NextMockதேர்வுகளைத் தேடுங்கள், எ.கா. SSC CGL, UPPSC, Lekhpal
State PCS PYQPrelims 2023

BPSC – Combined Competitive Examination · வினா 29

Which of the following slows down the rate of a reaction?

  1. Catalytic promoter
  2. Homogeneous catalyst
  3. Heterogeneous catalyst
  4. None of the above
விடையைக் காட்டு & விளக்கம்

விடை: (D) None of the above

விளக்கம்

Reactions are slowed by inhibitors (negative catalysts or poisons), not by promoters or ordinary catalysts.

  • (A) தவறு

    Wrong: promoters increase catalyst activity.

  • (B) தவறு

    Wrong: catalysts generally speed up reactions.

  • (C) தவறு

    Wrong: catalysts generally speed up reactions.

  • (D) சரி

    Correct: only inhibitors/negative catalysts slow reactions, and none is listed.