1
JEE Main 2021 (Online) 31st August Morning Shift
Numerical
+4
-1
Change Language
The total number of reagents from those given blow, that can convert nitrobenzene into aniline is ___________. (Integer answer)

I. Sn $$-$$ HCl

II. Sn $$-$$ NH4OH

III. Fe $$-$$ HCl

IV. Zn $$-$$ HCl

V. H2 $$-$$ Pd

VI. H2 $$-$$ Raney Nickel
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2
JEE Main 2021 (Online) 31st August Morning Shift
Numerical
+4
-1
Out of Syllabus
Change Language
The number of halogen/(s) forming halic (V) acid is ___________.
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3
JEE Main 2021 (Online) 31st August Morning Shift
Numerical
+4
-1
Change Language
For a first order reaction, the ratio of the time for 75% completion of a reaction to the time for 50% completion is ____________. (Integer answer)
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4
JEE Main 2021 (Online) 31st August Morning Shift
Numerical
+4
-1
Change Language
The number of hydrogen bonded water molecule(s) associated with stoichiometry CuSO4.5H2O is ____________.
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