Chemistry Crash Course NEET>Chapter 6 - Redox Reactions>Level 2>Q 37

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The number of moles of electrons needed to convert one mole of nitrate ion into hydrazine $(N_{2} H_{4})$ are

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Important Questions on Redox Reactions

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Chemistry Crash Course NEET>Chapter 6 - Redox Reactions>Level 2>Q 38

a. ${NaNO}_{2}$ b. ${NaNO}_{3}$ c. $HI$ d. ${SO}_{2}$ e. $O_{2}$ f. ${KMnO}_{4}$

Which of the following statement is not true about the given compounds?

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Chemistry Crash Course NEET>Chapter 6 - Redox Reactions>Level 2>Q 39

Which of the following will not decolorise the pink color of

{KMnO}_{4}

?

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Chemistry Crash Course NEET>Chapter 6 - Redox Reactions>Level 2>Q 40

The number of moles of

K_{2} {Cr}_{2} O_{7}

in an acidic medium required to oxidize one mole of

{Cu}_{3} P

to

CuO

and

H_{3} {PO}_{4}

is

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Chemistry Crash Course NEET>Chapter 6 - Redox Reactions>Level 2>Q 41

Volume of

{Al}_{2} {({Cr}_{2} O_{7})}_{3}

of molarity

0.1 M

required to react with

10 mL

of

0.018 M

{FeSO}_{4}

solution is

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Chemistry Crash Course NEET>Chapter 6 - Redox Reactions>Level 2>Q 42

A solution containing

1.6 \times 10^{- 3}

moles of

{Br}^{-}

ions require

(x)

mole of

{MnO}_{4}^{-}

in basic medium for oxidation of

{Br}^{-}

to

{BrO}_{3}^{-}

. Then

(x)

is

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Chemistry Crash Course NEET>Chapter 6 - Redox Reactions>Level 2>Q 43

The metal with the highest oxidation state present in

K_{2} {CrO}_{4}, {NbCl}_{5}

and

{MnO}_{2}

is:

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Chemistry Crash Course NEET>Chapter 6 - Redox Reactions>Level 2>Q 44

The number of electrons required to reduce chromium completely in

{Cr}_{2} {O_{7}}^{2 -}

to

{Cr}^{3 +}

in acidic medium, is

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Chemistry Crash Course NEET>Chapter 6 - Redox Reactions>Level 2>Q 45

In balancing the reaction,

{xH}_{2} S + 2 {NaNO}_{3} + 2 HCl \to y S + zNO + kNaCl + 4 H_{2} O

, one would get

x, y, z

and

K,

respectively, as