(D) In the reaction $CaF_2 + H_2SO_4 \rightarrow CaSO_4 + 2HF$,the oxidation states of all elements $(Ca: +2, F: -1, H: +1, S: +6, O: -2)$ remain unch

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$CaF_2 + H_2SO_4 \rightarrow CaSO_4 + 2HF$

(D) In the reaction $CaF_2 + H_2SO_4 \rightarrow CaSO_4 + 2HF$,the oxidation states of all elements $(Ca: +2, F: -1, H: +1, S: +6, O: -2)$ remain unchanged on both sides of the equation.Since there is no change in oxidation states,this is an acid-base reaction,not a redox reaction.Therefore,it does not demonstrate the oxidizing behavior of concentrated $H_2SO_4$.

Class 11 Chemistry Redox Reactions Mix Examples-Redox Reactions

Medium

Hot concentrated sulphuric acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?

NEET 2016 All NEET

A
$Cu + 2H_2SO_4 \rightarrow CuSO_4 + SO_2 + 2H_2O$
B
$S + 2H_2SO_4 \rightarrow 3SO_2 + 2H_2O$
C
$C + 2H_2SO_4 \rightarrow CO_2 + 2SO_2 + 2H_2O$
D
$CaF_2 + H_2SO_4 \rightarrow CaSO_4 + 2HF$

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Which of the following is not correct?

MediumTS EAMCET 2005

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$A$ solution of $KMnO_4$ on reduction yields either a colourless solution,a brown precipitate,or a green solution depending on the $pH$ of the solution. What different stages of the reduction do these represent and how are they carried out?

Medium

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Assign $A, B, C, D$ from the given type of reaction:
$2AgNO_3 + 2NaOH \longrightarrow Ag_2O \downarrow + 2NaNO_3 + H_2O$

Medium

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Acidified potassium permanganate solution is decolourised by

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Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$SrCrO_4 \downarrow + 2AcOH \text{ (Excess)} \longrightarrow Sr(AcO)_2 + H_2Cr_2O_7$

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Hot concentrated sulphuric acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?

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Which of the following is not correct?

$A$ solution of $KMnO_4$ on reduction yields either a colourless solution,a brown precipitate,or a green solution depending on the $pH$ of the solution. What different stages of the reduction do these represent and how are they carried out?

Assign $A, B, C, D$ from the given type of reaction:$2AgNO_3 + 2NaOH \longrightarrow Ag_2O \downarrow + 2NaNO_3 + H_2O$

Acidified potassium permanganate solution is decolourised by

Assign $A$,$B$,$C$,$D$ from the given type of reaction.$SrCrO_4 \downarrow + 2AcOH \text{ (Excess)} \longrightarrow Sr(AcO)_2 + H_2Cr_2O_7$

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Assign $A, B, C, D$ from the given type of reaction:
$2AgNO_3 + 2NaOH \longrightarrow Ag_2O \downarrow + 2NaNO_3 + H_2O$

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$SrCrO_4 \downarrow + 2AcOH \text{ (Excess)} \longrightarrow Sr(AcO)_2 + H_2Cr_2O_7$