1
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which of the following atoms has the highest first ionization energy?
A
Na
B
K
C
Sc
D
Rb
2
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Which one of the following statements about water is FALSE?
A
Water is oxidized to oxygen during photosynthesis
B
Water can act both as an acid and as a base.
C
There is extensive intramolecular hydrogen bonding in the condensed phase.
D
Ice formed by heavy water sinks in normal water
3
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The main oxides formed on combustion of Li, Na and K in excess of air are, respectively :
A
LiO2, Na2O2 and K2O
B
Li2O2, Na2O2 and KO2
C
Li2O, Na2O2 and KO2
D
Li2O, Na2O and KO2
4
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
The distillation technique most suited for separating glycerol from spent-lye in the soap industry is :
A
Simple distillation
B
Fractional distillation
C
Steam distillation
D
Distillation under reduced pressure
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