Which of the following reactions is not a red | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) redox reaction involves a change in the oxidation state of the elements involved. In the reaction $CaCO_3 	o CaO + CO_2$,the oxidation states are

Vedclass · Accepted Answer

$CaCO_3 	o CaO + CO_2$

Vedclass · Answer

(A) redox reaction involves a change in the oxidation state of the elements involved. In the reaction $CaCO_3 	o CaO + CO_2$,the oxidation states are: $Ca: +2, C: +4, O: -2$ in $CaCO_3$,$Ca: +2, O: -2$ in $CaO$,$C: +4, O: -2$ in $CO_2$. Since there is no change in the oxidation states of any element,this is a thermal decomposition reaction,not a redox reaction. In other options $(B, C, D)$,the oxidation states of the elements change,indicating they are redox reactions.

Which of the following reactions is not a redox reaction?

Similar Questions

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$Ca(OH)_2 + CO_2 \longrightarrow CaCO_3 \downarrow + H_2O$

Given below are two statements.
Statement-$I$: In the decomposition of potassium chlorate,$Cl$ is reduced.
Statement-$II$: Reaction of $Na$ with $O_2$ to form $Na_2O$ is a redox reaction.
The correct answer is

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$FeSO_4 + Na_2S \longrightarrow FeS \downarrow$

$A$ few drops of $KMnO_4$ solution are added to an acidic solution containing an anion. Which of the following,if present,will $NOT$ cause a change in the color of the $KMnO_4$ solution?

$H_2O_2$ reduces $KMnO_4$ in acidic medium to '$x$' and in basic medium to '$y$'. What are $x$ and $y$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module