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1
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Electrochemistry Question 153 English
$$E_{C{u^{2 + }}|Cu}^0$$ = +0.34 V

$$E_{Z{n^{2 + }}|Zn}^0$$ = -0.76 V

Identify the incorrect statement from the option below for the above cell :
A
If Eext < 1.1 V, Zn dissolves at anode and Cu deposits at cathode
B
If Eext = 1.1 V, no flow of e or current occurs
C
If Eext > 1.1 V, e flows from Cu to Zn
D
If Eext > 1.1 V, Zn dissolves at Zn electrode and Cu deposits at Cu electrode
2
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
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For the equilibrium A ⇌ B , the variation of the rate of the forward (a) and reverse (b) reaction with time is given by :
A
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Chemical Equilibrium Question 85 English Option 1
B
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Chemical Equilibrium Question 85 English Option 2
C
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Chemical Equilibrium Question 85 English Option 3
D
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Chemical Equilibrium Question 85 English Option 4
3
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
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[P] on treatment with Br2/FeBr3 in CCl4 produced a single isomer C8H7O2Br while heating [P] with sodalime gave toluene. The compound [P] is
A
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 202 English Option 1
B
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 202 English Option 2
C
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 202 English Option 3
D
JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 202 English Option 4
4
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The decreasing order of reactivity of the following organic molecules towards AgNO3 solution is : JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Haloalkanes and Haloarenes Question 129 English
A
(B) > (A) > (C) > (D)
B
(A) > (B) > (C) > (D)
C
(A) > (B) > (D) > (C)
D
(C) > (D) > (A) > (B)

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