(B) catalyst is a substance that increases the rate of a reaction without itself being consumed at the end of the reaction. It is important to note th

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$A$ catalyst can initiate a reaction.

(B) catalyst is a substance that increases the rate of a reaction without itself being consumed at the end of the reaction. It is important to note that a catalyst cannot initiate a reaction that is not thermodynamically feasible. It only lowers the activation energy,thereby increasing the rate of reaction. Therefore,the statement that a catalyst can initiate a reaction is false.

Class 12 Chemistry Surface Chemistry Catalyst and Catalysis

Medium

Which of the following statements regarding catalyst is not true?

A
$A$ catalyst remains unchanged in composition and quantity at the end of the reaction.
B
$A$ catalyst can initiate a reaction.
C
$A$ catalyst does not alter the equilibrium in a reversible reaction.
D
Catalysts are sometimes very specific in respect of reaction.

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Class 12 Questions

Class 12

Chemistry Questions

Chapter

Surface Chemistry

Subtopic

Catalyst and Catalysis

Match the following.
List-$I$ (Reaction) List-$II$ (Catalyst)
$A$. $N_{2(g)} + 3H_{2(g)} \longrightarrow 2NH_{3(g)}$ $I$. $Ni$
$B$. $2H_{2(g)} + O_{2(g)} \longrightarrow 2H_2O_{(l)}$ $II$. $Pt$
$C$. $CO_{(g)} + 3H_{2(g)} \longrightarrow CH_{4(g)} + H_2O_{(g)}$ $III$. $ZnO-Cr_2O_3$
$D$. $CO_{(g)} + 2H_{2(g)} \longrightarrow CH_3OH_{(g)}$ $IV$. $Fe$

The correct answer is:

List-$I$ (Reaction)	List-$II$ (Catalyst)
$A$. $N_{2(g)} + 3H_{2(g)} \longrightarrow 2NH_{3(g)}$	$I$. $Ni$
$B$. $2H_{2(g)} + O_{2(g)} \longrightarrow 2H_2O_{(l)}$	$II$. $Pt$
$C$. $CO_{(g)} + 3H_{2(g)} \longrightarrow CH_{4(g)} + H_2O_{(g)}$	$III$. $ZnO-Cr_2O_3$
$D$. $CO_{(g)} + 2H_{2(g)} \longrightarrow CH_3OH_{(g)}$	$IV$. $Fe$

EasyAP EAMCET 2019

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