1
JEE Main 2023 (Online) 31st January Morning Shift
Numerical
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On complete combustion, $$0.492 \mathrm{~g}$$ of an organic compound gave $$0.792 \mathrm{~g}$$ of $$\mathrm{CO}_{2}$$. The % of carbon in the organic compound is ___________ (Nearest integer)

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2
JEE Main 2023 (Online) 31st January Morning Shift
Numerical
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At $$27^{\circ} \mathrm{C}$$, a solution containing $$2.5 \mathrm{~g}$$ of solute in $$250.0 \mathrm{~mL}$$ of solution exerts an osmotic pressure of $$400 \mathrm{~Pa}$$. The molar mass of the solute is ___________ $$\mathrm{g} \mathrm{~mol}^{-1}$$ (Nearest integer)

(Given : $$\mathrm{R}=0.083 \mathrm{~L} \mathrm{~bar} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$$)

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3
JEE Main 2023 (Online) 31st January Morning Shift
Numerical
+4
-1
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The oxidation state of phosphorus in hypophosphoric acid is + _____________.

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4
JEE Main 2023 (Online) 31st January Morning Shift
Numerical
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How many of the transformations given below would result in aromatic amines?

JEE Main 2023 (Online) 31st January Morning Shift Chemistry - Compounds Containing Nitrogen Question 42 English

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