The correct order of acid strength of the following carboxylic acids is
A
III > II > I > IV
B
I > II > III > IV
C
II > I > IV > III
D
I > III > II > IV
2
JEE Advanced 2019 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1
The green colour produced in the borax bead test of a chromium (III) salt is due to
A
Cr2O3
B
CrB
C
Cr(BO2)3
D
Cr2(B4O7)3
3
JEE Advanced 2019 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1
Calamine, malachite, magnetic and cryolite, respectively, are
A
ZnCO3, CuCO3, Fe2O3, Na3AlF6
B
ZnSO4, CuCO3, Fe2O3, AlF3
C
ZnSO4, Cu(OH)2, Fe3O4, Na3AlF6
D
ZnCO3, CuCO3.Cu(OH)2, Fe3O4, Na3AlF6
4
JEE Advanced 2019 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1
Molar conductivity ($$\Lambda $$m) of aqueous solution of sodium stearate, which behaves as a strong electrolyte, is recorded at varying concentrations (C) of sodium stearate. Which one of the following plots provides the correct representation of micelle formation in the solution?
(critical micelle concentration (CMC) is marked with an arrow in the figures)
