1
JEE Main 2022 (Online) 28th June Morning Shift
Numerical
+4
-1
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The quantity of electricity in Faraday needed to reduce 1 mol of Cr2O$$_7^{2 - }$$ to Cr3+ is ____________.

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2
JEE Main 2022 (Online) 28th June Morning Shift
Numerical
+4
-1
Change Language

For a first order reaction A $$\to$$ B, the rate constant, k = 5.5 $$\times$$ 10$$-$$14 s$$-$$1. The time required for 67% completion of reaction is x $$\times$$ 10$$-$$1 times the half life of reaction. The value of x is _____________ (Nearest integer)

(Given : log 3 = 0.4771)

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3
JEE Main 2022 (Online) 28th June Morning Shift
Numerical
+4
-1
Change Language

Number of complexes which will exhibit synergic bonding amongst, $$[Cr{(CO)_6}]$$, $$[Mn{(CO)_5}]$$ and $$[M{n_2}{(CO)_{10}}]$$ is ___________.

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4
JEE Main 2022 (Online) 28th June Morning Shift
Numerical
+4
-1
Change Language

In the estimation of bromine, 0.5 g of an organic compound gave 0.40 g of silver bromide. The percentage of bromine in the given compound is _________ % (nearest integer)

(Relative atomic masses of Ag and Br are 108u and 80u, respectively).

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