MCQ (Single Correct Answer)

1

Among $\mathrm{N}_2 \mathrm{O}, \mathrm{ClF}_2^{-}, \mathrm{SO}_2$ and $\mathrm{I}_3^{+}$, the species having the linear structures are

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2

Peroxide ion is

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3

In which of the following species, $\mathrm{sp}^3 \mathrm{~d}^2$ hybridisation is not associated?

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4

Which of the following hydrogen bonds is likely to be the weakest?

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5

Which of the following oxides is paramagnetic?

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6

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

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7

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

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8

The molecular shapes of SF$$_4$$, CF$$_4$$ and XeF$$_4$$ are

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9

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

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10

XeF2, NO2, HCN, ClO2, CO2.

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

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11

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

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12

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

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13
The H3O+ ions has the following shape
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14
Bond order of He2, $$He_2^ + $$ and $$He_2^{2 + }$$ are respectively
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15
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
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16
The indicated atom is not a nucleophilic site in
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17
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
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18
Which of the following has the strongest H-bond?
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19
The shape of $$XeF_5^ - $$ will be
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20
The ground state magnetic property of B2 and C2 molecules will be
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21
The boiling points of HF, HCl, HBr and HI follow the order
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22
The correct order of O$$-$$O bond length in O2, H2O2 and O3 is
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23
The number of $$\sigma$$ and $$\pi$$ bonds between two carbon atoms in calcium carbide are
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MCQ (More than One Correct Answer)