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1
JEE Main 2023 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements :

Statement I : Sulphanilic acid gives esterification test for carboxyl group.

Statement II : Sulphanilic acid gives red colour in Lassigne's test for extra element detection.

In the light of the above statements, choose the most appropriate answer from the options given below :

A
Both Statement I and Statement II are correct
B
Statement I is correct but Statement II is incorrect
C
Both Statement I and Statement II are incorrect
D
Statement I is incorrect but Statement II is correct
2
JEE Main 2023 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
In Dumas method for the estimation of $\mathrm{N}_{2}$, the sample is heated with copper oxide and the gas evolved is passed over :
A
Copper oxide
B
Copper gauze
C
$\mathrm{Pd}$
D
$\mathrm{Ni}$
3
JEE Main 2023 (Online) 30th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

In the wet tests for identification of various cations by precipitation, which transition element cation doesn't belong to group IV in qualitative inorganic analysis?

A
Co2+
B
Ni2+
C
Zn2+
D
Fe3+
4
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Compound that will give positive Lassaigne's test for both nitrogen and halogen is :

A
$$\mathrm{NH_2OH.HCl}$$
B
$$\mathrm{N_2H_4.HCl}$$
C
$$\mathrm{CH_3NH_2.HCl}$$
D
$$\mathrm{NH_4Cl}$$
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