1
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct statement among the following is :
A
(SiH3)3N is planar and more basic than (CH3)3N
B
(SiH3)3N is pyramidal and more basic than (CH3)3N
C
(SiH3)3N is pyramidal and less basic than (CH3)3N
D
(SiH3)3N is planar and less basic than (CH3)3N
2
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Given

CO3+ + e $$ \to $$ CO2+ ; Eo = + 1.81 V

Pb4+ + 2e $$ \to $$ Pb2+ ; Eo = + 1.67 V

Ce4+ + e $$ \to $$ Ce3+ ; Eo = + 1.61 V

Bi3+ + 3e $$ \to $$ Bi ; Eo = + 0.20 V

Oxidizing power of the species will increase in the order :
A
Co3+ < Ce4+ < Bi3+ < Pb4+
B
Co3+ < Pb4+ < Ce4+ < Bi3+
C
Ce4+ < Pb4+ < Bi3+ < Co3+
D
Bi3+ < Ce4+ < Pb4+ < Co3+
3
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The metal that gives hydrogen gas upon treatment with both acid as well as base is :
A
mercury
B
zinc
C
iron
D
magnesium
4
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The integral $$\int {{{2{x^3} - 1} \over {{x^4} + x}}} dx$$ is equal to :
(Here C is a constant of integration)
A
$${\log _e}{{\left| {{x^3} + 1} \right|} \over {{x^2}}} + C$$
B
$${1 \over 2}{\log _e}{{\left| {{x^3} + 1} \right|} \over {{x^2}}} + C$$
C
$${\log _e}\left| {{{{x^3} + 1} \over x}} \right| + C$$
D
$${1 \over 2}{\log _e}{{{{\left( {{x^3} + 1} \right)}^2}} \over {\left| {{x^3}} \right|}} + C$$
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