1
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The incorrect statement is :
A
Cu2+ salts give red coloured borax bead test in reducing flame.
B
Cu2+ and Ni2+ ions give black precipitate with H2S in presence of HCl solution.
C
Ferric ion gives blood red color with potasium thiocyanate.
D
Cu2+ ion gives chocolate coloured preciitate with potassium ferrocyanide solution.
2
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The mass of a non-volatile, non-electrolyte solute (molar mass = 50 g mol-1 ) needed to be dissolved in 114 g octane to reduce its vapour pressure to 75%, is :
A
37.5 g
B
75 g
C
150 g
D
50 g
3
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The incorrect geometry is represented by :
A
BF3 - trigonal planar
B
H2O - bent
C
NF3 - trigonal planar
D
AsF5 - trigonal bipyramidal
4
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In Wilkinson's catalyst, the hybridization of central metal ion and its shape are respectively :
A
sp3d, trigonal bipyramidal
B
sp3, tetrahedral
C
dsp2, square planar
D
d2sp3, octahedral
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