NEET 2024 | Redox Reactions Question 3 | Chemistry

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NEET 2024

MCQ (Single Correct Answer)

-1

Which reaction is NOT a redox reaction?

$$\mathrm{Zn}+\mathrm{CuSO}_4 \rightarrow \mathrm{ZnSO}_4+\mathrm{Cu}$$

$$2 \mathrm{KClO}_3+\mathrm{I}_2 \rightarrow 2 \mathrm{KIO}_3+\mathrm{Cl}_2$$

$$\mathrm{H}_2+\mathrm{Cl}_2 \rightarrow 2 \mathrm{HCl}$$

$$\mathrm{BaCl}_2+\mathrm{Na}_2 \mathrm{SO}_4 \rightarrow \mathrm{BaSO}_4+2 \mathrm{NaCl}$$

NEET 2023 Manipur

MCQ (Single Correct Answer)

-1

The correct option for a redox couple is:

Both are oxidised forms involving same element.

Both are reduced forms involving same element.

Both the reduced and oxidised forms involve same element.

Cathode and anode together.

NEET 2023

MCQ (Single Correct Answer)

-1

On balancing the given redox reaction,

$$\mathrm{aCr}_{2} \mathrm{O}_{7}^{2-}+\mathrm{bSO}_{3}^{2-}(\mathrm{aq})+\mathrm{cH}^{+}(\mathrm{aq}) \rightarrow 2 \mathrm{aCr}^{3+}(\mathrm{aq})+\mathrm{bSO}_{4}^{2-}(\mathrm{aq})+\frac{\mathrm{c}}{2} \mathrm{H}_{2} \mathrm{O}(\ell)$$

the coefficients $$\mathrm{a}, \mathrm{b}$$ and $$\mathrm{c}$$ are found to be, respectively -

3, 8, 1

1, 8, 3

8, 1, 3

1, 3, 8

NEET 2022 Phase 2

MCQ (Single Correct Answer)

-1

Which of the following reactions is a decomposition redox reaction?

P₄(s) + 3OH^$$-$$(aq) + 3H₂O(l) $$\to$$ PH₃(g) + 3H₂PO$$_2^ - $$(aq)

2Pb(NO₃)₂(s) $$\to$$ 2PbO(s) + 4NO₂(g) + O₂(g)

N₂(g) + O₂(g) $$\to$$ 2NO(g)

Cl₂(g) + 2OH^$$-$$(aq) $$\to$$ ClO^$$-$$(aq) + Cl^$$-$$(aq) + 4H₂O(l)

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