1
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
2
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.
3
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-
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :
Column - I Column - II
A. Co3+ (i) $$\sqrt 8 $$ B.M.
B. Cr3+ (ii) $$\sqrt {35} $$ B.M.
C. Fe3+ (iii) $$\sqrt 3 $$ B.M.
D. Ni2+ (iv) $$\sqrt {24} $$ B.M.
(v) $$\sqrt {15} $$ B.M.
A
A B C D
(iv) (v) (ii) (i)
B
A B C D
(i) (ii) (iii) (iv)
C
A B C D
(iv) (i) (ii) (iii)
D
A B C D
(iii) (v) (i) (ii)
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12