1
JEE Main 2022 (Online) 25th July Morning Shift
Numerical
+4
-1
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The number of sp3 hybridised carbons in an acyclic neutral compound with molecular formula C4H5N is ___________.

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2
JEE Main 2021 (Online) 31st August Morning Shift
Numerical
+4
-1
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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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3
JEE Main 2021 (Online) 27th July Morning Shift
Numerical
+4
-1
In gaseous triethyl amine the "$$-$$C$$-$$N$$-$$C$$-$$" bond angle is _________ degree.
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4
JEE Main 2021 (Online) 20th July Morning Shift
Numerical
+4
-1
The number of nitrogen atoms in a semicarbazone molecule of acetone is ______________.
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