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MHT CET202411 May 2024Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which among the following P-block elements forms colourless and odourless hydride?

Options

  1. AOxygen
  2. BNitrogen
  3. CSulphur
  4. DSelenium

Correct answer

A. Oxygen

Step-by-step solution

Oxygen: Its hydride is water ( H ₂ O ) , which is a colorless, odorless liquid. Nitrogen: Its hydride is ammonia ( NH ₃ ) , which is colorless but has a strong, pungent odor. Sulphur: Its hydride is hydrogen sulfide ( H ₂ ~S ) , which is colorless but has a distinct, rotten-egg smell. Selenium: Its hydride is hydrogen selenide ( H ₂ Se ) , which has an extremely unpleasant odor. Only oxygen forms a hydride (water) that is both colorless and odorless.

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