(04-01-2018) Main Group Elements - IIT JAM MCQ

All of these

F > Cl > Br > Me

Me > F > Cl > Br

Br > Cl > F > Me

 Me > Br > Cl > F

IF₃ > BrF₃ > ClF₃

BrF₃ > IF₃ > ClF₃

ClF₃ > BrF₃ > IF₃

ClF₃ > IF₃ > BrF₃

NH₃

PH₃

AsH₃

SbH₃

α > β

α < β

α = β

None of these

Na⁺ ions are produced in solution

A blue coloured solution is obtained

The solution acts as a good conductor of electricity.

Liquid ammonia remains diamagnetic

B₅H₉

B₆H₁₀

B₂H₆

All of these

I > II > III > IV

IV > III > II > I

II > I > III > IV

III > IV > II > I

PbF₄

PbCl₄

XeCl₆

TlCl₃

HF

HCl

HBr

HI

HgCl₂ & SnCl₂

HgCl₂ & SnCl₄

SnCl₄ & FeCl₃

SnCl₄ & PbCl₄

CO is a soft base and BH₃ and BF₃ are soft and hard acids respectively

CO is a hard base and BH₃ and BF₃ are hard and soft acids respectively

CO is a soft base and BH₃ and BF₃ are hard and soft acids respectively

CO is a soft acid and BH₃ and BF₃ are soft and hard bases respectively

It exists as a bridged dimer

It exists as a coordinated complex with both +1 and +3 oxidation states

It exists as monomer GaCl₂

All of these.

Four mole of boric acid is obtained

Four mole of B(OH)₄^– is obtained

Two mole of H₃BO₃ and two mole of B(OH)₄^– is obtained

One mole of B(OH)₃ and there mole of B(OH)₃^– is obtained

(BeH₂)_n

B₂H₆

Be(BH₄)₂

All of these

Acidic

Neutral

Alkaline

Amphoteric 

BeCl₂ < MgCl₂ < CaCl₂

MgCl₂ < CaCl₂ < BeCl₂

CaCl₂ < MgCl₂ < BeCl₂

CaCl₂ < BeCl₂ < MgCl₂

All are correct

Both have 3c – 4e^– bond

Both have sp³ hybridization for the central atom

Both are non polar

All above are correct.

KO₂

BeO₂

SrO₂

BaO₂

N

S

Cl

F

SF₆ is thermodynamically more stable

It is kinetically more stable

F do not have vacant d-orbital

F is highly electronegative atom, so it form strong bond with sulphur

CF₃OH + I^–

CF₃O^– + HI

CF₃H + IO^–

None of these.

B₂Cl₄ < B₂F₄ < B₂(OR)₄ < B₂(NR₂)₄

B₂(NR₂)₄ < B₂(OR)₄ < B₂Cl₄ < B₂F₄

B₂F₄ < B₂Cl₄ < B₂(NR₂)₄ < B₂(OR)₄

B₂(OR)₄ < B₂(NR₂)₄ < B₂F₄ < B₂Cl₄

Of localized electrons in it     

Borazole is polar compound

Borazole is non-polar compound

Borazole is electron deficient compound

Addition of borax

Addition of cis-1, 2 diol

Addition Na₂HPO₄

Addition of trans-1, 2-diol

With a linear F-bridge

With H-bond

With an angular F-bridge       

With tetrahedral F-bridge

XeOF₂ + HF

XeO₂F⁺ + HF

XeO₃ + HF

XeO₃ + XeF₂ + HF

Monobasic acid and dibasic acid

Monobasic acid and tribasic acid

Monobasic acid and a salt      

Dibasic acid and tribasic acid.