1
JEE Advanced 2023 Paper 2 Online
Numerical
+4
-0
Consider the following molecules: $\mathrm{Br}_3 \mathrm{O}_8, \mathrm{~F}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{S}_4 \mathrm{O}_6, \mathrm{H}_2 \mathrm{S}_5 \mathrm{O}_6$, and $\mathrm{C}_3 \mathrm{O}_2$. Count the number of atoms existing in their zero oxidation state in each molecule.

Their sum is _______.
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2
JEE Advanced 2020 Paper 2 Offline
Numerical
+3
-1
Consider the following compounds in the liquid form :

O2, HF, H2O, NH3, H2O2, CCl4, CHCl3, C6H6, C6H5Cl

When a charged comb is brought near their flowing stream, how many of them show deflection as per the following figure?

JEE Advanced 2020 Paper 2 Offline Chemistry - Chemical Bonding & Molecular Structure Question 12 English
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3
JEE Advanced 2017 Paper 1 Offline
Numerical
+3
-0
Among $${H_2},H{e_2}^ + ,L{i_2},$$ $$B{e_2},{B_2},{C_2},{N_2},O_2^ - $$ and $${F_2},$$ the number of diamagnetic species is

(Atomic numbers : $$H = 1,He = 2,$$ $$Li = 3,Be = 4,$$ $$B = 5,C = 6,$$ $$N = 7,$$ $$O = 8,F = 9$$)
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4
JEE Advanced 2015 Paper 1 Offline
Numerical
+4
-0
Among the triatomic molecules/ions, BeCl2, $$N_3^-$$, N2O, $$NO_2^+$$, O3, SCl2, $$ICl_2^-$$, $$I_3^-$$ and XeF2, the total number of linear molecule(s)/ion(s) where the hybridization of the central atom does not have contribution from the d-orbital(s) is

[Atomic number: S = 16, Cl = 17, I = 53 and Xe = 54]
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