1
JEE Main 2021 (Online) 1st September Evening Shift
Numerical
+4
-1
Change Language
The spin-only magnetic moment value of $$B_2^ + $$ species is _____________ $$\times$$ 10$$-$$2 BM. (Nearest integer) [Given : $$\sqrt 3 $$ = 1.73]
Your input ____
2
JEE Main 2021 (Online) 1st September Evening Shift
Numerical
+4
-1
Change Language
If the conductivity of mercury at 0$$^\circ$$C is 1.07 $$\times$$ 106 S m$$-$$1 and the resistance of a cell containing mercury is 0.243$$\Omega$$, then the cell constant of the cell is x $$\times$$ 104 m$$-$$1. The value of x is ____________. (Nearest integer)
Your input ____
3
JEE Main 2021 (Online) 1st September Evening Shift
Numerical
+4
-1
Change Language
A peptide synthesized by the reactions of one molecule each of Glycine, Leucine, Aspartic acid and Histidine will have _________ peptide linkages.
Your input ____
4
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Let f : R $$\to$$ R be a continuous function. Then $$\mathop {\lim }\limits_{x \to {\pi \over 4}} {{{\pi \over 4}\int\limits_2^{{{\sec }^2}x} {f(x)\,dx} } \over {{x^2} - {{{\pi ^2}} \over {16}}}}$$ is equal to :
A
f (2)
B
2f (2)
C
2f $$\left( {\sqrt 2 } \right)$$
D
4f (2)
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