1
NEET 2018
MCQ (Single Correct Answer)
+4
-1
When initial concentration of the reactant is doubled, the half-life period of a zero order reaction
A
is halved
B
is doubled
C
is tripled
D
remains unchanged.
2
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Considering Ellingham diagram, which of the following metals can be used to reduce alumina?
A
Fe
B
Zn
C
Mg
D
Cu
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Which of the following statements is not true for halogens?
A
All are oxidizing agents.
B
All form monobasic oxyacids.
C
All but fluorine show positive oxidation states.
D
Chlorine has the highest electron-gain enthalpy.
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Which one of the following ions exhibits d-d transition and paramagnetism as well?
A
CrO42-
B
Cr2O72–
C
MnO4-
D
MnO42-
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