Question 1: Palette 1/18

JEE Advanced 2025 MSQ

The pair(s) of diamagnetic ions is(are)

A

La³⁺, Ce⁴⁺

B

Yb²⁺, Lu³⁺

C

La²⁺, Ce³⁺

D

Yb³⁺, Lu²⁺

Question 2: Palette 2/18

JEE Advanced 2023 MCQ

In the scheme given below, $\mathbf{X}$ and $\mathbf{Y}$, respectively, are

A

$\mathrm{CrO}_4{ }^{2-}$ and $\mathrm{Br}_2$

B

$\mathrm{MnO}_4{ }^{2-}$ and $\mathrm{Cl}_2$

C

$\mathrm{MnO}_4{ }^{-}$and $\mathrm{Cl}_2$

D

$\mathrm{MnSO}_4$ and $\mathrm{HOCl}$

Question 3: Palette 3/18

JEE Advanced 2022 MSQ

The treatment of galena with $\mathrm{HNO}_{3}$ produces a gas that is

A

paramagnetic

B

bent in geometry

C

an acidic oxide

D

colorless

Question 4: Palette 4/18

JEE Advanced 2019 MSQ

With reference to aqua-regia, choose the correct option(s).

A

Aqua-regia is prepared by mixing conc. HCl and conc. HNO₃ in 3 : 1 (v / v) ratio

B

The yellow colour of aqua-regia is due to the presence of NOCl and Cl₂

C

Reaction of gold with aqua-regia produces an anion having Au in +3 oxidation state

D

Reaction of gold with aqua regia produces NO₂ in the absence of air

Question 5: Palette 5/18

JEE Advanced 2019 MSQ

Fusion of MnO₂ with KOH in presence of O₂ produces a salt W. Alkaline solution of W upon electrolytic oxidation yields another salt X. The manganese containing ions present in W and X, respectively, are Y and Z. Correct statement(s) is (are)

A

Both Y and Z are coloured and have tetrahedral shape

B

Y is diamagnetic in nature while Z is paramagnetic

C

In both Y and Z, $\pi $-bonding occurs between p-orbitals of oxygen and d-orbitals of manganese

D

In aqueous acidic solution, Y undergoes disproportionation reaction to give Z and MnO₂

Question 6: Palette 6/18

JEE Advanced 2019 MCQ

The green colour produced in the borax bead test of a chromium (III) salt is due to

A

Cr₂O₃

B

CrB

C

Cr(BO₂)₃

D

Cr₂(B₄O₇)₃

Question 7: Palette 7/18

JEE Advanced 2018 MSQ

The correct option(s) to distinguish nitrate salts of $M{n^{2 + }}$ and $C{u^{2 + }}$ taken separately is (are)

A

$M{n^{2 + }}$ shows the characteristic green color in the flame test

B

Only $C{u^{2 + }}$ shows the formation of precipitate by passing ${H_2}S$ in acidic medium

C

Only $M{n^{2 + }}$ shows the formation of precipitate by passing ${H_2}S$ in faintly basic medium

D

$C{u^{2 + }}/Cu$ has higher reduction potential than $M{n^{2 + }}/Mn$ (measured under similar conditions)

Question 8: Palette 8/18

JEE Advanced 2017 MSQ

The options(s) with only amphoteric oxides is (are)

A

$C{r_2}{O_3},BeO,SnO,Sn{O_2}$

B

$C{r_2}{O_3},CrO,SnO,PbO$

C

$NO,{B_2}{O_3},PbO,Sn{O_2}$

D

$ZnO,A{l_2}{O_3},PbO,Pb{O_2}$

Question 9: Palette 9/18

JEE Advanced 2017 MCQ

Which of the following combination will produce ${H_2}$ gas ?

A

Fe metal and conc. $HN{O_3}$

B

$Cu$ metal and conc. $HN{O_3}$

C

$Zn$ metal and $NaOH(aq)$

D

Au metal and $NaCN\left( {aq} \right)$ in the presence of air

Question 10: Palette 10/18

JEE Advanced 2016 MSQ

The reagent(s) that can selectively precipitate S^2- from a mixture of S^2- and SO₄^2- in aqueous solution is (are) :

A

CuCl₂

B

BaCl₂

C

Pb(OOCCH₃)₂

D

Na₂[Fe(CN)₅NO]

Question 11: Palette 11/18

JEE Advanced 2016 MCQ

In the following reaction, sequence in aqueous solution, the species X, Y and Z, respectively, are

${S_2}O_3^{2 - }\buildrel {A{g^ + }} \over \longrightarrow \mathop X\limits_{Clear\,solution} \buildrel {A{g^ + }} \over \longrightarrow \mathop Y\limits_{White\,precipitate} \buildrel {With\,time} \over \longrightarrow \mathop Z\limits_{Black\,precipitate} $

A

[Ag(S₂O₃)₂]^3$-$, Ag₂S₂O₃, Ag₂S

B

[Ag(S₂O₃)₂]^5$-$, Ag₂SO₃, Ag₂S

C

[Ag(SO₃)₂]^3$-$, Ag₂S₂O₃, Ag

D

[Ag(SO₃)₃]^3$-$, Ag₂SO₄, Ag

Question 12: Palette 12/18

JEE Advanced 2015 MSQ

The pairs of ions where BOTH the ions are precipitated upon passing H₂S gas in presence of dilute HCl, is(are)

A

Ba²⁺, Zn²⁺

B

Bi³⁺, Fe³⁺

C

Cu²⁺, Pb²⁺

D

Hg²⁺, Bi³⁺

Question 13: Palette 13/18

JEE Advanced 2015 MSQ

The correct statements about Cr²⁺ and Mn³⁺ is(are) (Atomic numbers of Cr = 24 and Mn = 25)

A

Cr²⁺ is a reducing agent.

B

Mn³⁺ is an oxidizing agent.

C

both Cr²⁺ and Mn³⁺ exhibit d⁴ electronic configuration.

D

when Cr²⁺ is used as a reducing agent, the chromium ion attains d⁵ electronic configuration.

Question 14: Palette 14/18

JEE Advanced 2014 MSQ

Upon heating with Cu₂S, the reagent(s) that give copper metal is/are

A

CuFeS₂

B

CuO

C

Cu₂O

D

CuSO₄

Question 15: Palette 15/18

JEE Advanced 2014 MSQ

The pair(s) of reagents that yield paramagnetic species is/are

A

Na and excess of NH₃

B

K and excess of O₂

C

Cu and dilute HNO₃

D

O₂ and 2-ethylanthraquinol

Question 16: Palette 16/18

JEE Advanced 2013 MCQ

Upon treatment with ammoniacal H₂S, the metal ion that precipitates as a sulphide is

A

Fe(III)

B

Al(III)

C

Mg(II)

D

Zn(II)

Question 17: Palette 17/18

JEE Advanced 2012 MSQ

For the given aqueous reactions, which of the statement(s) is(are) true?

A

The first reaction is a redox reaction.

B

White precipitate is Zn₃[Fe(CN)₆]₂.

C

Addition of filtrate to starch solution gives blue colour.

D

White precipitate is soluble in NaOH solution.

Question 18: Palette 18/18

JEE Advanced 2012 MCQ

The colour of light absorbed by an aqueous solution of CuSO₄ is

A

orange-red

B

blue-green

C

yellow

D

violet