1
JEE Main 2021 (Online) 18th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The charges on the colloidal CdS sol and TiO2 sol are, respectively :
A
positive and positive
B
positive and negative
C
negative and negative
D
negative and positive
2
JEE Main 2021 (Online) 18th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Given below are two statements :

Statement I : C2H5OH and AgCN both can generate nucleophile.

Statement II : KCN and AgCN both will generate nitrile nucleophile with all reaction conditions.

Choose the most appropriate option :
A
Statement I is false but statement II is true.
B
Both statement I and statement II are true.
C
Both statement I and statement II are false.
D
Statement I is true but statement II is false.
3
JEE Main 2021 (Online) 18th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
A hard substance melts at high temperature and is an insulator in both solid and in molten state. This solid is most likely to be a/an :
A
Covalent solid
B
Molecular solid
C
Ionic solid
D
Metallic solid
4
JEE Main 2021 (Online) 18th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The oxide that shows magnetic property is :
A
MgO
B
SiO2
C
Mn3O4
D
Na2O
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