1
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In chromatography, which of the following statements is incorrect for Rf ?
A
Rf value depends on the type of chromatography.
B
Higher Rf value means higher adsorption.
C
Rf value is dependent on the mobile phase.
D
The value of Rf can not be more than one.
2
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Number of stereo centers present in linear and cyclic structures of glucose are respectively :
A
4 & 4
B
4 & 5
C
5 & 4
D
5 & 5
3
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The highest possible oxidation states of uranium and plutonium, respectively are :
A
4 and 6
B
6 and 4
C
7 and 6
D
6 and 7
4
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The noble gas that does not occur in the atmosphere is :
A
Ne
B
He
C
Kr
D
Ra
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