1
JEE Main 2019 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The tests performed on compound X and their inferences are :

Test Inference
(a) 2, 4 - DNP test Coloured precipitate
(b) Idoform test Yellow precipitate
(c) Azo-dye test No dye formation

Compound 'X' is :
A
JEE Main 2019 (Online) 9th January Evening Slot Chemistry - Practical Organic Chemistry Question 90 English Option 1
B
JEE Main 2019 (Online) 9th January Evening Slot Chemistry - Practical Organic Chemistry Question 90 English Option 2
C
JEE Main 2019 (Online) 9th January Evening Slot Chemistry - Practical Organic Chemistry Question 90 English Option 3
D
JEE Main 2019 (Online) 9th January Evening Slot Chemistry - Practical Organic Chemistry Question 90 English Option 4
2
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
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
3
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
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
4
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 94 English Option 1
B
JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 94 English Option 2
C
JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 94 English Option 3
D
JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 94 English Option 4
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