Chemical Bonding - Inorganic Chemistry - Chemistry Previous Year Questions

1

2016 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2016

Of the following molecules, which have shape similar to CO₂ ?

A

HgCl₂

B

SnCl₂

C

C₂H₂

D

NO₂

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2

2016 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2016

The correct order of O\(-\)O bond length in O₂, H₂O₂ and O₃ is

A

O₂ > O₃ > H₂O₂

B

H₂O₂ > O₃ > O₂

C

O₃ > O₂ > H₂O₂

D

O₃ > H₂O₂ > O₂

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3

2016 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2016

The number of \(\sigma\) and \(\pi\) bonds between two carbon atoms in calcium carbide are

A

one \(\sigma\), one \(\pi\)

B

one \(\sigma\), two \(\pi\)

C

two \(\sigma\), one \(\pi\)

D

one \(\sigma\), \(1{1 \over 2}\) \(\pi\)

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4

2016 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2016

The boiling points of HF, HCl, HBr and HI follow the order

A

HF > HCl > HBr > HI

B

HF > HI > HBr > HCl

C

HI > HBr > HCl > H

D

HCl > HF > HBr > HI

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5

2017 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2017

The shape of \(XeF_5^ -\) will be

A

square pyramid

B

trigonal bipyramidal

C

planar

D

pentagonal bipyramid

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6

2017 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2017

The ground state magnetic property of B₂ and C₂ molecules will be

A

B₂ paramagnetic and C₂ diamagnetic

B

B₂ diamagnetic and C₂ paramagnetic

C

Both are diamagnetic

D

Both are paramagnetic

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7

2018 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2018

Which of the following has the strongest H-bond?

A

O\(-\)H ... S

B

S\(-\)H ... O

C

F\(-\)H ... F

D

F\(-\)H ... O

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8

2018 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2018

Which statements are correct for the peroxide ion?

A

It has five completely filled anti-bonding molecular orbitals

B

It is diamagnetic

C

It has bond order one

D

It is isoelectronic with neon

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9

2019 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2019

The indicated atom is not a nucleophilic site in

A

\(\mathop B\limits_ \uparrow H_4^ -\)

B

\(\mathop C\limits_ \uparrow {H_3}Mgl\)

C

\(C{H_3}\mathop O\limits_ \uparrow H\)

D

\(C{H_3}\mathop N\limits_ \uparrow {H_2}\)

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10

2019 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2019

The H - N - H angle in ammonia is 107.6\(^\circ\) while the H - P - H angle in phosphine is 93.5\(^\circ\). Relative to phosphine, the p-character of the lone-pair on ammonia is expected to be

A

Less

B

More

C

Same

D

Cannot be predicted

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11

2020 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2020

A homonuclear diatomic gas molecule shows 2-electron magnetic moment. The one-electron and two-electron reduced species obtained from above gas molecule can act as both oxidising and reducing agents. When the gas molecule is one-electron oxidised the bond length decreases compared to the neutral molecule. The gas molecule is

A

N₂

B

Cl₂

C

O₂

D

B₂

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12

2020 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2020

Bond order of He₂, \(He_2^ +\) and \(He_2^{2 + }\) are respectively

A

1, \({1 \over 2}\), 0

B

0, \({1 \over 2}\), 1

C

\({1 \over 2}\), 1, 0

D

1, 0, \({1 \over 2}\)

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13

2021 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2021

The H₃O⁺ ions has the following shape

A

tetrahedral

B

pyramidal

C

triangular planar

D

"T" shaped

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14

2022 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2022

The boiling point of the water is higher than liquid HF. The reason is that

A

Hydrogen bonds are stronger in water.

B

Hydrogen bonds are stronger in HF.

C

Hydrogen bonds are larger in number in HF.

D

Hydrogen bonds are larger in number in water.

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15

2022 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2022

The correct bond order of B-F bond in BF₃ molecule is :

A

1

B

\(1{1 \over 2}\)

C

2

D

\(1{1 \over 3}\)

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16

2022 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2022

XeF₂, NO₂, HCN, ClO₂, CO₂.

Identify the non-linear molecule-pair from the above mentioned molecules.

A

XeF₂, ClO₂

B

CO₂, NO₂

C

HCN, NO₂

D

ClO₂, NO₂

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17

2023 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2023

The molecular shapes of SF\(_4\), CF\(_4\) and XeF\(_4\) are

A

the same with 2, 0 and 1 lone pairs of electrons on the central atoms, respectively.

B

the same with 1, 1 and 1 lone pairs of electrons on the central atoms, respectively.

C

different with 0, 1 and 2 lone pairs of electrons on the central atoms, respectively.

D

different with 1, 0 and 2 lone pairs of electrons on the central atoms, respectively.

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18

2023 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2023

The species in which nitrogen atom is in a state of sp hybridisation is

A

NO\(_3^-\)

B

NO\(_2\)

C

NO\(_2^+\)

D

NO\(_2^-\)

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19

2024 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2024

Which of the following contains maximum number of lone pairs on the central atom?

A

ClO\(_3^-\)

B

XeF\(_4\)

C

SF\(_4\)

D

I\(_3^-\)

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20

2025 · Chemistry · Inorganic Chemistry · Chemical Bonding

WB JEE 2025

The bond order of $\mathrm{HeH}^{+}$is

A

1

B

2

C

3

D

4

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