🔬 Everyday Science

An ester is formed by:

A Two alcohols reacting
B A carboxylic acid reacting with an alcohol (condensation reaction)
C An amine and an acid
D Two alkenes

✓ Correct Answer: Option B

Esterification: RCOOH + R'OH → RCOOR' + H₂O. Fischer esterification uses acid catalyst.

💡 Why is B) the correct answer?

The correct answer to the question "An ester is formed by:" is Option B: A carboxylic acid reacting with an alcohol (condensation reaction).

The other options — A) Two alcohols reacting, C) An amine and an acid, D) Two alkenes — are incorrect for this Everyday Science question. As explained above: Esterification: RCOOH + R'OH → RCOOR' + H₂O. Fischer esterification uses acid catalyst.

📚 About This Everyday Science Practice Question

This 2-level Everyday Science question from the Chemistry - Elements & Compounds topic is part of One Paper Preparation's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free Everyday Science practice test or use flashcards for spaced repetition review.

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