyl tert. Butyl ether.

Text Solution

AI Generated Solution

The correct Answer is:
To determine the anti-knocking agent of unleaded petrol from the given options, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Question**: The question asks for the anti-knocking agent used in unleaded petrol. Anti-knocking agents are substances added to fuels to prevent knocking during combustion. 2. **Analyze the Options**: - **(a) Dibromoethane**: This compound is not commonly used as an anti-knocking agent in fuels. - **(b) Methyl-ethyl ether**: While ethers can have various applications, this specific ether is not recognized as an anti-knocking agent. - **(c) Propane**: Propane is a hydrocarbon fuel but does not serve as an anti-knocking agent. - **(d) Methyl tertiary butyl ether (MTBE)**: This is known to be an oxygenate and is commonly used as an additive in gasoline to improve octane ratings and reduce engine knocking. 3. **Identify the Correct Answer**: Among the options, Methyl tertiary butyl ether (MTBE) is the only compound that acts as an anti-knocking agent in unleaded petrol. It increases the octane number of the fuel, thereby preventing engine knocking. 4. **Conclusion**: The correct answer is (d) Methyl tertiary butyl ether. ### Final Answer: **(d) Methyl tertiary butyl ether** ---
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