Asked in Premeth Test 10 — Gases

Find the error in following sentence.Over the rocky levels of the mountain was a streak of rust coloured air

Correct answer: C. Rust coloured

  • A. Over the rocky levels
  • B. Of the mountain
  • C. Rust coloured
  • D. Air

Explanation

This is the problematic part. When used as a compound adjective to describe "air," it should be hyphenated as "rust-colored." This ensures clarity and correctness in modifying the nounThe correct answer is C) Rust coloured because the phrase should be hyphenated when used as a compound adjective. Hyphenate "rust coloured" to "rust-colored."Corrected Sentence:"Over the rocky levels of the mountain was a streak of rust-colored air."This correction ensures the compound adjective is correctly hyphenated, providing clear and accurate modification of the noun "air."

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Gas behaviour is explained through the kinetic molecular theory and the relationships among pressure, volume and temperature. Work includes STP, Boyle's and Charles's laws, absolute zero, the ideal gas equation, and the distinction between ideal and real gases, especially the effects of intermolecular forces and molecular volume.

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