Chemical Bonding · Chemistry · WB JEE
MCQ (Single Correct Answer)
1
Which of the following hydrogen bonds is likely to be the weakest?
WB JEE 2025
2
Which of the following oxides is paramagnetic?
WB JEE 2025
3
The bond order of $\mathrm{HeH}^{+}$is
WB JEE 2025
4
Which of the following contains maximum number of lone pairs on the central atom?
WB JEE 2024
5
The molecular shapes of SF$$_4$$, CF$$_4$$ and XeF$$_4$$ are
WB JEE 2023
6
The species in which nitrogen atom is in a state of sp hybridisation is
WB JEE 2023
7
XeF2, NO2, HCN, ClO2, CO2.
Identify the non-linear molecule-pair from the above mentioned molecules.
WB JEE 2022
8
The boiling point of the water is higher than liquid HF. The reason is that
WB JEE 2022
9
The correct bond order of B-F bond in BF3 molecule is :
WB JEE 2022
10
The H3O+ ions has the following shape
WB JEE 2021
11
Bond order of He2, $$He_2^ + $$ and $$He_2^{2 + }$$ are respectively
WB JEE 2020
12
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
WB JEE 2020
13
The indicated atom is not a nucleophilic site in
WB JEE 2019
14
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
WB JEE 2019
15
Which of the following has the strongest H-bond?
WB JEE 2018
16
The shape of $$XeF_5^ - $$ will be
WB JEE 2017
17
The ground state magnetic property of B2 and C2 molecules will be
WB JEE 2017
18
The boiling points of HF, HCl, HBr and HI follow the order
WB JEE 2016
19
The correct order of O$$-$$O bond length in O2, H2O2 and O3 is
WB JEE 2016
20
The number of $$\sigma$$ and $$\pi$$ bonds between two carbon atoms in calcium carbide are
WB JEE 2016