EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Redox Reactions>JEE Main 18 March 2021 Shift 2>Q 2

MEDIUM

JEE Main

IMPORTANT

Earn 100

In Tollen's test for aldehyde, the overall number of electron(s) transferred to the Tollen's reagent formula ${[Ag {({NH}_{3})}_{2}]}^{+}$ per aldehyde group to form silver mirror is ___.(Round off to the Nearest integer)

50% studentsanswered this correctly

Important Questions on Redox Reactions

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Redox Reactions>JEE Main 17 March 2021 Shift 2>Q 3

The common positive oxidation states for an element with atomic number

24,

are:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Redox Reactions>JEE Main 17 March 2021 Shift 1>Q 4

15 mL

of aqueous solution of

{Fe}^{2 +}

in acidic medium completely reacted with

20 mL

of

0.03 M

aqueous

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

The molarity of the

{Fe}^{2 +}

solution is _______

\times 10^{- 2} M

(Round off to the Nearest Integer).

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Redox Reactions>JEE Main 16 March 2021 Shift 1>Q 5

2 {MnO}_{4}^{-} + {bC}_{2} O_{4}^{2 -} + {cH}^{+} \to {xMn}^{2 +} + {yCO}_{2} + {zH}_{2} O

If the above equation is balanced with integer coefficients, the value of

c

is _______ . (Round off to the Nearest Integer).

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Redox Reactions>JEE Main - 9th April 2016>Q 6

What will happen when a block of copper metal is dropped into a beaker containing a solution of

1 M

Z n S O_{4}

?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Redox Reactions>JEE Main - 8th April 2019 Shift 1>Q 7

In order to oxidize a mixture of one mole of each of

F e C_{2} O_{4}, F e_{2} {(C_{2} O_{4})}_{3}, F e S O_{4}

and

F e_{2} {(S O_{4})}_{3}

in acidic medium, the number of moles of

K M n O_{4}

is:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Redox Reactions>JEE Main - 8th April 2018>Q 8

The oxidation states of

Cr

in

[Cr {(H_{2} O)}_{6}] {Cl}_{3}, [Cr {(C_{6} H_{6})}_{2}]

and

K_{2} [Cr {(CN)}_{2} {(O)}_{2} (O_{2}) ({NH}_{3})]

, respectively, are:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Redox Reactions>JEE Main - 8th April 2018>Q 9

An alkali is titrated against acid with methyl orange as an indicator, which of the following is a correct combination?

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 6 - Redox Reactions>JEE Main - 8th April 2017>Q 10

The pair of compounds having metals in their highest oxidation state is