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JEE Advanced

Explore popular questions from d and f Block Elements for JEE Advanced. This collection covers d and f Block Elements previous year JEE Advanced questions hand picked by experienced teachers.

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d and f Block Elements

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Q 1. The metal present in vitamin {tex} \mathrm { B } _ { 12 } {/tex} is

Cobalt

B

Iron

C

Manganese

D

Magnesium

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Q 2. Traces of {tex} \mathrm { MnO } _ { 4 } ^ { - } {/tex} in conc. {tex} \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex} may change to

A

{tex} \mathrm { Mn } _ { 2 } \mathrm { O } _ { 7 } ^ { - } {/tex}

{tex} \mathrm { MnO } _ { 3 } ^ { + } {/tex}

C

{tex} \mathrm { MnO } _ { 2 } {/tex}

D

{tex} \mathrm { MnO } _ { 4 } ^ { 2 - } {/tex}

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Q 3. A white solid {tex} Y , {/tex} on heating gives off a gas which turns lime water milky; the residue is yellow when hot; white when cold. The solid {tex} Y {/tex} is probably

{tex} \mathrm { ZnCO } _ { 3 } {/tex}

B

{tex} \mathrm { PbCO } _ { 3 } {/tex}

C

{tex} \mathrm { ZnSO } _ { 4 } {/tex}

D

{tex} \mathrm { Zn } \left( \mathrm { NO } _ { 3 } \right) _ { 2 } {/tex}

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Q 4. Which is the coloured ion

A

{tex} \left[ \mathrm { Cu } ( \mathrm { CN } ) _ { 4 } \right] ^ { 3 - } {/tex}

B

{tex} \left[ \mathrm { Sc } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 6 } \right] ^ { 3 + } {/tex}

{tex} \left[ \mathrm { Mn } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 6 } \right] ^ { 3 + } {/tex}

D

All of these

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Q 5. The trivalent ion having largest size is

A

{tex} \mathrm { Ti } {/tex}

B

{tex}\mathrm{Zr} {/tex}

C

{tex} \mathrm { Hf } {/tex}

{tex} \mathrm { L } \mathrm { a } {/tex}

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Q 6. Addition of {tex} \mathrm { SnCl } _ { 2 } {/tex} to {tex} \mathrm { HgCl } _ { 2 } {/tex} give precipitate

A

White turning to red

White turning to grey

C

Black turning to white

D

None of the above

Explanation

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Q 7.

The oxygen carrying pigment, oxy-haemocyanin, containing two copper ions is diamagnetic, because

The two copper ions are in +1 oxidation state

B

One of the copper ions is in +1 oxidation state and the other is in +2 oxidation state

C

There are strong anti-ferromagnetic interactions between the two copper ions

D

There are ferromagnetic interactions between the two copper ions

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Q 8.

Select the correct statement

A

is called epsom salt

B

is isomorphous with Glauber’s salt

with is called lithopone

D

All the above are correct statement

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Q 9.

Which of the following is paramagnetic as well as coloured ion?

A

C

D

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Q 10.

Which one of the following nitrates will leave behind a metal on strong heating?

A

Ferric nitrate

B

Copper nitrate

C

Manganese nitrate

Silver nitrate

Explanation

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Q 11.

Out of isostructural are

A

B

Both (a) and (b)

D

None of these

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Q 12.

(trivalent lanthanides ions) have EC

to

B

to

C

to

D

to

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Q 13.

Stainless steel is an alloy of

A

Cu

Ni and Cr

C

D

Zn

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Q 14.

Hypo

A

Dissolves in photographic plate

B

Gives white precipitate with white precipitate changes to black on dilution

Gives both reactions

D

Gives none of the above reactions

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Q 15.

Calomel on reaction with ammonium hydroxide gives

A

B

C

Explanation

white black

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Q 16.

Which forms protective and non-corrosive oxide layer?

B

C

D

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Q 17.

What are the species and in the following

A

B

C

Explanation

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Q 18.

The metal present in vitamin is

Cobalt

B

Iron

C

Manganese

D

Magnesium

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Q 19.

Of the following transition metals, the maximum number of oxidation states are exhibited by

A

Chromium

Manganese

C

Iron

D

Titanium

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Q 20.

The correct order of ionic radii of and is

(Atomic number of )

A

B

C

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Q 21.

Coagulation of blood takes place by

A

Ferric alum

B

Potash alum

Both (a) and (b)

D

None of these

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Q 22.

spot can be bleached by

A

B

C

All of these

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Q 23.

If would exist as a complex, one mole of it in aqueous solution on reaction with excess of forms

1 mole of (white precipitate)

B

2 moles of

C

3 moles of

D

No reaction

Explanation

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Q 24.

A certain metal will liberate hydrogen from dilute acids. It will react with water to form hydrogen only when the metal is heated and the water is in the form of steam. The metal is probably

Iron

B

Potassium

C

Copper

D

Mercury

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Q 25.

Most transition metals

I. forms sets of compounds which display different oxidation states of the metal

II. form coloured ions in solution

III. burn vigorously in oxygen

IV. replace from dilute acids

A

I, II, III are correct

B

II, III, IV and correct

I, II are correct

D

All are correct