1
JEE Main 2019 (Online) 9th January Morning Slot
+4
-1
The correct match between Item-I and Item-II is :

Item-I (drug) Item-II (test)
A Chloroxylenol P Carbylamine test
B Norethindrone Q Sodium hydrogen carbonet test
C Sulphapyridine R Ferric chloride test
D Penicillin S Bayer's test
A
A $$\to$$ R;  B $$\to$$ P;  C $$\to$$ S;  D $$\to$$ Q
B
A $$\to$$ Q;  B $$\to$$ S;  C $$\to$$ P;  D $$\to$$ R
C
A $$\to$$ R;  B $$\to$$ S;  C $$\to$$ P;  D $$\to$$ Q
D
A $$\to$$ Q;  B $$\to$$ P;  C $$\to$$ S;  D $$\to$$ R
2
JEE Main 2018 (Online) 16th April Morning Slot
+4
-1
For standardizing NaOH solution, which of the following is used as a primary standard ?
A
Ferrous Ammonium Sulfate
B
dil. HCl
C
Oxalic acid
D
Sodium tetraborate
3
JEE Main 2018 (Online) 16th April Morning Slot
+4
-1
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
B
C
D
4
JEE Main 2018 (Offline)
+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
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