Examlex
How many structural isomers are possible for a substance having the molecular formula C₄H₁₀?
Grammatical Rules
The set of structural principles governing the composition of clauses, phrases, and words in any given natural language.
Primary Cause
The main or initiating factor that leads to an event or condition.
Missing Word
A word that is left out or omitted from a text or sentence, often used in language tests to assess comprehension or vocabulary.
Sentence
A set of words that is complete in itself, typically containing a subject and predicate, conveying a statement, question, exclamation, or command.
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