1
JEE Main 2023 (Online) 6th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

LIST I
Element detected
LIST II
Reagent used / Product formed
A. Nitrogen I. $$\mathrm{Na_2[Fe(CN)_5NO]}$$
B. Sulphur II. $$\mathrm{AgNO_3}$$
C. Phosphorous III. $$\mathrm{Fe_4[Fe(CN)_6]_3}$$
D. Halogen IV. $$\mathrm{(NH_4)_2MoO_4}$$

Choose the correct answer from the options given below:

A
A-III, B-I, C-IV, D-II
B
A-II, B-I, C-IV, D-III
C
A-IV, B-II, C-I, D-III
D
A-II, B-IV, C-I, D-III
2
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
3
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
$\mathrm{Ni}$
4
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+
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
CBSE
Class 12