1
JEE Advanced 2020 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2
Change Language
In an experiment, m grams of a compound X (gas/liquid/solid) taken in a container is loaded in a balance as shown in figure I below.

In the presence of a magnetic field, the pan with X is either deflected upwards (figure II), or deflected downwards (figure III), depending on the compound X. Identify the correct statement(s).

JEE Advanced 2020 Paper 2 Offline Chemistry - Coordination Compounds Question 30 English
A
If X is H2O(l), deflection of the pan is upwards
B
If X is K4[Fe(CN)6](s), deflection of the pan is upwards.
C
If X is O2(g), deflection of the pan is downwards.
D
If X is C6H6(l), deflection of the pan is downwards
2
JEE Advanced 2020 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2
Change Language
Choose the correct statement(s) among the following :
A
[FeCl4]$$-$$ has tetrahedral geometry.
B
[Co(en)(NH3)2Cl2]+ has 2 geometrical isomers.
C
[FeCl4]$$-$$ has higher spin-only magnetic moment than [Co(en)(NH3)2Cl2]+.
D
The cobalt ion in [Co(en)(NH3)2Cl2]+ has sp3d2 hybridisation.
3
JEE Advanced 2018 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
Change Language
The correct option(s) regarding the complex

$${\left[ {Co\left( {en} \right){{\left( {N{H_3}} \right)}_3}\left( {{H_2}O} \right)} \right]^{3 + }}\,\,$$ $$\left( {en = {H_2}NC{H_2}C{H_2}N{H_2}} \right)$$ is (are)
A
It has two geometrical isomers
B
It will have three geometrical isomers if bidentate 'en' is replaced by two cyanide ligands
C
It is paramagnetic
D
It absorbs light at longer wavelength as compared to

$${\left[ {Co\left( {en} \right){{\left( {N{H_3}} \right)}_4}} \right]^{3 + }}$$
4
JEE Advanced 2018 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-1
Change Language
The correct statement(s) regarding the binary transition metal carbonyl compounds is(are) (Atomic numbers : $$Fe = 26,Ni = 28$$)
A
Total number of valence shell electrons at metal center in $$Fe{\left( {CO} \right)_5}\,\,$$ or $$Ni{\left( {CO} \right)_4}$$ is $$16$$
B
These are predominantly low spin in nature
C
Metal-carbon bond strengthens when the oxidation state of the metal is lowered.
D
The carbonyl $$C-O$$ bond weakens when the oxidation state of the metal is increased
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