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1
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
The two monomers for the synthesis of Nylon 6, 6 are
A
HOOC(CH2)6COOH, H2N(CH2)4NH2
B
HOOC(CH2)4COOH, H2N(CH2)6NH2
C
HOOC(CH2)4COOH, H2N(CH2)4NH2
D
HOOC(CH2)6COOH, H2N(CH2)6NH2
2
JEE Main 2019 (Online) 12th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Poly $$\beta $$ –hydroxybutyrate-co-$$\beta $$-hydroxyvalerate (PHBV) is a copolymer of
A
2-hydroxybutanoic acid and 3-hydroxypentanoic acid
B
3-hydroxybutanoic acid and 2-hydroxypentanoic acid
C
3-hydroxybutanoic acid and 3-hydroxypentanoic acid
D
3-hydroxybutanoic acid and 4-hydroxypentanoic acid
3
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
The homopolymer formed from 4-hydroxy-butanoic acid is :
A
JEE Main 2019 (Online) 11th January Evening Slot Chemistry - Polymers Question 56 English Option 1
B
JEE Main 2019 (Online) 11th January Evening Slot Chemistry - Polymers Question 56 English Option 2
C
JEE Main 2019 (Online) 11th January Evening Slot Chemistry - Polymers Question 56 English Option 3
D
JEE Main 2019 (Online) 11th January Evening Slot Chemistry - Polymers Question 56 English Option 4
4
JEE Main 2019 (Online) 11th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The correct match between items I and II is :

Item-I (Mixture) Item-II (Seperation method)
(A) H2O : Sugar (P) Sublimation
(B) H2O : Aniline (Q) Recrystallization
(C) H2O : Toluene
 (R) Steam distillation
(S) Differential extraction
A
A$$ \to $$(R); (B)$$ \to $$(P); (C)$$ \to $$(S)
B
A$$ \to $$(Q); (B)$$ \to $$(R); (C)$$ \to $$(S)
C
A$$ \to $$(Q); (B)$$ \to $$(P); (C)$$ \to $$(R)
D
A$$ \to $$(S); (B)$$ \to $$(R); (C)$$ \to $$(P)
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