1
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The method used for the purification of Indium is :
A
zone refining
B
vapour phase refining
C
liquation
D
van Arkel method
2
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Compounds Containing Nitrogen Question 118 English
Correct statement about the given chemical reaction is :
A
JEE Main 2021 (Online) 25th February Evening Shift Chemistry - Compounds Containing Nitrogen Question 118 English Option 1
B
Reaction is possible and compound (B) will be the major product.
C
Reaction is possible and compound (A) will be major product.
D
The reaction will form sulphonated product instead of nitration.
3
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Given below are two statements :

Statement I : The identification of Ni2+ is carried out by dimethyl glyoxime in the presence of NH4OH.

Statement II : The dimethyl glyoxime is a bidentate neutral ligand.

In the light of the above statements, choose the correct answer from the options given below :
A
Statement I is false but Statement II is true.
B
Statement I is true but Statement II is false.
C
Both Statement I and Statement II are false.
D
Both Statement I and Statement II are true.
4
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Which one of the following statements is FALSE for hydrophilic sols?
A
They do not require electrolytes for stability.
B
The sols cannot be easily coagulated.
C
These sols are reversible in nature.
D
Their viscosity is of the order of that of H2O.
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