Redox Reactions · Chemistry · MHT CET
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MHT CET 2024 16th May Morning Shift
What is the oxidation state of phosphorus in phosphate ion?
MHT CET 2024 15th May Evening Shift
What is change in oxidation number of nitrogen when $\mathrm{NO}_3^{-}$is converted to $\mathrm{NH}_4^{+}$ion?
MHT CET 2024 15th May Morning Shift
Calculate the oxidation number of Cr in $\mathrm{CrO}_4^{2-}$ ion and $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ respectively.
MHT CET 2024 11th May Evening Shift
Identify the correct statement for following reaction.
$$3 \mathrm{Mg}+\mathrm{N}_2 \longrightarrow \mathrm{Mg}_3 \mathrm{~N}_2$$
MHT CET 2024 11th May Morning Shift
What is oxidation number of S in $\mathrm{SO}_3^{2-}$ ?
MHT CET 2024 10th May Evening Shift
What is the change in oxidation number of S in following reaction?
$$\mathrm{H}_2 \mathrm{~S}+\mathrm{NO}_3^{-} \longrightarrow \mathrm{H}_2 \mathrm{O...
MHT CET 2024 10th May Morning Shift
What is the oxidation number of carbon in $\mathrm{K}_2 \mathrm{C}_2 \mathrm{O}_4 ?$
MHT CET 2024 10th May Morning Shift
What is the oxidation state of iodine in $\mathrm{I}_2 \mathrm{Cl}_6$ ?
MHT CET 2024 9th May Evening Shift
Which of the following changes involves transfer of 5 electrons?
MHT CET 2024 9th May Morning Shift
What is the value of $x$ and $y$ in order to balance following redox reaction?
$$\mathrm{xCuO}+\mathrm{yNH}_3 \longrightarrow \mathrm{xCu}+\mathrm{N}_...
MHT CET 2024 4th May Evening Shift
What is the oxidation state of S in $\mathrm{SO}_4^{2-}$ ?
MHT CET 2024 4th May Morning Shift
Which compound from following contains iodine with highest oxidation number?
MHT CET 2024 3rd May Evening Shift
In which of the following compounds chlorine has highest oxidation state?
MHT CET 2024 3rd May Morning Shift
Identify the element reduced in following reaction.
$$\mathrm{Cr}_2 \mathrm{O}_7^{2-}+14 \mathrm{H}^{+}+6 \mathrm{I}^{-} \longrightarrow 2 \mathrm{Cr}...
MHT CET 2024 2nd May Morning Shift
What is the oxidation number of underlined species in $\mathrm{PF}_6^{-}$and $\mathrm{V}_2 \mathrm{O}_7^{-4}$ ions respectively?
MHT CET 2023 14th May Evening Shift
Which among the following species is reduced by tin easily?
MHT CET 2023 14th May Morning Shift
What is the number of moles of electrons gained by one mole oxidizing agent in following redox reaction?
$$\mathrm{Zn_{(s)}+2HCl_{(aq)}}$$ $$\longrigh...
MHT CET 2023 13th May Evening Shift
Which from following elements exhibits usual tendency to undergo reduction?
MHT CET 2023 13th May Morning Shift
What is the change in oxidation number of selenium in the following redox reaction?
$$\mathrm{SeO}_{3(\text { (a) })}^{2-}+\mathrm{Cl}_{2(\mathrm{~g})...
MHT CET 2023 12th May Evening Shift
What is the change in oxidation number of $$\mathrm{Cr}$$ in the following redox reaction?
$$3 \mathrm{H}_2 \mathrm{O}_{2(\mathrm{aq})}+\mathrm{Cr}_2 ...
MHT CET 2023 11th May Evening Shift
What is the oxidation number of sulfur in $$\mathrm{H}_2 \mathrm{SO}_5$$ ?
MHT CET 2023 10th May Evening Shift
Identify the elements undergoing reduction and oxidation respectively in the following redox reaction.
$$3 \mathrm{H}_3 \mathrm{AsO}_{3(\mathrm{aq})}+...
MHT CET 2023 10th May Morning Shift
What is the value of $$x$$ in order to balance following redox reaction?
$$\mathrm{Mn}_{(\mathrm{aq})}^{2+}+x \mathrm{ClO}_{3(\mathrm{aq})}^{-} \right...
MHT CET 2023 9th May Morning Shift
What is the oxidation state of carbon in $$\mathrm{CaC}_2$$ and $$\mathrm{K}_2 \mathrm{C}_2 \mathrm{O}_4$$ respectively?
MHT CET 2022 11th August Evening Shift
Which one of the following conversions does NOT involve either oxidation or reduction?
MHT CET 2021 24th September Evening Shift
Which among the following reactions exhibits the reducing property of ozone?
MHT CET 2021 24th September Evening Shift
Which of following is NOT a redox reaction?
MHT CET 2021 24th September Morning Shift
What is the change in oxidation number of nitrogen in following conversion?
$$\mathrm{NO}_3^{-} \longrightarrow \mathrm{NO}_2$$
MHT CET 2021 22th September Evening Shift
Identify reducing agent in following reaction
$$\mathrm{H}_2 \mathrm{O}_{2(\mathrm{ag})}+\mathrm{ClO}_{4(\mathrm{aq})}^{-} \rightarrow \mathrm{ClO}_{2...
MHT CET 2021 22th September Morning Shift
Identify reductant in following reaction.
$$\mathrm{H}_2 \mathrm{~S}+\mathrm{NO}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{NO}+\mathrm{S}$$...
MHT CET 2021 21th September Morning Shift
Oxidation state of Cr in potassium dichromate is
MHT CET 2021 20th September Evening Shift
What is the value of '$$\mathrm{x}$$' in order to balance the following redox reaction by ion electron method? $$\quad \mathrm{x} \mathrm{H}_2 \mathrm...
MHT CET 2021 20th September Morning Shift
Identify reductant in following reaction.
$$\mathrm{{C_2}O_4^{2 - } + MnO_4^ - + {H^ + } \longrightarrow M{n^{2 + }} + C{O_2} + {H_2}O}$$...
MHT CET 2020 19th October Evening Shift
What is the oxidation number of Mn in MnO$^{2-}_4$ ion?
MHT CET 2020 16th October Evening Shift
Which among the following is used as an oxidising agent to bleach wood pulp into white paper?
MHT CET 2020 16th October Morning Shift
What is the oxidation number of As in H$$_3$$AsO$$_3$$ ?
MHT CET 2019 3rd May Morning Shift
Which of the following oxides can act both as an oxidising agent as well as reducing agent?
MHT CET 2019 3rd May Morning Shift
Oxidation state of nitrogen in nitric oxide is
MHT CET 2019 3rd May Morning Shift
In which among the following compounds, oxidation number of nitrogen is +5 ?
MHT CET 2019 2nd May Evening Shift
The oxidation number of sulphur in $\mathrm{S}_8$ molecule is
MHT CET 2019 2nd May Evening Shift
The oxidation state of sulphur in $\mathrm{H}_2 \mathrm{S}_2 \mathrm{O}_7$ is
MHT CET 2019 2nd May Evening Shift
The ionic charges of manganate and permanganate ion are respectively
MHT CET 2019 2nd May Morning Shift
$$\begin{aligned}
& \text { In the reaction, } \\
& \mathrm{MnO}_4^{-1}(a q)+\mathrm{Br}^{-1}(a q) \longrightarrow \mathrm{MnO}_2(s)+\mathrm{BrO}_3^{-...