1
JEE Main 2019 (Online) 10th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct match between item 'I' and item 'II' is :

Item 'I' (compound) Item 'II'
(reagent)
(A) Lysine (P) 1-naphthol
(B) Furfural (Q) ninhydrin
(C) Benzylalcohol (R) KMnO4
(D) Styrene (S) Ceric ammonium
nitrate
A
(A)  $$ \to $$  (Q);  (B)  $$ \to $$  (R);  (C)  $$ \to $$  (S);   (D)  $$ \to $$  (P)
B
(A)  $$ \to $$  (Q);  (B)  $$ \to $$  (P);  (C)  $$ \to $$  (S);   (D)  $$ \to $$  (R)
C
(A)  $$ \to $$  (R);  (B)  $$ \to $$  (P);  (C)  $$ \to $$  (Q);   (D)  $$ \to $$  (S)
D
(A)  $$ \to $$  (Q);  (B)  $$ \to $$  (P);  (C)  $$ \to $$  (R);   (D)  $$ \to $$  (S)
2
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 70 English Option 1
B
JEE Main 2019 (Online) 9th January Evening Slot Chemistry - Practical Organic Chemistry Question 70 English Option 2
C
JEE Main 2019 (Online) 9th January Evening Slot Chemistry - Practical Organic Chemistry Question 70 English Option 3
D
JEE Main 2019 (Online) 9th January Evening Slot Chemistry - Practical Organic Chemistry Question 70 English Option 4
3
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
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 73 English Option 1
B
JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 73 English Option 2
C
JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 73 English Option 3
D
JEE Main 2018 (Online) 16th April Morning Slot Chemistry - Practical Organic Chemistry Question 73 English Option 4
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