Ethanol is chemically: MCQ with Answer and Explanation

Ethanol is chemically:
A. CH₃OH
B. C₂H₅OH
C. CH₃COOH
D. C₂H₅COOH
Answer: Option B
Solution (By JKExamLibrary)
Ethanol, commonly known as ethyl alcohol, has the chemical formula C₂H₅OH. Methanol is CH₃OH. Acetic acid (ethanoic acid) is CH₃COOH, and propionic acid is C₂H₅COOH. Ethanol is widely used as a solvent, in alcoholic beverages, and as a biofuel.

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Practice More chemistry Questions

Question #1
Which of the following sequences correctly represents the increasing order of forces of attraction between particles?
A. Sugar, water, oxygen
B. Water, sugar, oxygen
C. Oxygen, water, sugar
D. Oxygen, sugar, water

Correct Answer: Option C


Explanation:
The forces of attraction are minimum in gases, intermediate in liquids, and maximum in solids. Oxygen is a gas, water is a liquid, and sugar is a solid. Thus, the increasing order of intermolecular forces is oxygen < water < sugar, reflecting their respective physical states at room temperature.

This question belongs to: Science chemistry
Question #2
Which of the following compounds contains a coordinate covalent bond?
A. H₂O
B. Cl₂
C. NaCl
D. NH₄⁺

Correct Answer: Option D


Explanation:
In the ammonium ion (NH₄⁺), the nitrogen atom in ammonia (NH₃) shares its lone pair of electrons with a hydrogen ion (H⁺) which has no electrons. This type of bond, where both shared electrons are donated by a single atom, is a coordinate covalent (dative) bond.

This question belongs to: Science chemistry
Question #3
Which of the following elements has the highest electronegativity?
A. Oxygen
B. Fluorine
C. Chlorine
D. Nitrogen

Correct Answer: Option B


Explanation:
Fluorine is the most electronegative element (Pauling scale 3.98). Electronegativity increases across a period and decreases down a group. Hence F > O > Cl > N.

This question belongs to: Science chemistry