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Surface Chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistrySurface Chemistry1 Mark
MCQ
In a reaction, catalyst changes $.........$
$A.$ Physically.
$B.$ Qualitatively.
$C.$ Chemically.
$D.$ Quantitatively.
  • ✓
    $A$ and $B$
  • B
    $A$ and $C$
  • C
    $B$ and $C$
  • D
    $A$ and $D$
✓

Answer

Correct option: A.
$A$ and $B$
In a reaction catalyst changes physically and qualitatively as it is unaltered during the reaction and remains quantitatively intact after completion of reaction, and does not change chemically.

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