alleryStart learning →In a covalent double bond, the number of electron pairs shared is:
- 3
- 4
- 2
- 1
Show answer and solution
Correct answer: C. 2
A double bond shares 2 pairs (4 electrons) between the same two atoms.
Indian Navy 10+2 B.Tech Cadet Carbon and its Compounds — practice questions
Explore 7 free Carbon and its Compounds questions in Indian Navy 10+2 B.Tech Cadet Chemistry. Open each question or exercise to read its content, reference answers and available explanation.
Practise Carbon and its Compounds with Quill →Carbon and its Compounds questions and exercises with answers
Showing questions 1–7 of 7.
In a covalent double bond, the number of electron pairs shared is:Read the answer and worked solution →In alkaline KMnO₄, ethanol is converted to:Read the answer and worked solution →A molecule of ammonia (NH₃) hasRead the answer and worked solution →Buckminsterfullerene is an allotropic form ofRead the answer and worked solution →Ethanol reacts with sodium and forms two products. These areRead the answer and worked solution →The name of the compound $\mathrm{CH}_3 - \mathrm{CH}_2 - \mathrm{CHO}$ isRead the answer and worked solution →The first member of alkyne homologous series isRead the answer and worked solution →
Worked practice questions
In alkaline KMnO₄, ethanol is converted to:
- ethanal
- ethyl acetate
- ethanoic acid
- methanal
Show answer and solution
Correct answer: C. ethanoic acid
KMnO₄ oxidises ethanol (–CH₂OH) all the way to the carboxylic acid –COOH, giving ethanoic acid (vinegar).
A molecule of ammonia (NH₃) has
- only double bonds
- only triple bonds
- only single bonds
- two double bonds and one single bond
Show answer and solution
Correct answer: C. only single bonds
This Carbon and its Compounds item tests a core Chemistry concept.
Correct answer: only single bonds.
_Source: syllabus Exemplar Science Class 10_
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