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1
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Which of the following has the shortest C-Cl bond?
A
Cl–CH=CH–CH3
B
Cl–CH=CH–NO2
C
Cl–CH=CH–OCH3
D
Cl–CH=CH2
2
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
The decreasing order of basicity of the following amines is : JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Basics of Organic Chemistry Question 83 English 1 JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Basics of Organic Chemistry Question 83 English 2 JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Basics of Organic Chemistry Question 83 English 3 JEE Main 2020 (Online) 9th January Evening Slot Chemistry - Basics of Organic Chemistry Question 83 English 4
A
(III) > (II) > (I) > (IV)
B
(I) > (III) > (IV) > (II)
C
(III) > (I) > (II) > (IV)
D
(II) > (III) > (IV) > (I)
3
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
The reaction of H3N3B3Cl3 (A) with LiBH4 in tetrahydrofuran gives inorganic benzene (B). Further, the reaction of (A) with (C) leads to H3N3B3(Me)3. Compounds (B) and (C) respectively, are:
A
Borazine and MeBr
B
Diborane and MeMgBr
C
Boron nitride and MeBr
D
Borazine and MeMgBr
4
JEE Main 2020 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The increasing order of basicity for the following intermediates is (from weak to strong)
JEE Main 2020 (Online) 9th January Morning Slot Chemistry - Basics of Organic Chemistry Question 85 English 1 JEE Main 2020 (Online) 9th January Morning Slot Chemistry - Basics of Organic Chemistry Question 85 English 2 JEE Main 2020 (Online) 9th January Morning Slot Chemistry - Basics of Organic Chemistry Question 85 English 3 JEE Main 2020 (Online) 9th January Morning Slot Chemistry - Basics of Organic Chemistry Question 85 English 4 JEE Main 2020 (Online) 9th January Morning Slot Chemistry - Basics of Organic Chemistry Question 85 English 5
A
(iii) < (i) < (ii) < (iv) < (v)
B
(iii) < (iv) < (ii) < (i) < (v)
C
(v) < (i) < (iv) < (ii) < (iii)
D
(v) < (iii) < (ii) < (iv) < (i)
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