1
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct match between Item I and Item II is :

Item I Item II
(A) Ester test (P) Tyr
(B) Carbylamine test (Q) Asp
(C) Phthalein dye test
(R) Ser
(S) Lys
A
(A)$$ \to $$(Q); (B)$$ \to $$(S); (C)$$ \to $$(P)
B
(A)$$ \to $$(R); (B)$$ \to $$(S); (C)$$ \to $$(Q)
C
(A)$$ \to $$(R); (B)$$ \to $$(Q); (C)$$ \to $$(P)
D
(A)$$ \to $$(Q); (B)$$ \to $$(S); (C)$$ \to $$(R)
2
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
For the equilibrium,
2H2O $$\rightleftharpoons$$ H3O+ + OH$$-$$, the value of $$\Delta $$Go at 298 K is approximately :
A
$$-$$ 80 kJ mol–1
B
100 kJ mol$$-$$1
C
$$-$$ 100 kJ mol$$-$$1
D
80 kJ mol–1
3
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
25 ml of the given HCl solution requires 30 mL of 0.1 M sodium carbonate solution. What is the volume of this HCl solution required to titrate 30 mL of 0.2 M aqueous NaOH solutions ?
A
50 mL
B
12.5 mL
C
25 mL
D
75 mL
4
JEE Main 2019 (Online) 11th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Given the equilibrium constant:

KC of the reaction :

Cu(s) + 2Ag+ (aq) $$ \to $$ Cu2+ (aq) + 2Ag(s) is

10 $$ \times $$ 1015, calculate the E$$_{cell}^0$$ of this reaciton at 298 K

[2.303 $${{RT} \over F}$$ at 298 K = 0.059V]
A
0.4736 mV
B
0.04736 V
C
0.4736 V
D
0.04736 mV
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