Silicones differ from silica by a group of
Correct answer: A. -R
- A. -R
- B. -OH
- C. HCO3⁻
- D. O₂
Explanation
Silicones are polymeric compounds in which silicon atoms are bonded to organic groups, typically alkyl or aryl groups, denoted as -R. This structural feature sets silicones apart from silica, which lacks organic attachments and consists of silicon and oxygen in a network structure. Therefore, the correct answer is -R as it represents the organic groups present in silicones. The other options -OH, HCO3⁻, and O₂ are incorrect because they do not accurately reflect the structural distinction between silicones and silica.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.