1
JEE Main 2023 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
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-1
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In the following halogenated organic compounds, the one with the maximum number of chlorine atoms in its structure is :
A
Gammaxene
B
Chloropicrin
C
Chloral
D
Freon-12
2
JEE Main 2023 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The incorrect statement for the use of indicators in acid-base titration is :
A
Phenolphthalein is a suitable indicator for a weak acid vs strong base titration.
B
Methyl orange may be used for a weak acid vs weak base titration.
C
Methyl orange is a suitable indicator for a strong acid vs weak base titration.
D
Phenolphthalein may be used for a strong acid vs strong base titration.
3
JEE Main 2023 (Online) 31st January Evening Shift
Numerical
+4
-1
Change Language
Assume carbon burns according to the following equation :

$2 \mathrm{C}_{(\mathrm{s})}+\mathrm{O}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{CO}(\mathrm{g})$

when $12 \mathrm{~g}$ carbon is burnt in $48 \mathrm{~g}$ of oxygen, the volume of carbon monoxide produced is ___________ $\times 10^{-1} \mathrm{~L}$ at STP [nearest integer]

[Given: Assume $\mathrm{CO}$ as ideal gas, Mass of $\mathrm{C}$ is $12 \mathrm{~g} \mathrm{~mol}^{-1}$, Mass of $\mathrm{O}$ is $16 \mathrm{~g} \mathrm{~mol}^{-1}$ and molar volume of an ideal gas at STP is $22.7 \mathrm{~L} \mathrm{~mol}^{-1}$ ]
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4
JEE Main 2023 (Online) 31st January Evening Shift
Numerical
+4
-1
Change Language
The number of molecules which gives the haloform test among the following molecules is ________.

JEE Main 2023 (Online) 31st January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 42 English
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