1
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In a complexometric titration of metal ion with ligand
M(Metal ion) + L(Ligand) $$ \to $$ C(Complex) end point is estimated spectrophoto - metrically (through light absorption). If 'M' and 'C' do not absorb light and only 'L' absorbs, then the titration plot between absorbed light (A) versus volume of ligand 'L' (V) would look like :
A
JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 55 English Option 1
B
JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 55 English Option 2
C
JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 55 English Option 3
D
JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 55 English Option 4
2
JEE Main 2018 (Offline)
MCQ (Single Correct Answer)
+4
-1
An alkali is titrated against an acid with methyl orange as indicator, which of the following is a correct combination?
A
Base Acid End point
Weak Strong Colourless to pink
B
Base Acid End point
Strong Strong Pinkish red to yellow
C
Base Acid End point
Weak Strong Yellow to pinkish red
D
Base Acid End point
Strong Strong Pink to colourless
3
JEE Main 2018 (Online) 15th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct match between items of List-I and List-II is :

List - I List - II
(A) Coloured impurity (P) Steam distribution
(B) Mixture of o-nitrophenol
and p-nitrophenol
(Q) Fractional distribution
(C) Crude Naphtha (R) Charcoal treatment
(d) Mixture of glycerol
and sugars
(S) Distillation under
reduced pressure
A
(A)-(R), (B)-(S), (C)-(P), (D)-(Q)
B
(A)-(R), (B)-(P), (C)-(S), (D)-(Q)
C
(A)-(R), (B)-(P), (C)-(Q), (D)-(S)
D
(A)-(P), (B)-(S), (C)-(R), (D)-(Q)
4
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A solution containing a group-IV cation gives a precipitate on passing H2S. A solution of this precipitate in dil.HCl produces a white precipitate with NaOH solution and bluish-white precipitate with basic potassium ferrocyanide. The cation is :
A
Co2+
B
Ni2+
C
Mn2+
D
Zn2+
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