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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 81 English Option 1
B
JEE Main 2019 (Online) 9th January Evening Slot Chemistry - Practical Organic Chemistry Question 81 English Option 2
C
JEE Main 2019 (Online) 9th January Evening Slot Chemistry - Practical Organic Chemistry Question 81 English Option 3
D
JEE Main 2019 (Online) 9th January Evening Slot Chemistry - Practical Organic Chemistry Question 81 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
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
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